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Schildroth S, Geller RJ, Wesselink AK, Lovett SM, Bethea TN, Claus Henn B, Harmon QE, Taylor KW, Calafat AM, Wegienka G, Gaston SA, Baird DD, Wise LA. Hair product use and urinary biomarker concentrations of non-persistent endocrine disrupting chemicals among reproductive-aged Black women. CHEMOSPHERE 2024; 361:142442. [PMID: 38810806 PMCID: PMC11217908 DOI: 10.1016/j.chemosphere.2024.142442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 04/25/2024] [Accepted: 05/24/2024] [Indexed: 05/31/2024]
Abstract
BACKGROUND Studies have shown an association between hair product use and adverse health outcomes. Scientists have hypothesized that exposure to endocrine-disrupting chemicals (EDCs) drives these associations, but few studies have directly evaluated associations between hair product use and biomarkers of EDCs. Even more limited are studies of Black women, who frequently use EDC-containing products (e.g., hair relaxers). OBJECTIVE We estimated associations between hair product use and EDC biomarker concentrations. METHODS We leveraged cross-sectional data from the Study of Environment, Lifestyle, and Fibroids, a cohort of females aged 23-34 years who self-identified as Black/African American from the Detroit-metropolitan area (USA; n = 425). On structured questionnaires, participants reported their past 24-h and past 12-month use of hair products, including relaxers/straighteners/perms, styling products, moisturizers, oils, and hair food. We quantified urinary concentrations of 19 phthalate/phthalate alternative metabolites, 7 phenols, and 4 parabens using high performance liquid chromatography isotope dilution tandem mass spectrometry. EDC biomarker concentrations were creatinine-adjusted and natural log-transformed. We used multivariable linear regression to estimate mean percent differences in EDC biomarker concentrations and 95% confidence intervals (CIs) associated with hair product use, adjusting for sociodemographic confounders. RESULTS Hair product use was associated with greater concentrations of multiple EDC biomarkers. Notably, use of hair products in the previous 24 h (compared with non-use) was associated with 16.2% (95% CI = 0.7%, 35.9%), 35.0% (95% CI = 2.6%, 77.6%), and 32.3% (95% CI = 8.8%, 92.0%) higher concentrations of mono-isobutyl phthalate, methyl paraben, and ethyl paraben, respectively. Use of hair relaxers/straighteners/perms, styling products, moisturizers, oils, and hair food in the past 12 months was also associated with higher concentrations of multiple phthalate, phenol, and paraben biomarkers. CONCLUSION Hair product use was associated with higher biomarker concentrations of multiple phthalates, phenols, and parabens. These findings suggest that hair products are potentially important exposure sources for hormonally-active chemicals among Black women.
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Affiliation(s)
- Samantha Schildroth
- Department of Epidemiology, Boston University School of Public Health, Boston MA, USA.
| | - Ruth J Geller
- Department of Epidemiology, Boston University School of Public Health, Boston MA, USA
| | - Amelia K Wesselink
- Department of Epidemiology, Boston University School of Public Health, Boston MA, USA
| | - Sharonda M Lovett
- Department of Epidemiology, Boston University School of Public Health, Boston MA, USA
| | - Traci N Bethea
- Office of Minority Health & Health Disparities Research, Georgetown Lombardi Comprehensive Cancer Institute, Washington DC, USA
| | - Birgit Claus Henn
- Department of Environmental Health, Boston University School of Public Health, Boston MA, USA
| | - Quaker E Harmon
- National Institute of Environmental Health Sciences, Durham NC, USA
| | - Kyla W Taylor
- National Toxicology Program, National Institute of Environmental Health Sciences, NC, USA
| | - Antonia M Calafat
- Division of Laboratory Sciences, Centers for Disease Control and Prevention, Atlanta GA, USA
| | | | | | - Donna D Baird
- National Institute of Environmental Health Sciences, Durham NC, USA
| | - Lauren A Wise
- Department of Epidemiology, Boston University School of Public Health, Boston MA, USA
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Carlin DJ, Rider CV. Combined Exposures and Mixtures Research: An Enduring NIEHS Priority. ENVIRONMENTAL HEALTH PERSPECTIVES 2024; 132:75001. [PMID: 38968090 PMCID: PMC11225971 DOI: 10.1289/ehp14340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 04/25/2024] [Accepted: 06/12/2024] [Indexed: 07/07/2024]
Abstract
BACKGROUND The National Institute of Environmental Health Sciences (NIEHS) continues to prioritize research to better understand the health effects resulting from exposure to mixtures of chemical and nonchemical stressors. Mixtures research activities over the last decade were informed by expert input during the development and deliberations of the 2011 NIEHS Workshop "Advancing Research on Mixtures: New Perspectives and Approaches for Predicting Adverse Human Health Effects." NIEHS mixtures research efforts since then have focused on key themes including a) prioritizing mixtures for study, b) translating mixtures data from in vitro and in vivo studies, c) developing cross-disciplinary collaborations, d) informing component-based and whole-mixture assessment approaches, e) developing sufficient similarity methods to compare across complex mixtures, f) using systems-based approaches to evaluate mixtures, and g) focusing on management and integration of mixtures-related data. OBJECTIVES We aimed to describe NIEHS driven research on mixtures and combined exposures over the last decade and present areas for future attention. RESULTS Intramural and extramural mixtures research projects have incorporated a diverse array of chemicals (e.g., polycyclic aromatic hydrocarbons, botanicals, personal care products, wildfire emissions) and nonchemical stressors (e.g., socioeconomic factors, social adversity) and have focused on many diseases (e.g., breast cancer, atherosclerosis, immune disruption). We have made significant progress in certain areas, such as developing statistical methods for evaluating multiple chemical associations in epidemiology and building translational mixtures projects that include both in vitro and in vivo models. DISCUSSION Moving forward, additional work is needed to improve mixtures data integration, elucidate interactions between chemical and nonchemical stressors, and resolve the geospatial and temporal nature of mixture exposures. Continued mixtures research will be critical to informing cumulative impact assessments and addressing complex challenges, such as environmental justice and climate change. https://doi.org/10.1289/EHP14340.
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Affiliation(s)
- Danielle J. Carlin
- Division of Extramural Research and Training, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina, USA
| | - Cynthia V. Rider
- Division of Translational Toxicology, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina, USA
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Chang CJ, O’Brien KM, Kresovich JK, Nwanaji-Enwerem JC, Xu Z, Gaston SA, Jackson CL, Sandler DP, Taylor JA, White AJ. Associations between use of chemical hair products and epigenetic age: Findings from the Sister Study. Environ Epidemiol 2024; 8:e311. [PMID: 38799263 PMCID: PMC11115975 DOI: 10.1097/ee9.0000000000000311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Accepted: 04/16/2024] [Indexed: 05/29/2024] Open
Abstract
Background Hair products may be a source of harmful chemicals and have been linked to age-related health outcomes. We investigated whether the use of hair products is related to epigenetic age in a sample of Black (both Hispanic and non-Hispanic) and non-Hispanic White women. Methods In a subset of 4358 participants aged 35-74 years from the Sister Study, we estimated cross-sectional associations between self-reported use of four chemical hair products (permanent dye, semipermanent dye, straighteners/relaxers, and hair permanents/body waves) in the year before enrollment (2003-2009) and three DNA methylation-based measures of epigenetic age (DunedinPACE, GrimAge age acceleration [GrimAgeAccel], and PhenoAge age acceleration [PhenoAgeAccel]) using survey-weighted multivariable linear regressions. Associations were estimated both overall and by self-identified race and ethnicity, adjusting for chronological age, socioeconomic and lifestyle factors, body mass index, menopausal status, and DNA methylation platform. Results Associations between the use of hair products and the three epigenetic age measures were largely null. Use of hair permanents/body waves was modestly associated with higher DunedinPACE among all participants (βever-never = 0.010; 95% confidence interval [CI] = 0.001, 0.019) and with lower PhenoAgeAccel among Black women (βever-never = -1.53; 95% CI = -2.84, -0.21). Conclusion In this US-based study, we found little evidence of associations between chemical hair product use and epigenetic age in Black and non-Hispanic White women. Observed associations were modest and largely not supported by dose-response relationships or were inconsistent across epigenetic age measures. Previously observed associations between chemical hair product use and aging-related health outcomes may not be explained by the biological aging pathways captured by DunedinPACE, GrimAgeAccel, or PhenoAgeAccel. Alternative biological pathways are worth investigating in racially diverse samples.
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Affiliation(s)
- Che-Jung Chang
- Epidemiology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina
| | - Katie M. O’Brien
- Epidemiology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina
| | - Jacob K. Kresovich
- Departments of Cancer Epidemiology and Breast Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida
| | - Jamaji C. Nwanaji-Enwerem
- Gangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, Georgia
- Department of Emergency Medicine, School of Medicine, Emory University, Atlanta, Georgia
| | - Zongli Xu
- Epidemiology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina
| | - Symielle A. Gaston
- Epidemiology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina
| | - Chandra L. Jackson
- Epidemiology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina
- Intramural Research Program, National Institute on Minority Health and Health Disparities, Bethesda, Maryland
| | - Dale P. Sandler
- Epidemiology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina
| | - Jack A. Taylor
- Epidemiology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina
| | - Alexandra J. White
- Epidemiology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina
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Taylor KW, Co CA, Gaston SA, Jackson CL, Harmon Q, Baird DD. Frequency of personal care product use among reproductive-aged Black individuals and associations with socio-demographic characteristics. JOURNAL OF EXPOSURE SCIENCE & ENVIRONMENTAL EPIDEMIOLOGY 2024:10.1038/s41370-024-00690-x. [PMID: 38811800 DOI: 10.1038/s41370-024-00690-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 05/14/2024] [Accepted: 05/15/2024] [Indexed: 05/31/2024]
Abstract
BACKGROUND Compared to White women, Black women in the United States are more likely to use personal care products (PCPs) with higher concentrations of endocrine-disrupting chemicals (EDCs) and harsher chemical formulations. This may contribute to differential health outcomes in Black women such as increased risk of breast cancer, cardiometabolic outcomes, adverse birth outcomes, and uterine fibroids. OBJECTIVE Classify distinct PCP use patterns across multiple types of products and examine how patterns vary by socio-demographic characteristics. METHODS The Study of Environment, Lifestyle and Fibroids is a cohort study of reproductive-aged Black individuals living around Detroit, Michigan. Using self-reported data on frequency of PCP collected between 2013-2018, we employed latent class analysis to identify distinct groups of participants with similar PCP use. Socio-demographic characteristics were compared across latent classes. RESULTS Among 1562 participants, we identified 6 latent classes: Lower Overall; Higher Nailcare; Higher Skincare; Moderate Overall; Higher Makeup/Haircare/Skincare; Higher Overall. Makeup and nailcare usage were the most predictive for classifying participants into groups. Participants in classes with less frequent use of all PCPs and those with only high use of nailcare products, were more likely to report lower socio-economic status (SES), be current smokers, have a body mass index of ≥35 kg/m2, and have ≥3 births. In comparison, participants in classes with average and more frequent use of PCPs were more likely to report higher SES, be non-smokers, be nulliparous, and have ever used oral contraceptives. IMPACT STATEMENT This study is one of the first detailed assessments of PCP usage among a large cohort of young adult Black women that considers multiple product categories including makeup, hair, skin, nail, and vaginal products. Latent class analysis was used to capture complex patterns of PCP use and identify distinct groups of individuals with similar product use. Although the latent classes are specific to this study population, the identified socio-demographic characteristics or behaviors associated with latent classes may inform targeted and impactful exposure reduction strategies in similar populations.
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Affiliation(s)
- Kyla W Taylor
- Division of Translational Toxicology, National Institute of Environmental Health Sciences, National Institutes of Health, Department of Health and Human Services, Research Triangle Park, NC, USA.
| | - Caroll A Co
- Social and Scientific Systems, Inc., a DLH Holdings Corp Company, Durham, NC, USA
| | - Symielle A Gaston
- Epidemiology Branch, National Institute of Environmental Health Sciences, National Institutes of Health, Department of Health and Human Services, Research Triangle Park, NC, USA
| | - Chandra L Jackson
- Epidemiology Branch, National Institute of Environmental Health Sciences, National Institutes of Health, Department of Health and Human Services, Research Triangle Park, NC, USA
- Division of Intramural Research, National Institute on Minority Health and Health Disparities, National Institutes of Health, Department of Health and Human Services, Bethesda, MD, USA
| | - Quaker Harmon
- Epidemiology Branch, National Institute of Environmental Health Sciences, National Institutes of Health, Department of Health and Human Services, Research Triangle Park, NC, USA
| | - Donna D Baird
- Epidemiology Branch, National Institute of Environmental Health Sciences, National Institutes of Health, Department of Health and Human Services, Research Triangle Park, NC, USA
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Park H, Park YH, Karima G, Kim S, Murali G, Hwang NS, In I, Kim HD. Fabrication of innovative multifunctional dye using MXene nanosheets. NANOSCALE HORIZONS 2024. [PMID: 38808378 DOI: 10.1039/d4nh00187g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2024]
Abstract
The increasing demand for natural and safer alternatives to traditional hair dyes has led to the investigation of nanomaterials as potential candidates for hair coloring applications. MXene nanosheets have emerged as a promising alternative in this context due to their unique optical and electronic properties. In this study, we aimed to evaluate the potential of Ti3C2Tx (Tx = -O, -OH, -F, etc.) MXene nanosheets as a hair dye. MXene nanosheet-based dyes have been demonstrated to exhibit not only coloring capabilities but also additional properties such as antistatic properties, heat dissipation, and electromagnetic wave shielding. Additionally, surface modification of MXene using collagen reduces the surface roughness of hair and upregulates keratinocyte markers KRT5 and KRT14, demonstrating the potential for tuning its physicochemical and biological properties. This conceptual advancement highlights the potential of MXene nanosheets to go beyond simple cosmetic improvements and provide improved comfort and safety by preventing the presence of hazardous ingredients and solvents while providing versatility.
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Affiliation(s)
- Hyeongtaek Park
- Department of IT Convergence (BK21 FOUR), Korea National University of Transportation, Chungju, 27469, Republic of Korea.
| | - Young Ho Park
- Department of IT Convergence (BK21 FOUR), Korea National University of Transportation, Chungju, 27469, Republic of Korea.
- Department of Polymer Science and Engineering, Korea National University of Transportation, Chungju, 27469, Republic of Korea
- Chemical Industry Institute, Korea National University of Transportation, Chungju 27469, South Korea
| | - Gul Karima
- Department of Polymer Science and Engineering, Korea National University of Transportation, Chungju, 27469, Republic of Korea
| | - Sujin Kim
- Department of IT Convergence (BK21 FOUR), Korea National University of Transportation, Chungju, 27469, Republic of Korea.
| | - G Murali
- Department of IT Convergence (BK21 FOUR), Korea National University of Transportation, Chungju, 27469, Republic of Korea.
- Chemical Industry Institute, Korea National University of Transportation, Chungju 27469, South Korea
| | - Nathaniel S Hwang
- School of Chemical and Biological Engineering, Institute of Chemical Process, Seoul National University, Seoul, 08826, Republic of Korea
- BioMax/N-Bio Institute, Seoul National University, Seoul, 08826, Republic of Korea
- Institute of Engineering Research, Seoul National University, Seoul, 08826, Republic of Korea
| | - Insik In
- Department of IT Convergence (BK21 FOUR), Korea National University of Transportation, Chungju, 27469, Republic of Korea.
- Department of Polymer Science and Engineering, Korea National University of Transportation, Chungju, 27469, Republic of Korea
- Chemical Industry Institute, Korea National University of Transportation, Chungju 27469, South Korea
| | - Hwan D Kim
- Department of IT Convergence (BK21 FOUR), Korea National University of Transportation, Chungju, 27469, Republic of Korea.
