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Fitzgerald JS, Swanson BJ, Larson-Meyer DE. Vitamin D Knowledge, Awareness, and Attitudes of Adolescents and Adults: A Systematic Review. JOURNAL OF NUTRITION EDUCATION AND BEHAVIOR 2023; 55:585-595. [PMID: 37389497 DOI: 10.1016/j.jneb.2023.04.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 04/21/2023] [Accepted: 04/27/2023] [Indexed: 07/01/2023]
Abstract
INTRODUCTION The aims of this systematic review were 2-fold: (1) evaluate the effect of vitamin D educational interventions on serum 25-hydroxyvitamin D (25-OHD) concentration in adolescents (aged 10-19 years) and adults, and (2) assess the association between serum 25-OHD concentration and vitamin D knowledge, awareness of vitamin D deficiency risk, and attitudes toward behaviors associated with acquiring vitamin D. METHODS Medline, CINAHL, Embase, and SPORTDiscus were systematically searched for studies reporting associations between serum 25-OHD concentration and vitamin D knowledge, awareness, and attitudes. Results were summarized narratively. Effect sizes were calculated when data were available. RESULTS Eight studies reported experimental effects (2 randomized controlled trials, 1 cluster randomized trial, 4 quasi-experiments, 1 clinical audit), and 14 reported cross-sectional associations. Seven of 8 interventions reported no effect of educational interventions on serum 25-OHD concentration. A slight majority (53%; κ = 19) of studies reported statistically significant associations between serum 25-OHD concentration and vitamin D knowledge and attitudes. IMPLICATIONS FOR RESEARCH AND PRACTICE The few educational interventions employed to increase serum 25-OHD concentration lack effectiveness. Future studies may use randomized controlled trial designs, enroll those at risk for vitamin D insufficiency and underrepresented in the literature, increase the salience of the information to the target population, and include safe sun exposure recommendations.
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Affiliation(s)
- John S Fitzgerald
- Department of Education, Health and Behavior Studies, University of North Dakota, Grand Forks, ND.
| | - Brenna J Swanson
- Department of Nutrition and Dietetics, University of North Dakota, Grand Forks, ND
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Majid MA, Hassan WN, Ridha AF. Prevalence of 25-Hydroxyvitamin D (Vitamin D) Deficiency in a Group of Infertile Women from Baghdad City. