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He Y, Tao Q, Zhou F, Si Y, Fu R, Xu B, Xu J, Li X, Chen B. The relationship between dairy products intake and breast cancer incidence: a meta-analysis of observational studies. BMC Cancer 2021; 21:1109. [PMID: 34654387 PMCID: PMC8520314 DOI: 10.1186/s12885-021-08854-w] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Accepted: 10/08/2021] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND The effect of dairy products intake on breast cancer (BC) is highly controversial. This study aims to investigate the relationship between dairy intake and BC incidence. METHODS A search was carried out in PubMed, EBSCO, Web of Science, and Cochrane Library databases before January 2021. The primary objective was the risk of BC and intake of dairy products were exposure variables. RESULTS The meta-analysis comprised 36 articles with 1,019,232 participants. Total dairy products have a protective effect on female population (hazard ratio (HR) =0.95, 95% confidence interval (CI) =0.91-0.99, p = 0.019), especially for estrogen receptor-positive (ER+) (HR = 0.79, p = 0.002) and progesterone receptor-positive (PR+) BC (HR = 0.75, p = 0.027). For ER+/PR+ BC, there is a trend of protection, but it has not reached statistical significance (HR = 0.92, p = 0.075). Fermented dairy products can reduce BC risk in postmenopausal population (HR = 0.96, 95%CI = 0.93-0.99, p = 0.021), but have no protective effect on premenopausal population (HR = 0.98, 95%CI = 0.94-1.03, p = 0.52). Non-fermented dairy products have no significant effect on BC occurrence (p > 0.05). High-fat dairy products are harmful to women, without statistical difference (HR = 1.06, 95%CI = 1.00-1.13, p = 0.066). On the contrary, low-fat dairy products can protect the premenopausal population (HR = 0.94, 95%CI = 0.89-1.00, p = 0.048). CONCLUSION The intake of dairy products can overall reduce BC risk in the female population, but different dairy products have varying effects on different BC subtypes and menopausal status.
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Affiliation(s)
- Yujing He
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Zhejiang, Hangzhou, China
| | - Qinghua Tao
- Emergency Medical Center, Ningbo Yinzhou No. 2 Hospital, Ningbo, Zhejiang, China
| | - Feifei Zhou
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Zhejiang, Hangzhou, China
| | - Yuexiu Si
- School of Basic Medical Sciences, Zhejiang Chinese Medical University, Zhejiang, Hangzhou, China
| | - Rongrong Fu
- The First Clinical Medical College, Zhejiang Chinese Medical University, Zhejiang, Hangzhou, China
| | - Binbin Xu
- Department of Nutrition, HwaMei Hospital, University of Chinese Academy of Sciences, Ningbo, Zhejiang, China
| | - Jiaxuan Xu
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Zhejiang, Hangzhou, China
| | - Xiangyuan Li
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Zhejiang, Hangzhou, China
| | - Bangsheng Chen
- Emergency Medical Center, Ningbo Yinzhou No. 2 Hospital, Ningbo, Zhejiang, China.
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Dor C, Stark AH, Dichtiar R, Keinan-Boker L, Shimony T, Sinai T. Milk and dairy consumption is positively associated with height in adolescents: results from the Israeli National Youth Health and Nutrition Survey. Eur J Nutr 2021; 61:429-438. [PMID: 34406484 DOI: 10.1007/s00394-021-02661-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2021] [Accepted: 08/10/2021] [Indexed: 01/17/2023]
Abstract
PURPOSE Milk consumption is associated with increased height primarily in early childhood. However, in adolescents, data are scarce with inconsistent results. Since height is a proxy for overall health and well-being, this study evaluated the association of dairy intake with height in adolescents. METHODS Students in 7th-12th grades, participating in the 2015-2016 Israeli Health and Nutrition Youth Survey, a school-based cross-sectional study, completed self-administered questionnaires, including a semi-quantitative food frequency questionnaire (n = 3529, 48% males, 15.2 ± 1.6 years). Anthropometric measurements were also performed. Dairy servings were calculated as the calcium equivalent of 1 cup of milk, and consumption was divided into four categories from very low (< 1 serving/day) to high (3 + servings/day). BMI- and Height-for-age z scores (HAZs) were calculated according to WHO growth standard; relatively short stature (RSS) was defined as HAZ < - 0.7 SD (< 25th percentile). Multivariable linear and logistic regression analyses were performed to evaluate the association of dairy intake with HAZ and prevalence of RSS, respectively. RESULTS Median consumption of dairy products was 2 servings/day, 1.4 from unsweetened products (milk, cheese and yogurt). Controlling for age, sex, BMI-z-score and socioeconomic status, each increment of unsweetened dairy intake was associated with on average 0.04 higher HAZ (equivalent to 0.3-0.4 cm, p < 0.05), and with reduced risk for RSS: OR 0.90, 95%CI: 0.84, 0.97, p < 0.01. No such associations were found with sweetened dairy products. CONCLUSION Consumption of unsweetened dairy products (3-4 servings/day) appears to contribute to achieving growth potential in adolescents. Intervention studies are necessary to determine the causal relationship between dairy intake and linear growth.