- Department of Polymer Science and Engineering, Korea National University of Transportation, Chungju, 27469, Republic of Korea
- Department of Biomedical Engineering, Korea National University of Transportation, Chungju, 27469, Republic of Korea
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Mandeville J, Alkhalaf Z, Joannidis C, Ryan M, Nelson D, Quiros-Alcala L, Gribble MO, Pollack AZ. Risk perception and use of personal care products by race and ethnicity among a diverse population. UCL OPEN. ENVIRONMENT 2024; 6:e3038. [PMID: 38757092 PMCID: PMC11098005 DOI: 10.14324/111.444/ucloe.3038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Accepted: 03/26/2024] [Indexed: 05/18/2024]
Abstract
Personal care products can contain phthalates, parabens and other endocrine-disrupting chemicals. However, information on perception of risks from personal care product use and how use varies by race and ethnicity is limited. We evaluated differences in personal care product use and risk perception in a diverse sample of participants recruited from a US college campus and online. A self-administered questionnaire captured information on sociodemographic factors, personal care product use trends and perception of risk associated with them. Pearson's chi-square and Fisher's exact tests were used to determine differences in personal care product use and risk perception by race and ethnicity. Ordered logistic regressions were performed to measure associations between personal care product use frequency across racial/ethnic categories. Participant (n = 770) mean age was 22.8 years [standard deviation ± 6.0]. Daily use of make-up (eye = 29.3%; other = 38.0%; all = 33.7%) and skincare products (55%) was most frequently reported among Middle Eastern and North African participants. Non-Hispanic Black participants reported the highest daily use of hairstyling products (52%) and lotion (78%). Daily make-up use was more frequently reported among females (41%) than males (24.6%). Levels of agreement were similar across racial and ethnic groups, that personal care product manufacturers should be required to list all ingredients (≥87%). There were significant associations between the frequency of use of some personal care products and racial/ethnic categories when the use frequencies of participants from other racial/ethnic categories were compared to the use frequency of non-Hispanic White participants. There were significant differences in daily use frequency, levels of trust, perception of safety and health risks associated with personal care products by race and ethnicity, underscoring that there may be different sources of exposure to chemicals in personal care products by race and ethnicity.
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Affiliation(s)
- Julia Mandeville
- Department of Global and Community Health, College of Public Health, George Mason University, Fairfax, VA, USA
| | - Zeina Alkhalaf
- Department of Global and Community Health, College of Public Health, George Mason University, Fairfax, VA, USA
| | - Charlotte Joannidis
- Department of Global and Community Health, College of Public Health, George Mason University, Fairfax, VA, USA
| | - Michelle Ryan
- Department of Global and Community Health, College of Public Health, George Mason University, Fairfax, VA, USA
| | - Devon Nelson
- Department of Global and Community Health, College of Public Health, George Mason University, Fairfax, VA, USA
| | - Lesliam Quiros-Alcala
- Department of Environmental Health and Engineering, Johns Hopkins University, Baltimore, MD, USA
| | - Matthew O. Gribble
- Division of Occupational, Environmental & Climate Medicine, University of California, San Francisco, CA, USA
| | - Anna Z. Pollack
- Department of Global and Community Health, College of Public Health, George Mason University, Fairfax, VA, USA
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Levasseur JL, Hoffman K, Zhang S, Cooper EM, Stapleton HM. Monitoring human exposure to four parabens and triclosan: comparing silicone wristbands with spot urine samples as predictors of internal dose. JOURNAL OF EXPOSURE SCIENCE & ENVIRONMENTAL EPIDEMIOLOGY 2024:10.1038/s41370-024-00663-0. [PMID: 38704446 DOI: 10.1038/s41370-024-00663-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 03/07/2024] [Accepted: 03/11/2024] [Indexed: 05/06/2024]
Abstract
BACKGROUND People are exposed to a variety of chemicals each day as a result of their personal care product (PCP) use. OBJECTIVE This study was designed to determine if silicone wristbands provide a quantitative estimate of internal dose for phenols commonly associated with PCPs, with a focus on triclosan and four parabens: methyl-, ethyl-, propyl-, and butylparaben. Uptake of these compounds into wristbands and correlations with internal dose were assessed. METHODS Ten adults from central North Carolina wore five silicone wristbands, with one wristband removed each day for 5 days. Each participant provided a 24 h urine sample and a random spot urine sample each day, in which paraben and triclosan metabolites were evaluated. RESULTS All parabens and triclosan were detected frequently in wristbands and, except for butylparaben, in urine samples. Wristband and spot urine concentrations of parabens and triclosan were both compared to a measurement of internal dose (i.e., the total metabolite mass excreted over 5 days as a measurement of internal dose). IMPACT STATEMENT The two most hydrophobic compounds investigated, butylparaben and triclosan, displayed significant linear uptake in wristbands over 5 days, whereas concentrations of methyl- and ethylparaben displayed a steady state concentration. In general, wristbands and spot urine samples were similarly correlated to internal dose for frequently detected parabens and triclosan. However, wristbands have additional advantages including higher detection rates and reduced participant burden that may make them more suitable tools for assessing exposure to PCPs.
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Affiliation(s)
| | - Kate Hoffman
- Nicholas School of Environment, Duke University, Durham, NC, USA
| | - Sharon Zhang
- Nicholas School of Environment, Duke University, Durham, NC, USA
| | - Ellen M Cooper
- Nicholas School of Environment, Duke University, Durham, NC, USA
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Farooq H, Mhatre P, Aggarwal R, Robinson MT, Joseph E, Segars J, Singh B. A systematic review of association between use of hair products and benign and malignant gynecological conditions. Eur J Obstet Gynecol Reprod Biol 2024; 295:160-171. [PMID: 38364603 DOI: 10.1016/j.ejogrb.2024.02.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 01/14/2024] [Accepted: 02/07/2024] [Indexed: 02/18/2024]
Abstract
Hair products often contain chemicals like para-phenylenediamine (PPD) and endocrine-disrupting chemicals (EDCs); giving rise to concerns about the possible adverse effects such as hormonal disturbances and carcinogenicity. The objective of this systematic review was to evaluate the association between the use of different hair products and benign and malignant gynecological conditions. Studies were identified from three databases including PubMed, Embase, and Scopus, and evaluated in accordance with PRISMA guidelines. The risk of bias was assessed using the Newcastle-Ottawa Scale. A total of 17 English-language studies met the inclusion criteria. Associations of hair relaxer or hair dye use with breast and ovarian cancer were observed in at least one well-designed study, but these findings were not consistent across studies. Further sub-analysis showed 1.08 times (95 % CI: 1.01-1.15) increased risk of breast cancer in females with permanent hair dye use. Chang et al. reported strong association between uterine cancer risk and hair relaxer use (HR 1.8, 95 % CI: 1.12-2.88), with no observed association with hair dye use. Studies conducted by Wise et al. and James-Todd et al. for benign gynecological conditions; including uterine leiomyoma (IRR 1.17, 95 % CI: 1.06-1.30), early onset of menarche (RR 1.4, 95 % CI: 1.1-1.9), and decreased fecundability (FR 0.89, 95 % CI: 0.81-0.98) revealed positive associations with hair relaxer use, but these findings were based on small sample sizes. In summary, the available evidence regarding personal use of hair products and gynecological conditions is insufficient to determine whether a positive association exists.
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Affiliation(s)
- Hajra Farooq
- Aga Khan University Medical College, Karachi, Pakistan
| | - Pauras Mhatre
- Seth G.S. Medical College and K.E.M. Hospital, Mumbai, India
| | - Riya Aggarwal
- Dayanand Medical College and Hospital, Ludhiana, Punjab, India
| | - Mahalia T Robinson
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Emily Joseph
- Informationist Services, Welch Medical Library, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - James Segars
- Division of Reproductive Sciences & Women's Health Research, Department of Gynecology & Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Bhuchitra Singh
- Division of Reproductive Sciences & Women's Health Research, Department of Gynecology & Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
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9
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Pleasant V. Gynecologic Care of Black Breast Cancer Survivors. CURRENT BREAST CANCER REPORTS 2024; 16:84-97. [PMID: 38725438 PMCID: PMC11081127 DOI: 10.1007/s12609-024-00527-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/15/2024] [Indexed: 05/12/2024]
Abstract
Purpose of Review Black patients suffer from breast cancer-related racial health disparities, which could have implications on their gynecologic care. This review explores considerations in the gynecologic care of Black breast cancer survivors. Recent Findings Black people have a higher risk of leiomyoma and endometrial cancer, which could confound bleeding patterns such as in the setting of tamoxifen use. As Black people are more likely to have early-onset breast cancer, this may have implications on long-term bone and heart health. Black patients may be more likely to have menopausal symptoms at baseline and as a result of breast cancer treatment. Furthermore, Black patients are less likely to utilize assisted reproductive technology and genetic testing services. Summary It is important for healthcare providers to be well-versed in the intersections of breast cancer and gynecologic care. Black breast cancer survivors may have unique considerations for which practitioners should be knowledgeable.
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Affiliation(s)
- Versha Pleasant
- University of Michigan Hospital, Mott Children & Women’s Hospital, 1500 East Medical Center Drive, Ann Arbor, MI 48109, USA
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Pleasant V. A Public Health Emergency: Breast Cancer Among Black Communities in the United States. Obstet Gynecol Clin North Am 2024; 51:69-103. [PMID: 38267132 DOI: 10.1016/j.ogc.2023.11.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2024]
Abstract
While Black people have a similar incidence of breast cancer compared to White people, they have a 40% increased death rate. Black people are more likely to be diagnosed with aggressive subtypes such as triple-negative breast cancer. However, despite biological factors, systemic racism and social determinants of health create delays in care and barriers to treatment. While genetic testing holds incredible promise for Black people, uptake remains low and results may be challenging to interpret. There is a need for more robust, multidisciplinary, and antiracist interventions to reverse breast cancer-related racial disparities.
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Affiliation(s)
- Versha Pleasant
- Department of Obstetrics and Gynecology, Cancer Genetics & Breast Health Clinic, University of Michigan, 1500 East Medical Center Drive, Ann Arbor, MI 48109, USA.
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Nieh C, Mabila SL. Incidence and health care burden of uterine fibroids among female service members in the active component of the U.S. Armed Forces, 2011-2022. MSMR 2024; 31:9-15. [PMID: 38466970 PMCID: PMC10959453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 03/13/2024]
Abstract
Uterine fibroids are the most common benign tumors of the uterus among women of reproductive age, disproportionally affecting non-Hispanic Black women compared to other races and ethnicities. This report is an update of a 2011 MSMR report that examined uterine fibroids among female active component service members in the U.S. Armed Forces from 2001 to 2010. Incident uterine fibroids were identified for this report from inpatient and outpatient medical encounter data from 2011 to 2022. Health care burden was estimated utilizing uterine fibroid-related inpatient and outpatient diagnostic and procedure codes. Crude incidence rates and incidence rate ratios were calculated to compare rate differences between subpopulations. A total of 16,046 new uterine fibroid cases were identified, with an incidence rate of 63.5 cases per 10,000 person-years (95% confidence interval: 62.5-64.5). The highest incidence rates were observed among service women 40 years and older, non-Hispanic Black women, and those who served in the Army. Health care burden analysis showed that, even with increases in medical encounters and individuals affected, the numbers of hospital bed days declined over time. The decline in uterine fibroid-related hospital bed days could be attributed to early diagnoses and minimally-invasive treatments. Continued promotion of uterine fibroid awareness can potentially help further reduce uterine fibroid-related impacts on military readiness.
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Affiliation(s)
- Chiping Nieh
- Epidemiology and Analysis Section, Armed Forces Health Surveillance Division, Defense Health Agency, Silver Spring, MD
| | - Sithembile L Mabila
- Epidemiology and Analysis Section, Armed Forces Health Surveillance Division, Defense Health Agency, Silver Spring, MD
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Smarr MM, Avakian M, Lopez AR, Onyango B, Amolegbe S, Boyles A, Fenton SE, Harmon QE, Jirles B, Lasko D, Moody R, Schelp J, Sutherland V, Thomas L, Williams CJ, Dixon D. Broadening the Environmental Lens to Include Social and Structural Determinants of Women's Health Disparities. ENVIRONMENTAL HEALTH PERSPECTIVES 2024; 132:15002. [PMID: 38227347 PMCID: PMC10790815 DOI: 10.1289/ehp12996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 12/06/2023] [Accepted: 12/14/2023] [Indexed: 01/17/2024]
Abstract
BACKGROUND Due to the physical, metabolic, and hormonal changes before, during, and after pregnancy, women-defined here as people assigned female at birth-are particularly susceptible to environmental insults. Racism, a driving force of social determinants of health, exacerbates this susceptibility by affecting exposure to both chemical and nonchemical stressors to create women's health disparities. OBJECTIVES To better understand and address social and structural determinants of women's health disparities, the National Institute of Environmental Health Sciences (NIEHS) hosted a workshop focused on the environmental impacts on women's health disparities and reproductive health in April 2022. This commentary summarizes foundational research and unique insights shared by workshop participants, who emphasized the need to broaden the definition of the environment to include upstream social and structural determinants of health. We also summarize current challenges and recommendations, as discussed by workshop participants, to address women's environmental and reproductive health disparities. DISCUSSION The challenges related to women's health equity, as identified by workshop attendees, included developing research approaches to better capture the social and structural environment in both human and animal studies, integrating environmental health principles into clinical care, and implementing more inclusive publishing and funding approaches. Workshop participants discussed recommendations in each of these areas that encourage interdisciplinary collaboration among researchers, clinicians, funders, publishers, and community members. https://doi.org/10.1289/EHP12996.
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Affiliation(s)
- Melissa M. Smarr
- Division of Extramural Research and Training, National Institute of Environmental Health Sciences, Durham, North Carolina, USA
| | | | | | | | - Sara Amolegbe
- Office of the Director, National Institutes of Health, Bethesda, Maryland, USA
| | - Abee Boyles
- Division of Extramural Research and Training, National Institute of Environmental Health Sciences, Durham, North Carolina, USA
| | - Suzanne E. Fenton
- Division of Translational Toxicology, National Institute of Environmental Health Sciences, Durham, North Carolina, USA
| | - Quaker E. Harmon
- Division of Intramural Research, National Institute of Environmental Health Sciences, Durham, North Carolina, USA
| | - Bill Jirles
- Office of the Director, National Institute of Environmental Health Sciences, Durham, North Carolina, USA
| | - Denise Lasko
- Division of Translational Toxicology, National Institute of Environmental Health Sciences, Durham, North Carolina, USA
| | - Rosemary Moody
- Division of Extramural Research, National Institute on Drug Abuse, Bethesda, Maryland, USA
| | - John Schelp
- Office of the Director, National Institute of Environmental Health Sciences, Durham, North Carolina, USA
| | - Vicki Sutherland
- Division of Translational Toxicology, National Institute of Environmental Health Sciences, Durham, North Carolina, USA
| | - Laura Thomas
- Division of Translational Research, National Institute of Mental Health, Bethesda, Maryland, USA
| | - Carmen J. Williams
- Division of Intramural Research, National Institute of Environmental Health Sciences, Durham, North Carolina, USA
| | - Darlene Dixon
- Division of Translational Toxicology, National Institute of Environmental Health Sciences, Durham, North Carolina, USA
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13
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Darko N, Millet N, Usman A, Teece L, Moss EL. Exploring the perspectives of underrepresented voices: Perceptions and experiences of uterine cancer for black African, Caribbean, black British, and mixed-black women in the UK to develop strategies for early symptom presentation. Gynecol Oncol 2024; 180:132-138. [PMID: 38091772 DOI: 10.1016/j.ygyno.2023.11.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 11/23/2023] [Accepted: 11/26/2023] [Indexed: 02/18/2024]
Abstract
OBJECTIVES The uterine cancer (UC) mortality rate in the UK is significantly higher for women who belong to a Black ethnic group compared to those from other ethnic groups. This study aimed to understand the views and experiences of UC amongst Black ethnic minority women in the UK, with a focus on awareness and presentation of red-flag symptoms. METHODS Women of Black African, Caribbean, Black British and Mixed-Black ethnicity were purposefully recruited to participate in focus groups and individual semi-structured interviews. RESULTS Twenty women from different regions in England participated in the study. Reflexive thematic analysis of the data led to the identification of three main themes: 1) Healthcare inequities; 2) Support and sense making with other Black women; and 3) Knowledge dissemination, mobilisation, and empowerment. Perceptions of inequitable healthcare provision and distrust influenced how participants, and their peer networks, approached seeking assistance from healthcare professionals. Concerns were also raised about culturally insensitive information resources, including issues of language, literacy, and representation, all of which served as potential barriers for women within Black ethnic minority groups. CONCLUSIONS The deficiency of targeted knowledge mobilisation and specific UC information aimed at Black ethnicity women living in the UK, reportedly contributes to the dissemination of misconceptions and an atmosphere of apprehension around a UC diagnosis. The insights from this study highlight the significance of designing culturally sensitive strategies to promote informed decision-making and empower the dissemination of accurate health knowledge amongst Black women.