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Affiliation(s)
- Chen Dor
- School of Nutritional Sciences, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, 7610001, Rehovot, Israel
| | - Aliza Hannah Stark
- School of Nutritional Sciences, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, 7610001, Rehovot, Israel
| | - Rita Dichtiar
- Israel Center for Disease Control, Israel Ministry of Health, 5262100, Ramat Gan, Israel
| | - Lital Keinan-Boker
- Israel Center for Disease Control, Israel Ministry of Health, 5262100, Ramat Gan, Israel
- School of Public Health, University of Haifa, 3498838, Haifa, Israel
| | - Tal Shimony
- Israel Center for Disease Control, Israel Ministry of Health, 5262100, Ramat Gan, Israel
| | - Tali Sinai
- School of Nutritional Sciences, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, 7610001, Rehovot, Israel.
- Israel Center for Disease Control, Israel Ministry of Health, 5262100, Ramat Gan, Israel.
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Nakanishi A, Homma E, Osaki T, Sho R, Souri M, Sato H, Watanabe M, Ishizawa K, Ueno Y, Kayama T, Konta T. Association between milk and yogurt intake and mortality: a community-based cohort study (Yamagata study). BMC Nutr 2021; 7:33. [PMID: 34256873 PMCID: PMC8278744 DOI: 10.1186/s40795-021-00435-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Accepted: 04/30/2021] [Indexed: 11/10/2022] Open
Abstract
Background Dairy products are known as health-promoting foods. This study prospectively examined the association between milk and yogurt intake and mortality in a community-based population. Methods The study population comprised of 14,264 subjects aged 40–74 years who participated in an annual health checkup. The frequency of yogurt and milk intake was categorized as none (< 1/month), low (< 1/week), moderate (1–6/week), and high (> 1/day) intake. The association between yogurt and milk intake and total, cardiovascular, and cancer-related mortalities was determined using the Cox proportional hazards model. Results During the follow-up period, there were 265 total deaths, 40 cardiovascular deaths and 90 cancer-related deaths. Kaplan–Meier analysis showed that the total mortality in high/moderate/low yogurt intake and moderate/low milk intake groups was lower than that in none group (log-rank, P < 0.01). In the multivariate Cox proportional hazard analysis adjusted for possible confounders, the hazard ratio (HR) for total mortality significantly decreased in high/moderate yogurt intake group (HR: 0.62, 95% confidence interval [CI]: 0.42–0.91 for high intake, HR: 0.70, 95%CI: 0.49–0.99 for moderate intake) and moderate milk intake group (HR: 0.67, 95% CI: 0.46–0.97) compared with the none yogurt and milk intake groups. A similar association was observed for cancer-related mortality, but not for cardiovascular mortality. Conclusions Our study showed that yogurt and milk intake was independently associated with a decrease in total and cancer-related mortalities in the Japanese population. Supplementary Information The online version contains supplementary material available at 10.1186/s40795-021-00435-1.
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Affiliation(s)
- Akiko Nakanishi
- Department of Public Health and Hygiene, Yamagata University Graduate School of Medical Science, 2-2-2 Iida-Nishi, Yamagata, 990-9585, Japan
| | - Erika Homma
- Department of Public Health and Hygiene, Yamagata University Graduate School of Medical Science, 2-2-2 Iida-Nishi, Yamagata, 990-9585, Japan
| | - Tsukasa Osaki
- Department of Public Health and Hygiene, Yamagata University Graduate School of Medical Science, 2-2-2 Iida-Nishi, Yamagata, 990-9585, Japan
| | - Ri Sho
- Department of Public Health and Hygiene, Yamagata University Graduate School of Medical Science, 2-2-2 Iida-Nishi, Yamagata, 990-9585, Japan
| | - Masayoshi Souri
- Department of Public Health and Hygiene, Yamagata University Graduate School of Medical Science, 2-2-2 Iida-Nishi, Yamagata, 990-9585, Japan
| | - Hidenori Sato
- Global Center of Excellence Program Study Group, Yamagata University Faculty of Medicine, Yamagata, Japan
| | - Masafumi Watanabe
- Global Center of Excellence Program Study Group, Yamagata University Faculty of Medicine, Yamagata, Japan
| | - Kenichi Ishizawa
- Global Center of Excellence Program Study Group, Yamagata University Faculty of Medicine, Yamagata, Japan
| | - Yoshiyuki Ueno
- Global Center of Excellence Program Study Group, Yamagata University Faculty of Medicine, Yamagata, Japan
| | - Takamasa Kayama
- Global Center of Excellence Program Study Group, Yamagata University Faculty of Medicine, Yamagata, Japan
| | - Tsuneo Konta
- Department of Public Health and Hygiene, Yamagata University Graduate School of Medical Science, 2-2-2 Iida-Nishi, Yamagata, 990-9585, Japan. .,Global Center of Excellence Program Study Group, Yamagata University Faculty of Medicine, Yamagata, Japan.
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Long-term consumption of non-fermented and fermented dairy products and risk of breast cancer by estrogen receptor status – Population-based prospective cohort study. Clin Nutr 2021; 40:1966-1973. [DOI: 10.1016/j.clnu.2020.09.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 09/10/2020] [Accepted: 09/11/2020] [Indexed: 11/23/2022]
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Dougkas A, Barr S, Reddy S, Summerbell CD. A critical review of the role of milk and other dairy products in the development of obesity in children and adolescents. Nutr Res Rev 2019; 32:106-127. [PMID: 30477600 PMCID: PMC6536827 DOI: 10.1017/s0954422418000227] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Existing reviews suggest that milk and other dairy products do not play a role in the development of obesity in childhood, but they do make an important contribution to children's nutrient intake. It is thus curious that public health advice on the consumption of dairy products for children is often perceived as unclear. The present review aimed to provide an overview of the totality of the evidence on the association between milk and other dairy products, and obesity and indicators of adiposity, in children. Our search identified forty-three cross-sectional studies, thirty-one longitudinal cohort studies and twenty randomised controlled trials. We found that milk and other dairy products are consistently found to be not associated, or inversely associated, with obesity and indicators of adiposity in children. Adjustment for energy intake tended to change inverse associations to neutral. Also, we found little evidence to suggest that the relationship varied by type of milk or dairy product, or age of the children, although there was a dearth of evidence for young children. Only nine of the ninety-four studies found a positive association between milk and other dairy products and body fatness. There may be some plausible mechanisms underlying the effect of milk and other dairy products on adiposity that influence energy and fat balance, possibly through fat absorption, appetite or metabolic activity of gut microbiota. In conclusion, there is little evidence to support a concern to limit the consumption of milk and other dairy products for children on the grounds that they may promote obesity.