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Affiliation(s)
- N Darko
- College of Life Sciences, University of Leicester, University Road, Leicester, LE1 7RH, UK.
| | - N Millet
- College of Life Sciences, University of Leicester, University Road, Leicester, LE1 7RH, UK
| | - A Usman
- College of Life Sciences, University of Leicester, University Road, Leicester, LE1 7RH, UK
| | - L Teece
- College of Life Sciences, University of Leicester, University Road, Leicester, LE1 7RH, UK
| | - E L Moss
- College of Life Sciences, University of Leicester, University Road, Leicester, LE1 7RH, UK; University Hospitals of Leicester NHS Trust, Infirmary Square, Leicester, LE1 5WW, UK
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14
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Bertrand KA, Delp L, Coogan PF, Cozier YC, Lenzy YM, Rosenberg L, Palmer JR. Hair relaxer use and risk of uterine cancer in the Black Women's Health Study. ENVIRONMENTAL RESEARCH 2023; 239:117228. [PMID: 37821068 PMCID: PMC10842360 DOI: 10.1016/j.envres.2023.117228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Revised: 09/11/2023] [Accepted: 09/13/2023] [Indexed: 10/13/2023]
Abstract
BACKGROUND Chemical hair relaxers, use of which is highly prevalent among Black women in the US, have been inconsistently linked to risk of estrogen-dependent cancers, such as breast cancer, and other reproductive health conditions. Whether hair relaxer use increases risk of uterine cancer is unknown. METHODS In the Black Women's Health Study, 44,798 women with an intact uterus who self-identified as Black were followed from 1997, when chemical hair relaxer use was queried, until 2019. Over follow-up, 347 incident uterine cancers were diagnosed. We used multivariable Cox proportional hazards regression models, adjusted for age and other potential confounders, to estimate hazard ratios (HRs) and 95% confidence intervals (CIs) for associations of hair relaxer use with risk of uterine cancer. RESULTS Compared to women who never used hair relaxers or used them infrequently (<4 years and ≤1-2 times/year), the HR for uterine cancer associated with heavy use (≥15 years and at least 5 times/year) was 1.18 (95% CI: 0.81, 1.71). However, among postmenopausal women, compared to never/light use, the HR for moderate use was 1.60 (95% CI: 1.01, 2.53), the HR for heavy use was 1.64 (1.01, 2.64), and the HR for ≥20 years of use regardless of frequency was 1.71 (1.08, 2.72). Results among premenopausal women were null. CONCLUSIONS In this large cohort of Black women, long-term use of chemical hair relaxers was associated with increased risk of uterine cancer among postmenopausal women, but not among premenopausal women. These findings suggest that hair relaxer use may be a potentially modifiable risk factor for uterine cancer.
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Affiliation(s)
- Kimberly A Bertrand
- Slone Epidemiology Center at Boston University, Boston, MA, USA; Department of Medicine, Boston University Chobanian & Avedisian School of Medicine, Boston, MA, USA.
| | - Lauren Delp
- Slone Epidemiology Center at Boston University, Boston, MA, USA
| | | | - Yvette C Cozier
- Slone Epidemiology Center at Boston University, Boston, MA, USA; Department of Epidemiology, Boston University School of Public Health, Boston, MA, USA
| | - Yolanda M Lenzy
- Lenzy Dermatology and Hair Loss Center, Chicopee, MA, USA; University of Connecticut Health Dermatology, Farmington, CT, USA
| | - Lynn Rosenberg
- Slone Epidemiology Center at Boston University, Boston, MA, USA
| | - Julie R Palmer
- Slone Epidemiology Center at Boston University, Boston, MA, USA; Department of Medicine, Boston University Chobanian & Avedisian School of Medicine, Boston, MA, USA
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15
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Ginsburg O, Vanderpuye V, Beddoe AM, Bhoo-Pathy N, Bray F, Caduff C, Florez N, Fadhil I, Hammad N, Heidari S, Kataria I, Kumar S, Liebermann E, Moodley J, Mutebi M, Mukherji D, Nugent R, So WKW, Soto-Perez-de-Celis E, Unger-Saldaña K, Allman G, Bhimani J, Bourlon MT, Eala MAB, Hovmand PS, Kong YC, Menon S, Taylor CD, Soerjomataram I. Women, power, and cancer: a Lancet Commission. Lancet 2023; 402:2113-2166. [PMID: 37774725 DOI: 10.1016/s0140-6736(23)01701-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 06/27/2023] [Accepted: 08/11/2023] [Indexed: 10/01/2023]
Affiliation(s)
- Ophira Ginsburg
- Centre for Global Health, US National Cancer Institute, Rockville, MD, USA.
| | | | | | | | - Freddie Bray
- International Agency for Research on Cancer, Lyon, France
| | - Carlo Caduff
- Department of Global Health and Social Medicine, King's College London, London, UK
| | - Narjust Florez
- Dana-Farber Cancer Institute, Boston, MA, USA; Harvard Medical School, Boston, MA, USA
| | | | - Nazik Hammad
- Department of Medicine, Division of Hematology-Oncology, St. Michael's Hospital, University of Toronto, Canada; Department of Oncology, Queens University, Kingston, Canada
| | - Shirin Heidari
- GENDRO, Geneva, Switzerland; Gender Centre, Geneva Graduate Institute, Geneva, Switzerland
| | - Ishu Kataria
- Center for Global Noncommunicable Diseases, RTI International, New Delhi, India
| | - Somesh Kumar
- Jhpiego India, Johns Hopkins University Affiliate, Baltimore, MD, USA
| | - Erica Liebermann
- University of Rhode Island College of Nursing, Providence, RI, USA
| | - Jennifer Moodley
- Cancer Research Initiative, Faculty of Health Sciences, School of Public Health and Family Medicine, and SAMRC Gynaecology Cancer Research Centre, University of Cape Town, Cape Town, South Africa
| | - Miriam Mutebi
- Department of Surgery, Aga Khan University, Nairobi, Kenya
| | - Deborah Mukherji
- Faculty of Medicine, American University of Beirut, Beirut, Lebanon; Clemenceau Medical Center Dubai, Dubai, United Arab Emirates
| | - Rachel Nugent
- Center for Global Noncommunicable Diseases, RTI International, Durham, NC, USA; Department of Global Health, University of Washington, Seattle, WA, USA
| | - Winnie K W So
- The Nethersole School of Nursing, Faculty of Medicine, The Chinese University of Hong Kong, New Territories, Hong Kong Special Administrative Region, China
| | - Enrique Soto-Perez-de-Celis
- Department of Geriatrics, National Institute of Medical Science and Nutrition Salvador Zubiran, Mexico City, Mexico
| | | | - Gavin Allman
- Center for Global Noncommunicable Diseases, RTI International, Durham, NC, USA
| | - Jenna Bhimani
- Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - María T Bourlon
- Department of Hemato-Oncology, National Institute of Medical Science and Nutrition Salvador Zubiran, Mexico City, Mexico
| | - Michelle A B Eala
- College of Medicine, University of the Philippines, Manila, Philippines; Department of Radiation Oncology, University of California Los Angeles, Los Angeles, CA, USA
| | | | - Yek-Ching Kong
- Faculty of Medicine, Universiti Malaya, Kuala Lumpur, Malaysia
| | - Sonia Menon
- Cochrane Hepato-Biliary Group, Copenhagen Trial Unit, Centre for Clinical Intervention Research, The Capital Region, Copenhagen University Hospital-Rigshospitalet, Copenhagen, Denmark
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Payne CE, Rockson A, Ashrafi A, McDonald JA, Bethea TN, Barrett ES, Llanos AAM. Beauty Beware: Associations between Perceptions of Harm and Safer Hair-Product-Purchasing Behaviors in a Cross-Sectional Study of Adults Affiliated with a University in the Northeast. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:7129. [PMID: 38063560 PMCID: PMC10706836 DOI: 10.3390/ijerph20237129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 11/21/2023] [Accepted: 11/28/2023] [Indexed: 12/18/2023]
Abstract
(1) Background: Widespread personal care product (PCP) use can expose individuals to endocrine-disrupting chemicals (EDCs) associated with adverse health outcomes. This study investigated the association between harm perceptions and hair-product-purchasing behaviors in adults enrolled in a cross-sectional study. (2) Methods: Respondents rated their agreement with five PCP-related harm statements using a five-point Likert scale. Multivariable-adjusted logistic regression models were used to examine the associations between harm perceptions with hair-product-purchasing behaviors and hair product use (i.e., number of products used). (3) Results: Among 567 respondents (non-Hispanic White, 54.9%; non-Hispanic Black, 9.5%; Hispanic/Latinx, 10.1%; Asian American/Pacific Islander, 20.1%; and multiracial/other, 5.5%), stronger harm perceptions around PCP use were associated with potentially "safer" hair-product-purchasing behaviors. Respondents who strongly agreed that consumers should be concerned about the health effects of PCPs had more than fourfold increased odds of always/usually using healthy product apps (OR 4.10, 95% CI: 2.04-8.26); reading ingredient labels (OR 4.53, 95% CI: 2.99-6.87); and looking for natural, non-toxic, or eco-friendly product labels (OR 4.53, 95% CI: 2.99-6.88) when buying hair products. (4) Conclusions: Promoting environmental health literacy and raising awareness of potential PCP use-related harms might encourage healthier hair product use behaviors.
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Affiliation(s)
- Cathryn E. Payne
- Department of Epidemiology, Mailman School of Public Health, Columbia University Irving Medical Center, New York, NY 10032, USA; (C.E.P.); (A.R.)
| | - Amber Rockson
- Department of Epidemiology, Mailman School of Public Health, Columbia University Irving Medical Center, New York, NY 10032, USA; (C.E.P.); (A.R.)
| | - Adiba Ashrafi
- Department of Epidemiology, Mailman School of Public Health, Columbia University Irving Medical Center, New York, NY 10032, USA; (C.E.P.); (A.R.)
| | - Jasmine A. McDonald
- Department of Epidemiology, Mailman School of Public Health, Columbia University Irving Medical Center, New York, NY 10032, USA; (C.E.P.); (A.R.)
- Herbert Irving Comprehensive Cancer Center, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Traci N. Bethea
- Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC 20057, USA;
| | - Emily S. Barrett
- Department of Biostatistics & Epidemiology, Rutgers School of Public Health, Piscataway, NJ 08854, USA;
- Environmental and Occupational Health Sciences Institute, Rutgers University, Piscataway, NJ 08854, USA
| | - Adana A. M. Llanos
- Department of Epidemiology, Mailman School of Public Health, Columbia University Irving Medical Center, New York, NY 10032, USA; (C.E.P.); (A.R.)
- Herbert Irving Comprehensive Cancer Center, Columbia University Irving Medical Center, New York, NY 10032, USA
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Matamá T, Costa C, Fernandes B, Araújo R, Cruz CF, Tortosa F, Sheeba CJ, Becker JD, Gomes A, Cavaco-Paulo A. Changing human hair fibre colour and shape from the follicle. J Adv Res 2023:S2090-1232(23)00350-8. [PMID: 37967812 DOI: 10.1016/j.jare.2023.11.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 09/21/2023] [Accepted: 11/12/2023] [Indexed: 11/17/2023] Open
Abstract
INTRODUCTION Natural hair curvature and colour are genetically determined human traits, that we intentionally change by applying thermal and chemical treatments to the fibre. Presently, those cosmetic methodologies act externally and their recurrent use is quite detrimental to hair fibre quality and even to our health. OBJECTIVES This work represents a disruptive concept to modify natural hair colour and curvature. We aim to model the fibre phenotype as it is actively produced in the follicle through the topical delivery of specific bioactive molecules to the scalp. METHODS Transcriptome differences between curly and straight hairs were identified by microarray. In scalp samples, the most variable transcripts were mapped by in situ hybridization. Then, by using appropriate cellular models, we screened a chemical library of 1200 generic drugs, searching for molecules that could lead to changes in either fibre colour or curvature. A pilot-scale, single-centre, investigator-initiated, prospective, blind, bilateral (split-scalp) placebo-controlled clinical study with the intervention of cosmetics was conducted to obtain a proof of concept (RNEC n.92938). RESULTS We found 85 genes transcribed significantly different between curly and straight hair, not previously associated with this human trait. Next, we mapped some of the most variable genes to the inner root sheath of follicles, reinforcing the role of this cell layer in fibre shape moulding. From the drug library screening, we selected 3 and 4 hits as modulators of melanin synthesis and gene transcription, respectively, to be further tested in 33 volunteers. The intentional specific hair change occurred: 8 of 14 volunteers exhibited colour changes, and 16 of 19 volunteers presented curvature modifications, by the end of the study. CONCLUSION The promising results obtained are the first step towards future cosmetics, complementary or alternative to current methodologies, taking hair styling to a new level: changing hair from the inside out.
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Affiliation(s)
- Teresa Matamá
- CEB - Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal; LABBELS - Associate Laboratory, 4710-057 Braga, Portugal.
| | - Cristiana Costa
- CEB - Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal
| | - Bruno Fernandes
- CEB - Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal
| | - Rita Araújo
- CBMA - Centre of Molecular and Environmental Biology, University of Minho, Campus of Gualtar, 4710-057, Braga, Portugal; CIBIO - Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO - Laboratório Associado, Campus de Vairão, Universidade do Porto, 4485-661 Vairão, Portugal
| | - Célia F Cruz
- CEB - Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal
| | - Francisco Tortosa
- Serviço de Anatomia Patológica, CHLN - Hospital de Santa Maria / Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal; Unidade de Anatomia Patológica, Hospital CUF Descobertas, Rua Mário Botas (Parque das Nações), 1998-018, Lisboa, Portugal
| | - Caroline J Sheeba
- ICVS - Life and Health Sciences Research Institute, University of Minho, 4710-057 Braga, Portugal; NIHR Central Commissioning Facility (CCF), Grange House, 15 Church Street, Twickenham, TW1 3NL, UK
| | - Jörg D Becker
- Instituto Gulbenkian de Ciência, Rua da Quinta Grande 6, Oeiras, 2780-156, Portugal; Instituto de Tecnologia Química e Biológica, Universidade Nova de Lisboa, Av. da República, Oeiras, 2780-157, Portugal
| | - Andreia Gomes
- CBMA - Centre of Molecular and Environmental Biology, University of Minho, Campus of Gualtar, 4710-057, Braga, Portugal
| | - Artur Cavaco-Paulo
- CEB - Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal; LABBELS - Associate Laboratory, 4710-057 Braga, Portugal; Solfarcos - Pharmaceutical and Cosmetic Solutions Ltd, Avenida Imaculada Conceição n. 589, 4700-034 Braga, Portugal.
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18
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Llanos AAM, Rockson A, Getz K, Greenberg P, Portillo E, McDonald JA, Teteh DK, Villasenor J, Lozada C, Franklin J, More V, Rivera-Núñez Z, Kinkade CW, Barrett ES. Assessment of personal care product use and perceptions of use in a sample of US adults affiliated with a university in the Northeast. ENVIRONMENTAL RESEARCH 2023; 236:116719. [PMID: 37481059 PMCID: PMC10592243 DOI: 10.1016/j.envres.2023.116719] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 07/17/2023] [Accepted: 07/20/2023] [Indexed: 07/24/2023]
Abstract
Evidence supports unequal burdens of chemical exposures from personal care products (PCPs) among some groups, namely femme-identifying and racial and ethnic minorities. In this study, we implemented an online questionnaire to assess PCP purchasing and usage behaviors and perceptions of use among a sample of US adults recruited at a Northeastern university. We collected PCP use across seven product categories (hair, beauty, skincare, perfumes/colognes, feminine hygiene, oral care, other), and behaviors, attitudes, and perceptions of use and safety across sociodemographic factors to evaluate relationships between sociodemographic factors and the total number of products used within the prior 24-48 h using multivariable models. We also summarized participants' perceptions and attitudes. Among 591 adults (20.0% Asian American/Pacific Islander [AAPI], 5.9% Hispanic, 9.6% non-Hispanic Black [NHB], 54.6% non-Hispanic White [NHW], and 9.9% multiracial or other), the average number of PCPs used within the prior 24-48 h was 15.6 ± 7.7. PCP use was greater among females than males (19.0 vs. 7.9, P < 0.01) and varied by race and ethnicity among females. Relative to NHWs, AAPI females used fewer hair products (2.5 vs. 3.1) and more feminine hygiene products (1.5 vs. 1.1), NHB females used more hair products (3.8 vs. 3.1), perfumes (1.0 vs. 0.6), oral care (2.3 vs. 1.9), and feminine hygiene products (1.8 vs. 1.1), and multiracial or other females used more oral care (2.2 vs. 1.9) and feminine hygiene products (1.5 vs. 1.1) (P-values <0.05). Generally, study participants reported moderate concern about exposures and health effects from using PCPs, with few differences by gender, race, and ethnicity. These findings add to the extant literature on PCP use across sociodemographic characteristics. Improving the understanding of patterns of use for specific products and their chemical ingredients is critical for developing interventions to reduce these exposures, especially in vulnerable groups with an unequal burden of exposure.