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Affiliation(s)
- Anestis Dougkas
- Institut Paul Bocuse Research Centre, Institut Paul Bocuse, Château du Vivier, BP 25, 69131 Ecully Cedex, France
| | - Suzanne Barr
- Department of Medicine, Imperial College London, London, UK
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Wiley AS. The Evolution of Lactase Persistence: Milk Consumption, Insulin-Like Growth Factor I, and Human Life-History Parameters. QUARTERLY REVIEW OF BIOLOGY 2018. [DOI: 10.1086/700768] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Maliou D, Belmadi D, Saadi W, Mahfouf H, Benzidane N, Bitam A. Effect of dairy products intake on breast cancer risk: A case-control study in Algeria. NUTR CLIN METAB 2018. [DOI: 10.1016/j.nupar.2018.04.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Meyer Z, Höflich C, Wirthgen E, Olm S, Hammon HM, Hoeflich A. Analysis of the IGF-system in milk from farm animals - Occurrence, regulation, and biomarker potential. Growth Horm IGF Res 2017; 35:1-7. [PMID: 28544872 DOI: 10.1016/j.ghir.2017.05.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Revised: 05/04/2017] [Accepted: 05/09/2017] [Indexed: 12/18/2022]
Abstract
IGFs and IGF-binding proteins (IGFBPs) are abundantly present in milk and in dairy products. Compared to the IGFs, the IGFBP have received less attention in milk, although truncated IGFBPs and IGFBP-glycosylation have been described in milk. Thereby, complex control of local IGF-effects can be assumed on the levels of IGFBPs, proteases, and protease inhibitors. The present review collects the current knowledge both on presence and regulation of IGFs and IGFBPs in milk particularly from dairy animal species. As a rule higher levels of IGF-I, IGF-II, and IGFBPs are measured around parturition if compared to later time-points of lactation. In all farm animal species included in this review, it is found that the relative abundancies of IGFBPs in milk and serum are similar, with IGFBP-3 and -2 characterized by higher concentrations if compared to IGFBP-4 or -5. The concentrations of IGFs and IGFBPs in milk or dairy products can be altered by hormones, dairy processing, or fermentation. Because milk can be used for non-invasive biomarker research, quality management, and health monitoring, we discuss novel directions of IGF-analysis and potential on-site biomarker research in milk.
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Affiliation(s)
- Zianka Meyer
- Institute of Genome Biology, Leibniz-Institute for Farm Animal Biology (FBN), Dummerstorf, Germany
| | | | - Elisa Wirthgen
- Institute of Genome Biology, Leibniz-Institute for Farm Animal Biology (FBN), Dummerstorf, Germany; Ligandis GbR, Gülzow-Prüzen, Germany
| | - Sven Olm
- MQD M-V mbH, Institut für Analytik und Hygiene, Güstrow, Germany
| | - Harald M Hammon
- Institute of Nutritional Physiology "Oskar Kellner", Leibniz-Institute for Farm Animal Biology (FBN), Dummerstorf, Germany
| | - Andreas Hoeflich
- Institute of Genome Biology, Leibniz-Institute for Farm Animal Biology (FBN), Dummerstorf, Germany.
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Um CY, Fedirko V, Flanders WD, Judd SE, Bostick RM. Associations of Calcium and Milk Product Intakes with Incident, Sporadic Colorectal Adenomas. Nutr Cancer 2017; 69:416-427. [PMID: 28128980 PMCID: PMC6276115 DOI: 10.1080/01635581.2017.1274408] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Calcium intake has been consistently, modestly inversely associated with colorectal neoplasms, and supplemental calcium reduced adenoma recurrence in clinical trials. Milk products are the major source of dietary calcium in the United States, but their associations with colorectal neoplasms are unclear. Data pooled from three colonoscopy-based case-control studies of incident, sporadic colorectal adenoma (n = 807 cases, 2,185 controls) were analyzed using multivariable unconditional logistic regression. Residuals from linear regression models of milk with dietary calcium were estimated as the noncalcium, insulin-like growth factor 1-containing component of milk. For total, dietary, and supplemental calcium intakes, the adjusted odds ratios (ORs) comparing the highest to the lowest intake quintiles were 0.94 (95% confidence interval [CI] 0.69-1.30), 0.86 (CI 0.62-1.20), and 0.99 (CI 0.77-1.27), respectively. The corresponding ORs for consumption of total milk products, total milk, nonfat milk, total milk product residuals, and nonfat milk residuals were, respectively, 0.99, 0.90, 0.92, 0.94, and 0.95; all CIs included 1.0. For those who consumed any whole milk relative to those who consumed none, the OR was 1.15 (CI 0.89-1.49). These results are consistent with previous findings of modest inverse associations of calcium intakes with colorectal adenoma, but suggest that milk products may not be associated with adenoma.