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Affiliation(s)
- Adana A M Llanos
- Department of Epidemiology, Mailman School of Public Health, Columbia University Irving Medical Center, New York, NY, USA; Herbert Irving Comprehensive Cancer Center, Columbia University Irving Medical Center, New York, NY, USA.
| | - Amber Rockson
- Department of Epidemiology, Mailman School of Public Health, Columbia University Irving Medical Center, New York, NY, USA
| | - Kylie Getz
- Department of Biostatistics & Epidemiology, Rutgers School of Public Health, Piscataway, NJ, USA
| | - Patricia Greenberg
- Department of Biostatistics & Epidemiology, Rutgers School of Public Health, Piscataway, NJ, USA
| | - Eva Portillo
- Biostatistics Epidemiology Summer Training (BEST) Diversity Program, Mailman School of Public Health, Columbia University Irving Medical Center, New York, NY, USA
| | - Jasmine A McDonald
- Department of Epidemiology, Mailman School of Public Health, Columbia University Irving Medical Center, New York, NY, USA; Herbert Irving Comprehensive Cancer Center, Columbia University Irving Medical Center, New York, NY, USA
| | - Dede K Teteh
- Department of Health Sciences, Crean College of Health and Behavioral Sciences, Chapman University, Orange, CA, USA
| | - Justin Villasenor
- Biostatistics Epidemiology Summer Training (BEST) Diversity Program, Mailman School of Public Health, Columbia University Irving Medical Center, New York, NY, USA
| | - Carolina Lozada
- Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, USA
| | - Jamirra Franklin
- Environmental and Health Sciences Department, Spelman College, Atlanta, GA, USA
| | - Vaishnavi More
- Department of Nursing and Health Sciences, The College of New Jersey, Ewing, NJ, USA
| | - Zorimar Rivera-Núñez
- Department of Biostatistics & Epidemiology, Rutgers School of Public Health, Piscataway, NJ, USA; Environmental and Occupational Health Sciences Institute, Rutgers University, Piscataway, NJ, USA
| | - Carolyn W Kinkade
- Environmental and Occupational Health Sciences Institute, Rutgers University, Piscataway, NJ, USA
| | - Emily S Barrett
- Department of Biostatistics & Epidemiology, Rutgers School of Public Health, Piscataway, NJ, USA; Environmental and Occupational Health Sciences Institute, Rutgers University, Piscataway, NJ, USA
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19
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Okeke CAV, Burgess CM. Dispelling myths of chemical hair relaxers causing uterine cancer. J Am Acad Dermatol 2023; 89:875-876. [PMID: 37364612 DOI: 10.1016/j.jaad.2023.06.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 06/12/2023] [Accepted: 06/16/2023] [Indexed: 06/28/2023]
Affiliation(s)
- Chidubem A V Okeke
- Department of Dermatology, Howard University College of Medicine, Washington, District of Columbia
| | - Cheryl M Burgess
- Center for Dermatology and Dermatologic Surgery, Washington, District of Columbia.
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Medina HN, Penedo FJ, Joachim C, Deloumeaux J, Koru-Sengul T, Macni J, Bhakkan B, Peruvien J, Schlumbrecht MP, Pinheiro PS. Endometrial cancer risk and trends among distinct African descent populations. Cancer 2023; 129:2717-2726. [PMID: 37357566 DOI: 10.1002/cncr.34789] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 02/23/2023] [Accepted: 03/08/2023] [Indexed: 06/27/2023]
Abstract
BACKGROUND Endometrial cancer (EC) is the fourth most common cancer among Black women in the United States, a population disproportionately affected by aggressive nonendometrioid subtypes (e.g., serous, carcinosarcoma). To examine EC vulnerability among a wider spectrum of African descent populations, a comparison between Black women residing in different countries, rather than in the United States alone, is needed. METHODS The authors analyzed 34,789 EC cases from Florida (FL) (2005-2018), Martinique (2005-2018), and Guadeloupe (2008-2018) based on cancer registry data. Age-adjusted incidence rates, incidence rate ratios (IRRs), and annual percent changes (APC) in trends were estimated for Black populations residing in the United States (non-Hispanic Blacks [NHB]) and Caribbean. The US non-Hispanic White (NHW) population was used as a reference. RESULTS Caribbean Black women had the lowest rates for endometrioid and nonendometrioid subtypes. Nonendometrioid types were most common among US (FL) NHBs (9.2 per 100,000), 2.6 times greater than NHWs (IRR, 2.60; 95% confidence interval [CI], 2.44-2.76). For endometrioid EC, rates increased 1.8% (95% CI, 0.1-3.5) yearly from 2005 to 2018 for US (FL) NHBs and 1.2% (95% CI, 0.9-1.6) for US (FL) NHWs whereas no change was observed for Caribbean Blacks. For nonendometroid carcinomas, rates increased 5.6% (95% CI, 4.0-7.2) among US (FL) NHB, 4.4% (95% CI, 0.3-8.6) for Caribbean Black, and 3.9% for US (FL) NHW women (95% CI, 2.4-5.5). CONCLUSIONS Lower rates of nonendometrioid EC among Caribbean Black women suggest that vulnerability for these aggressive tumor subtypes may not currently be an overarching African ancestry disparity. Most importantly, there is an alarmingly increasing trend in nonendometrioid across all populations studied, which warrants further surveillance and etiological research for this particular subtype. PLAIN LANGUAGE SUMMARY We analyze population-based incidence rates and trends of endometrial cancer (EC) for African descent populations residing in different countries (i.e., United States, Martinique, Guadeloupe) to examine whether EC vulnerability among Black women is socio-environmental or more ancestry-specific in nature. The increased EC risk was not uniform across all Black women since the Caribbean had the lowest rates (for endometrioid and nonendometrioid histology subtypes). Regardless, from 2005 to 2018, there was an increasing trajectory of nonendometrioid EC for all groups, regardless of race.
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Affiliation(s)
- Heidy N Medina
- Department of Public Health Sciences, University of Miami School of Medicine, Miami, Florida, USA
| | - Frank J Penedo
- Sylvester Comprehensive Cancer Center, University of Miami School of Medicine, Miami, Florida, USA
- Department of Psychology, University of Miami, Miami, Florida, USA
| | - Clarisse Joachim
- Martinique Cancer Registry, University Hospital of Martinique, Martinique, France
| | | | - Tulay Koru-Sengul
- Department of Public Health Sciences, University of Miami School of Medicine, Miami, Florida, USA
- Sylvester Comprehensive Cancer Center, University of Miami School of Medicine, Miami, Florida, USA
| | - Jonathan Macni
- Martinique Cancer Registry, University Hospital of Martinique, Martinique, France
| | - Bernard Bhakkan
- Guadeloupe Cancer Registry, University Hospital of Guadeloupe, Guadeloupe, France
| | - Jessica Peruvien
- Guadeloupe Cancer Registry, University Hospital of Guadeloupe, Guadeloupe, France
| | - Matthew P Schlumbrecht
- Sylvester Comprehensive Cancer Center, University of Miami School of Medicine, Miami, Florida, USA
- Department of Obstetrics & Gynecology, University of Miami School of Medicine, Miami, Florida, USA
| | - Paulo S Pinheiro
- Department of Public Health Sciences, University of Miami School of Medicine, Miami, Florida, USA
- Sylvester Comprehensive Cancer Center, University of Miami School of Medicine, Miami, Florida, USA
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21
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Dyer O. US Supreme Court pauses $6bn Sackler family opioid settlement for review. BMJ 2023; 382:1871. [PMID: 37580080 DOI: 10.1136/bmj.p1871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 08/16/2023]
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22
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Nkimbeng M, Malaika Rumala BB, Richardson CM, Stewart-Isaacs SE, Taylor JL. The Person Beneath the Hair: Hair Discrimination, Health, and Well-Being. Health Equity 2023; 7:406-410. [PMID: 37638116 PMCID: PMC10457631 DOI: 10.1089/heq.2022.0118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/21/2023] [Indexed: 08/29/2023] Open
Abstract
Discrimination toward black hair is pervasive in today's society. Hair discrimination is negative bias manifested toward black natural or textured hair styles typically worn by persons of African descent. This commentary discusses the potential effects of hair discrimination on the health and well-being of persons of African descent. Specifically, it explores the mental and physical health implications of hair discrimination and situates it within the broader context of social determinants of health. The Creating a Respectful and Open World for Natural Hair Act has been recently passed in the United States House of Representatives, but more work is needed to eliminate hair discrimination and its negative effects.