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Affiliation(s)
- Caroline Y. Um
- Nutrition and Health Sciences Graduate Program, Emory University, Atlanta, GA
| | - Veronika Fedirko
- Nutrition and Health Sciences Graduate Program, Emory University, Atlanta, GA
- Department of Epidemiology, Emory University, Atlanta, GA
- Winship Cancer Institute, Emory University, Atlanta, GA
| | - W. Dana Flanders
- Department of Epidemiology, Emory University, Atlanta, GA
- Winship Cancer Institute, Emory University, Atlanta, GA
| | - Suzanne E. Judd
- Nutrition and Health Sciences Graduate Program, Emory University, Atlanta, GA
- Department of Biostatistics, School of Public Health, University of Alabama at Birmingham, Birmingham AL
| | - Roberd M. Bostick
- Nutrition and Health Sciences Graduate Program, Emory University, Atlanta, GA
- Department of Epidemiology, Emory University, Atlanta, GA
- Winship Cancer Institute, Emory University, Atlanta, GA
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Roudsari MR, Karimi R, Sohrabvandi S, Mortazavian AM. Health effects of probiotics on the skin. Crit Rev Food Sci Nutr 2016; 55:1219-40. [PMID: 24364369 DOI: 10.1080/10408398.2012.680078] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Skin is the largest organ of the body and is constantly exposed to physical, chemical, bacterial, and fungal challenges. It is well known that probiotics are helpful for specific disorders and different clinical studies have indicated that probiotics have special effects in cutaneous apparatus directly or indirectly that can be considerable from versatile aspects. Probiotic bacteriotherapy can have great potential in preventing and treating the skin diseases including eczema, atopic dermatitis, acne, and allergic inflammation or in skin hypersensitivity, UV-induced skin damage, wound protection, and as a cosmetic product. The current paper comprehensively reviews the different health effects of probiotics on the skin.
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Affiliation(s)
- M Rahmati Roudsari
- a Skin Research Center , Shahid Beheshti University of Medical Sciences , Tehran , Iran
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Zang J, Shen M, Du S, Chen T, Zou S. The Association between Dairy Intake and Breast Cancer in Western and Asian Populations: A Systematic Review and Meta-Analysis. J Breast Cancer 2015; 18:313-22. [PMID: 26770237 PMCID: PMC4705082 DOI: 10.4048/jbc.2015.18.4.313] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2015] [Accepted: 09/21/2015] [Indexed: 12/28/2022] Open
Abstract
Purpose To date, studies investigating the association between dairy consumption and breast cancer in women have produced conflicting results. As diet is an important, modifiable factor affecting cancer development, the aim of this study was to examine the association between dairy consumption and breast cancer risk. Methods PubMed, Embase, and Cochrane Library databases were searched with a priority for prospective cohort studies. Case-control studies were also considered in case of the absence of a cohort study. Results We analyzed 22 prospective cohort studies (1,566,940 participants) and five case-control studies (33,372 participants). High and modest dairy consumption (>600 and 400-600 g/day, respectively) significantly reduced the risk of breast cancer compared with low dairy consumption (<400 g/day; risk ratio [RR], 0.90, 95% confidence interval [CI], 0.83-0.98, and RR, 0.94, 95% CI, 0.91-0.98, respectively). A significant linear relationship between dairy consumption and breast cancer risk was found on dose-response analysis. Subgroup analysis found that yogurt (RR, 0.91; 95% CI, 0.83-0.99) and low-fat dairy (RR, 0.85; 95% CI, 0.75-0.96) reduced the risk of breast cancer, while other dairy product types did not. A reduced risk was observed for people in the United States (RR, 0.91; 95% CI, 0.83-0.99) and in those followed for ≥10 years (RR, 0.90; 95% CI, 0.81-0.99). Additionally, the highest level of dairy consumption among Asians was associated with a reduced risk of breast cancer (odds ratio, 0.74; 95% CI, 0.62-0.88). Conclusion Dairy consumption was inversely associated with the risk of developing breast cancer and this effect was dependent on the dose, dairy-type, and time.
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Affiliation(s)
- Jiajie Zang
- Department of Nutrition Hygiene, Shanghai Municipal Center for Disease Control and Prevention, Shanghai, China
| | - Meihua Shen
- Department of Emergency, Shanghai Armed Policed General Troops Hospital, Shanghai, China
| | - Sufa Du
- Department of Nutrition, University of North Carolina at Chapel Hill, Chapel Hill, USA
| | - Tianwen Chen
- Department of Breast & Thyroid Surgery, Affiliated Nanshan Hospital of Guangdong Medical College, Guangzhou, China
| | - Shurong Zou
- Department of Nutrition Hygiene, Shanghai Municipal Center for Disease Control and Prevention, Shanghai, China
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Carwile JL, Willett WC, Wang M, Rich-Edwards J, Frazier AL, Michels KB. Milk Consumption after Age 9 Years Does Not Predict Age at Menarche. J Nutr 2015; 145:1900-8. [PMID: 26136590 PMCID: PMC4516774 DOI: 10.3945/jn.115.214270] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Accepted: 06/08/2015] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Regular milk consumption during childhood and adolescence is recommended for bone health. However, milk consumption increases circulating insulin-like growth factor I concentrations, and may also accelerate puberty. OBJECTIVE We prospectively investigated the association between milk consumption and age at menarche in the Growing Up Today Study. METHODS Study participants were 5583 US girls who were premenarcheal and ages 9-14 y in 1996. Girls were followed through 2001, at which time 97% of noncensored participants had reported menarche. Frequency of milk and meat consumption was calculated with the use of annual youth/adolescent food frequency questionnaires from 1996-1998. Intake of related nutrients was also measured. Age at menarche was self-reported annually through 2001. RESULTS During follow-up, 5227 girls attained menarche over 10,555 accrued person-years. In models adjusted for dietary and sociodemographic predictors of menarche, frequency of milk consumption did not predict age at onset of menarche (for >3 glasses of milk/d vs. 1.1-4 glasses/wk, HR: 0.93; 95% CI: 0.83, 1.04). After additional adjustment for body size, premenarcheal girls consuming >3 glasses of milk daily were 13% less likely (95% CI: -3%, -23%; P-trend: <0.01) to attain menarche in the next month relative to those consuming 1.1-4 glasses/wk. Neither total meat nor red meat consumption was associated with age at menarche. CONCLUSIONS Our findings suggest that regular consumption of milk in girls aged ≥9 y is unlikely to substantially affect age at onset of menarche. Studies assessing associations between diet in early childhood and pubertal timing may be more illuminating.
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Affiliation(s)
| | - Walter C Willett
- Departments of Epidemiology,,Nutrition, and,Channing Division of Network Medicine, Department of Medicine, and
| | - Molin Wang
- Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA
| | - Janet Rich-Edwards
- Departments of Epidemiology,,Channing Division of Network Medicine, Department of Medicine, and,Connors Center for Women’s Health and Gender Biology, Brigham and Women’s Hospital, Boston, MA; and
| | - A Lindsay Frazier
- Channing Division of Network Medicine, Department of Medicine, and,Department of Pediatric Oncology, Dana-Farber/Children’s Hospital Cancer Center, Boston, MA
| | - Karin B Michels
- Departments of Epidemiology, Channing Division of Network Medicine, Department of Medicine, and Obstetrics and Gynecology Epidemiology Center, Department of Obstetrics, Gynecology and Reproductive Biology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA;
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Bowe W, Patel NB, Logan AC. Acne vulgaris, probiotics and the gut-brain-skin axis: from anecdote to translational medicine. Benef Microbes 2014; 5:185-99. [PMID: 23886975 DOI: 10.3920/bm2012.0060] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Acne vulgaris has long been postulated to feature a gastrointestinal mechanism, dating back 80 years to dermatologists John H. Stokes and Donald M. Pillsbury. They hypothesised that emotional states (e.g. depression and anxiety) could alter normal intestinal microbiota, increase intestinal permeability, and contribute to systemic inflammation. They were also among the first to propose the use of probiotic Lactobacillus acidophilus cultures. In recent years, aspects of this gut-brain-skin theory have been further validated via modern scientific investigations. It is evident that gut microbes and oral probiotics could be linked to the skin, and particularly acne severity, by their ability to influence systemic inflammation, oxidative stress, glycaemic control, tissue lipid content, and even mood. This intricate relationship between gut microbiota and the skin may also be influenced by diet, a current area of intense scrutiny by those who study acne. Here we provide a historical background to the gut-brain-skin theory in acne, followed by a summary of contemporary investigations and clinical implications.
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Affiliation(s)
- W Bowe
- Department of Dermatology, State University of New York Downstate Medical Center, 450 Clarkson Ave, Brooklyn, NY 11203, USA
| | - N B Patel
- New Jersey Medical School, University of Medicine and Dentistry of New Jersey, 150 Bergen Street, Newark, NJ 07103, USA
| | - A C Logan
- Genuine Health, 775 East Blithedale Avenue, Suite 364, Mill Valley, CA 94941, USA
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Clark A, Milbrandt TA, Hilt JZ, Puleo DA. Retention of insulin-like growth factor I bioactivity during the fabrication of sintered polymeric scaffolds. Biomed Mater 2014; 9:025015. [PMID: 24565886 DOI: 10.1088/1748-6041/9/2/025015] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The use of growth factors in tissue engineering offers an added benefit to cartilage regeneration. Growth factors, such as insulin-like growth factor I (IGF-I), increase cell proliferation and can therefore decrease the time it takes for cartilage tissue to regrow. In this study, IGF-I was released from poly(lactic-co-glycolic acid) (PLGA) scaffolds that were designed to have a decreased burst release often associated with tissue engineering scaffolds. The scaffolds were fabricated from IGF-I-loaded PLGA microspheres prepared by a double emulsion (W1/O/W2) technique. The microspheres were then compressed, sintered at 49 °C and salt leached. The bioactivity of soluble IGF-I was verified after being heat treated at 37, 43, 45, 49 and 60 °C. Additionally, the bioactivity of IGF-I was confirmed after being released from the sintered scaffolds. The triphasic release lasted 120 days resulting in 20%, 55% and 25% of the IGF-I being released during days 1-3, 4-58 and 59-120, respectively. Seeding bone marrow cells directly onto the IGF-I-loaded scaffolds showed an increase in cell proliferation, based on DNA content, leading to increased glycosaminoglycan production. The present results demonstrated that IGF-I remains active after being incorporated into heat-treated scaffolds, further enhancing tissue regeneration possibilities.