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Affiliation(s)
- Manka Nkimbeng
- School of Public Health, University of Minnesota, Minneapolis, Minnesota, USA
- CROWNCampaign.com, California, USA
| | | | - Crystal M. Richardson
- CROWNCampaign.com, California, USA
- The Law Office of Crystal M. Richardson PLLC, High Point, North Carolina, USA
| | - Shemekka Ebony Stewart-Isaacs
- CROWNCampaign.com, California, USA
- People with Lived Experience Institute, California, USA
- I Am Brilliant, Raleigh, North Carolina, USA
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23
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Wise LA, Wang TR, Ncube CN, Lovett SM, Abrams J, Boynton-Jarrett R, Koenig MR, Geller RJ, Wesselink AK, Coleman CM, Hatch EE, James-Todd T. Use of Chemical Hair Straighteners and Fecundability in a North American Preconception Cohort. Am J Epidemiol 2023; 192:1066-1080. [PMID: 37005071 PMCID: PMC10505421 DOI: 10.1093/aje/kwad079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 03/28/2023] [Accepted: 03/31/2023] [Indexed: 04/04/2023] Open
Abstract
Chemical hair straighteners ("relaxers") are used by millions of North Americans, particularly women of color. Hair relaxers may contain endocrine-disrupting compounds, which can harm fertility. We evaluated the association between hair relaxer use and fecundability among 11,274 participants from Pregnancy Study Online (PRESTO), a North American preconception cohort study. During 2014-2022, participants completed a baseline questionnaire in which they reported their history of relaxer use and completed follow-up questionnaires every 8 weeks for 12 months or until pregnancy, whichever came first. We used multivariable-adjusted proportional probabilities regression models to estimate fecundability ratios (FRs) and 95% confidence intervals (CIs). Relative to never use, fecundability was lower among current (FR = 0.81, 95% CI: 0.64, 1.03) and former (FR = 0.89, 95% CI: 0.81, 0.98) users of hair relaxers. FRs for first use of hair relaxers at ages <10, 10-19, and ≥20 years were 0.73 (95% CI: 0.55, 0.96), 0.93 (95% CI: 0.83, 1.04), and 0.85 (95% CI: 0.74, 0.98), respectively. Fecundability was lowest among those with longer durations of use (≥10 years vs. never: FR = 0.71, 95% CI: 0.54, 0.91) and more frequent use (≥5 times/year vs. never: FR = 0.82, 95% CI: 0.60, 1.11), but associations were nonmonotonic. In this preconception cohort study, use of chemical hair straighteners was associated with slightly reduced fecundability.
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Affiliation(s)
- Lauren A Wise
- Correspondence to Dr. Lauren A. Wise, Department of Epidemiology, Boston University School of Public Health, 715 Albany Street, Boston, MA, 02118 (e-mail: )
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24
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Fernandes B, Cavaco-Paulo A, Matamá T. A Comprehensive Review of Mammalian Pigmentation: Paving the Way for Innovative Hair Colour-Changing Cosmetics. BIOLOGY 2023; 12:biology12020290. [PMID: 36829566 PMCID: PMC9953601 DOI: 10.3390/biology12020290] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 01/26/2023] [Accepted: 02/09/2023] [Indexed: 02/15/2023]
Abstract
The natural colour of hair shafts is formed at the bulb of hair follicles, and it is coupled to the hair growth cycle. Three critical processes must happen for efficient pigmentation: (1) melanosome biogenesis in neural crest-derived melanocytes, (2) the biochemical synthesis of melanins (melanogenesis) inside melanosomes, and (3) the transfer of melanin granules to surrounding pre-cortical keratinocytes for their incorporation into nascent hair fibres. All these steps are under complex genetic control. The array of natural hair colour shades are ascribed to polymorphisms in several pigmentary genes. A myriad of factors acting via autocrine, paracrine, and endocrine mechanisms also contributes for hair colour diversity. Given the enormous social and cosmetic importance attributed to hair colour, hair dyeing is today a common practice. Nonetheless, the adverse effects of the long-term usage of such cosmetic procedures demand the development of new methods for colour change. In this context, case reports of hair lightening, darkening and repigmentation as a side-effect of the therapeutic usage of many drugs substantiate the possibility to tune hair colour by interfering with the biology of follicular pigmentary units. By scrutinizing mammalian pigmentation, this review pinpoints key targetable processes for the development of innovative cosmetics that can safely change the hair colour from the inside out.
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Affiliation(s)
- Bruno Fernandes
- CEB—Centre of Biological Engineering, University of Minho, Campus of Gualtar, 4710-057 Braga, Portugal
| | - Artur Cavaco-Paulo
- CEB—Centre of Biological Engineering, University of Minho, Campus of Gualtar, 4710-057 Braga, Portugal
- LABBELS—Associate Laboratory, 4710-057 Braga, Portugal
- Correspondence: (A.C.-P.); (T.M.); Tel.: +351-253-604-409 (A.C.-P.); +351-253-601-599 (T.M.)
| | - Teresa Matamá
- CEB—Centre of Biological Engineering, University of Minho, Campus of Gualtar, 4710-057 Braga, Portugal
- LABBELS—Associate Laboratory, 4710-057 Braga, Portugal
- Correspondence: (A.C.-P.); (T.M.); Tel.: +351-253-604-409 (A.C.-P.); +351-253-601-599 (T.M.)
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25
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Etminan M. RE: Use of straighteners and other hair products and incident uterine cancer. J Natl Cancer Inst 2023; 115:228. [PMID: 36534896 PMCID: PMC9905965 DOI: 10.1093/jnci/djac234] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 12/14/2022] [Indexed: 12/23/2022] Open
Affiliation(s)
- Mahyar Etminan
- Department of Ophthalmology and Visual Sciences and Medicine, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
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26
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Bucher ML, Anderson FL, Lai Y, Dicent J, Miller GW, Zota AR. Exposomics as a tool to investigate differences in health and disease by sex and gender. EXPOSOME 2023; 3:osad003. [PMID: 37122372 PMCID: PMC10125831 DOI: 10.1093/exposome/osad003] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 03/07/2023] [Accepted: 03/10/2023] [Indexed: 05/02/2023]
Abstract
The health and disease of an individual is mediated by their genetics, a lifetime of environmental exposures, and interactions between the two. Genetic or biological sex, including chromosome composition and hormone expression, may influence both the types and frequency of environmental exposures an individual experiences, as well as the biological responses an individual has to those exposures. Gender identity, which can be associated with social behaviors such as expressions of self, may also mediate the types and frequency of exposures an individual experiences. Recent advances in exposome-level analysis have progressed our understanding of how environmental factors affect health outcomes; however, the relationship between environmental exposures and sex- and gender-specific health remains underexplored. The comprehensive, non-targeted, and unbiased nature of exposomic research provides a unique opportunity to systematically evaluate how environmental exposures interact with biological sex and gender identity to influence health. In this forward-looking narrative review, we provide examples of how biological sex and gender identity influence environmental exposures, discuss how environmental factors may interact with biological processes, and highlight how an intersectional approach to exposomics can provide critical insights for sex- and gender-specific health sciences.
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Affiliation(s)
| | - Faith L Anderson
- Department of Environmental Health Sciences, Mailman School of Public Health at Columbia University, New York, NY, USA
| | - Yunjia Lai
- Department of Environmental Health Sciences, Mailman School of Public Health at Columbia University, New York, NY, USA
| | - Jocelyn Dicent
- Department of Environmental Health Sciences, Mailman School of Public Health at Columbia University, New York, NY, USA
| | - Gary W Miller
- Department of Environmental Health Sciences, Mailman School of Public Health at Columbia University, New York, NY, USA
| | - Ami R Zota
- Department of Environmental Health Sciences, Mailman School of Public Health at Columbia University, New York, NY, USA
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