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Affiliation(s)
- Amanda Clark
- Department of Biomedical Engineering, University of Kentucky, Lexington, KY, USA
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Li Y, Jensen ML, Chatterton DEW, Jensen BB, Thymann T, Kvistgaard AS, Sangild PT. Raw bovine milk improves gut responses to feeding relative to infant formula in preterm piglets. Am J Physiol Gastrointest Liver Physiol 2014; 306:G81-90. [PMID: 24157971 DOI: 10.1152/ajpgi.00255.2013] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
For preterm neonates, the quality of the first milk is crucial for intestinal maturation and resistance to necrotizing enterocolitis (NEC). Among other factors, milk quality is determined by the stage of lactation and processing. We hypothesized that unprocessed mature bovine milk (BM; raw bovine milk) would have less bioactivity than corresponding bovine colostrum (BC) in a preterm pig model, but have improved bioactivity relative to its homogenized, pasteurized, spray-dried equivalent, whole milk powder (WMP), or a bovine milk protein-based infant formula (IF). For 5 days, newborn preterm pigs received parenteral and enteral nutrition consisting of IF (n = 13), BM (n = 13), or BC (n = 14). In a second study, WMP (n = 15) was compared with IF (n = 10) and BM (n = 9). Compared with pigs fed IF, pigs that were fed BM had significantly improved intestinal structure (mucosal weight, villus height) and function (increased nutrient absorption and enzyme activities, decreased gut permeability, nutrient fermentation, and NEC severity). BC further improved these effects relative to BM (lactase activity, lactose absorption, plasma citrulline, and tissue interleukin-8). WMP induced similar effects as BM, except for lactase activity and lactose absorption. In conclusion, the maturational and protective effects on the immature intestine decreased in the order BC>BM>WMP, but all three intact bovine milk diets were markedly better than IF. The stage of lactation (colostrum vs. mature milk) and milk processing (e.g., homogenization, fractionation, pasteurization, spray-drying) are important factors in determining milk quality during the early postnatal period of preterm neonates.
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Affiliation(s)
- Yanqi Li
- 30 Rolighedsvej, DK-1958 Frederiksberg C, Denmark.
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Ismail NH, Manaf ZA, Azizan NZ. High glycemic load diet, milk and ice cream consumption are related to acne vulgaris in Malaysian young adults: a case control study. BMC DERMATOLOGY 2012; 12:13. [PMID: 22898209 PMCID: PMC3470941 DOI: 10.1186/1471-5945-12-13] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 01/30/2012] [Accepted: 08/09/2012] [Indexed: 12/14/2022]
Abstract
BACKGROUND The role of dietary factors in the pathophysiology of acne vulgaris is highly controversial. Hence, the aim of this study was to determine the association between dietary factors and acne vulgaris among Malaysian young adults. METHODS A case-control study was conducted among 44 acne vulgaris patients and 44 controls aged 18 to 30 years from October 2010 to January 2011. Comprehensive acne severity scale (CASS) was used to determine acne severity. A questionnaire comprising items enquiring into the respondent's family history and dietary patterns was distributed. Subjects were asked to record their food intake on two weekdays and one day on a weekend in a three day food diary. Anthropometric measurements including body weight, height and body fat percentage were taken. Acne severity was assessed by a dermatologist. RESULTS Cases had a significantly higher dietary glycemic load (175 ± 35) compared to controls (122 ± 28) (p < 0.001). The frequency of milk (p < 0.01) and ice-cream (p < 0.01) consumptions was significantly higher in cases compared to controls. Females in the case group had a higher daily energy intake compared to their counterparts in the control group, 1812 ± 331 and 1590 ± 148 kcal respectively (p < 0.05). No significant difference was found in other nutrient intakes, Body Mass Index, and body fat percentage between case and control groups (p > 0.05). CONCLUSIONS Glycemic load diet and frequencies of milk and ice cream intake were positively associated with acne vulgaris.
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Affiliation(s)
- Noor Hasnani Ismail
- Dietetic Program, School of Healthcare Sciences, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300, Kuala Lumpur, Malaysia
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Ollikainen P, Riihimäki AM. Effects of heat-treatment on insulin-like growth factor-1 in bovine milk. Int Dairy J 2012. [DOI: 10.1016/j.idairyj.2011.11.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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Bowe WP, Logan AC. Acne vulgaris, probiotics and the gut-brain-skin axis - back to the future? Gut Pathog 2011; 3:1. [PMID: 21281494 PMCID: PMC3038963 DOI: 10.1186/1757-4749-3-1] [Citation(s) in RCA: 111] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2010] [Accepted: 01/31/2011] [Indexed: 02/07/2023] Open
Abstract
Over 70 years have passed since dermatologists John H. Stokes and Donald M. Pillsbury first proposed a gastrointestinal mechanism for the overlap between depression, anxiety and skin conditions such as acne. Stokes and Pillsbury hypothesized that emotional states might alter the normal intestinal microflora, increase intestinal permeability and contribute to systemic inflammation. Among the remedies advocated by Stokes and Pillsbury were Lactobacillus acidophilus cultures. Many aspects of this gut-brain-skin unifying theory have recently been validated. The ability of the gut microbiota and oral probiotics to influence systemic inflammation, oxidative stress, glycemic control, tissue lipid content and even mood itself, may have important implications in acne. The intestinal microflora may also provide a twist to the developing diet and acne research. Here we provide a historical perspective to the contemporary investigations and clinical implications of the gut-brain-skin connection in acne.
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Affiliation(s)
- Whitney P Bowe
- Department of Dermatology, State University of New York Downstate Medical Center, Brooklyn, New York, 11203, USA
| | - Alan C Logan
- Integrative Care Centre of Toronto, 3600 Ellesmere Road, Unit 4, Toronto, ON M1C 4Y8, Canada
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Wiley AS. Dairy and milk consumption and child growth: Is BMI involved? An analysis of NHANES 1999-2004. Am J Hum Biol 2010; 22:517-25. [PMID: 20155844 DOI: 10.1002/ajhb.21042] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Humans are unique among mammals in that many consume cow's milk or other dairy products well beyond the traditional age of weaning. Milk provides various nutrients and bioactive molecules to support growth and development, and the question arises as to whether this dietary behavior influences growth parameters. There is evidence that milk makes positive contributions to growth in height, but its associations with other aspects of body size, such as body mass index (BMI), are not well-established. National Health and Nutrition Examination Survey (NHANES) data from 1999 to 2004 and multivariate regression analysis were used to test the hypothesis that milk (g) or total dairy product consumption (kJ) is associated with higher BMI percentile among US White, Black, and Mexican-American children of age 2-4 years (n = 1,493) and 5-10 years (n = 2,526). Younger children in the highest quartile of dairy intake had higher BMIs (beta = 7.5-8.0; P < 0.01) than those in the lowest two quartiles. Controlling for energy intake eliminated differences between QIV and QI. Among children of 5-10 years of age dairy intake had no relationship to BMI. Young children in the highest quartile of milk intake had higher BMIs than all lower quartiles (beta = 7.1-12.8; beta = 6.3-11.8 in energy-controlled models; P < 0.05). Among children of 5-10 years of age, those in QIV for milk intake had higher BMIs than those in QII (beta = 8.3; beta = 7.1 in energy-controlled model; P < 0.01). Controlling for total protein or calcium did not change the results. Milk had more consistent positive associations with BMI than did dairy products, and these were strongest among children of 2-4 years of age.
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Affiliation(s)
- Andrea S Wiley
- Department of Anthropology, Indiana University, Bloomington, Indiana 47401, USA.
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Qin LQ, He K, Xu JY. Milk consumption and circulating insulin-like growth factor-I level: a systematic literature review. Int J Food Sci Nutr 2009; 60 Suppl 7:330-40. [PMID: 19746296 DOI: 10.1080/09637480903150114] [Citation(s) in RCA: 99] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Studies suggest that the circulating insulin-like growth factor I (IGF-I) level is positively associated with the prostate cancer risk. The association of milk consumption and circulating IGF-I level has been examined in epidemiological studies with inconsistent results. We conducted a systematic literature review to summarize and quantify the current evidence for milk or dairy product consumption and the circulating IGF-I level. We searched relevant papers published in English up to March 2009 in various databases. Fifteen cross-sectional studies and eight randomized controlled trials were finally identified. Ten cross-sectional studies showed statistically positive correlation between milk consumption and the circulating IGF-I level. Randomized controlled trials indicated that the circulating IGF-I level was significantly higher in the milk intervention group. After meta-analysis, the weighted mean difference of the circulating IGF-I level was 13.8 ng/ml (95% confidence interval: 6.1-21.5 ng/ml) comparing the intervention group with the control group. The current evidence suggests that milk consumption may increase the circulating IGF-I level.
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Affiliation(s)
- Li-Qiang Qin
- Department of Nutrition and Food Hygiene, School of Radiation Medicine and Public Health, Medical College of Soochow University, Suzhou, China.
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Berkey CS, Colditz GA, Rockett HRH, Frazier AL, Willett WC. Dairy consumption and female height growth: prospective cohort study. Cancer Epidemiol Biomarkers Prev 2009; 18:1881-7. [PMID: 19505921 PMCID: PMC3740511 DOI: 10.1158/1055-9965.epi-08-1163] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Because of its nutrients and anabolic hormones, cow's milk may promote height growth, which in turn has been related to breast cancer risk. We prospectively investigated associations between dairy intakes and height growth. METHODS A cohort of 5,101 girls from throughout the United States completed annual surveys (1996-2001, 2003), providing height, weight, and past-year diet. At baseline, all were premenarchal, ages 9 years and above, with no serious medical conditions. We studied three outcomes: annual height growth, peak growth velocity, and adult height. Multivariate models estimated the effects of milk, cheese, yogurt, and energy on subsequent growth, adjusted for race/ethnicity, age, prior height, and body mass index. Other models studied fats and proteins. RESULTS Premenarchal girls who drank >3 servings per day of milk grew 0.11 in. (P = 0.02) more the following year than girls consuming <1 serving per day. Yogurt (+0.13 in./cup; P = 0.02), but not cheese or total calories, predicted height growth. In a separate model, dairy protein (+0.034 in./10 g; P < 0.001) predicted height growth. Larger peak velocities were seen among girls reporting, at baseline, more milk (>3 glasses per day versus <1; +0.14 in., P = 0.01), more yogurt (+0.17 in./cup, P = 0.02), and, in a separate model, more dairy protein (+0.039 in./10 g; P = 0.003). Baseline milk and dairy protein predicted taller adults. Dairy protein was more important than dairy fat, for all outcomes. Nondairy animal protein and vegetable protein were never significant, nor were nondairy animal fat and vegetable fat. CONCLUSION Of the foods/nutrients studied, dairy protein had the strongest association with height growth. These findings suggest that a factor in the nonlipid phase of milk, but not protein itself, has growth-promoting action in girls.
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Affiliation(s)
- Catherine S Berkey
- Department of Medicine, Channing Laboratory, Brigham and Women's Hospital and Harvard Medical School Boston, MA 02115, USA.
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Beneficial health effects of milk and fermented dairy products--review. Folia Microbiol (Praha) 2008; 53:378-94. [PMID: 19085072 DOI: 10.1007/s12223-008-0059-1] [Citation(s) in RCA: 118] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2007] [Revised: 04/09/2008] [Indexed: 02/08/2023]
Abstract
Milk is a complex physiological liquid that simultaneously provides nutrients and bioactive components that facilitate the successful postnatal adaptation of the newborn infant by stimulating cellular growth and digestive maturation, the establishment of symbiotic microflora, and the development of gut-associated lymphoid tissues. The number, the potency, and the importance of bioactive compounds in milk and especially in fermented milk products are probably greater than previously thought. They include certain vitamins, specific proteins, bioactive peptides, oligosaccharides, organic (including fatty) acids. Some of them are normal milk components, others emerge during digestive or fermentation processes. Fermented dairy products and probiotic bacteria decrease the absorption of cholesterol. Whey proteins, medium-chain fatty acids and in particular calcium and other minerals may contribute to the beneficial effect of dairy food on body fat and body mass. There has been growing evidence of the role that dairy proteins play in the regulation of satiety, food intake and obesity-related metabolic disorders. Milk proteins, peptides, probiotic lactic acid bacteria, calcium and other minerals can significantly reduce blood pressure. Milk fat contains a number of components having functional properties. Sphingolipids and their active metabolites may exert antimicrobial effects either directly or upon digestion.
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Olsen SF, Halldorsson TI, Willett WC, Knudsen VK, Gillman MW, Mikkelsen TB, Olsen J. Milk consumption during pregnancy is associated with increased infant size at birth: prospective cohort study. Am J Clin Nutr 2007; 86:1104-10. [PMID: 17921389 DOI: 10.1093/ajcn/86.4.1104] [Citation(s) in RCA: 122] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Cow milk contains many potentially growth-promoting factors. OBJECTIVE The objective was to examine whether milk consumption during pregnancy is associated with greater infant size at birth. DESIGN During 1996-2002, the Danish National Birth Cohort collected data on midpregnancy diet through questionnaires and on covariates through telephone interviews and ascertained birth outcomes through registry linkages. Findings were adjusted for mother's parity, age, height, prepregnant BMI, gestational weight gain, smoking status, and total energy intake; father's height; and family's socioeconomic status The analyses included data from 50,117 mother-infant pairs. RESULTS Mean (+/-SD) consumption of milk was 3.1 +/- 2.0 glasses/d. Milk consumption was inversely associated with the risk of small-for gestational age (SGA) birth and directly with both large-for-gestational age (LGA) birth and mean birth weight (P for trend < 0.001). In a comparison of women drinking >or=6 glasses/d with those drinking 0 glasses/d, the odds ratio for SGA was 0.51 (95% CI: 0.39, 0.65) and for LGA was 1.59 (1.16, 2.16); the increment in mean birth weight was 108 g (74, 143 g). We also found graded relations (P < 0.001) for abdominal circumference (0.52 cm; 0.35, 0.69 cm), placental weight (26 g; 15, 38 g), birth length (increment: 0.31 cm; 0.15, 0.46 cm), and head circumference (0.13 cm; 0.04, 0.25 cm). Birth weight was related to intake of protein, but not of fat, derived from milk. CONCLUSION Milk intake in pregnancy was associated with higher birth weight for gestational age, lower risk of SGA, and higher risk of LGA.
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Affiliation(s)
- Sjurdur F Olsen
- Department of Epidemiology, Institute of Public Health, University of Aarhus, Aarhus, Denmark.
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Yun ZY, Zhang HP, Cai XZ, Wang AP, Zhang LB. Kinetic and thermodynamic studies on the thermal denaturation of bovine milk insulin-like growth factor-I in model systems. ACTA ACUST UNITED AC 2007. [DOI: 10.1051/lait:2007005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Gao H, Liu Y, Lu S, Xiang B, Wang C. Alteration of Insulin-like Growth Factor-1 Expression After Middle Cerebral Artery Occlusion in Monkeys and Rats: Complementary DNA Microarray, Immunohistochemistry, and In Situ Hybridization Studies. J Stroke Cerebrovasc Dis 2006; 15:158-63. [PMID: 17904069 DOI: 10.1016/j.jstrokecerebrovasdis.2006.05.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2006] [Accepted: 05/22/2006] [Indexed: 10/24/2022] Open
Abstract
It is well established that insulin-like growth factor (IGF)-1 has potent neuroprotective effects on cerebral ischemia in the rat and sheep model. In order to investigate whether it has neuroprotective effects on brain insult in human stroke, as one part of serial subhuman primate stroke research, the present study was designed to observe whether IGF-1 messenger RNA (mRNA) and protein is expressed in middle cerebral artery occlusion in monkeys and rats. A total of 12,800 dots complementary DNA microarray, in situ hybridization, and immunohistochemistry were used. Complementary DNA microarray showed that among the nearly 8000 genes, approximately 8% of the total number of genes examined was affected after ischemia/reperfusion injury especially in the growth factor family including IGF-1 in the ischemic region. The decreased IGF-1 mRNA and protein expression was found in the insular striatum, but there was an increased mRNA expression and unchanged protein expression in the hippocampus 24 hours after ischemia. The results suggested that IGF-1 might contribute to the neuroprotective pathway in a pattern different from that of rats, and it might play a role in protection of ischemic injured neuronal cells after monkey focal cerebral ischemia.
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Affiliation(s)
- Huanmin Gao
- Department of Neurology, Second Affiliated Hospital of Qingdao University Medical College, Shandong, China, Qingdao, China
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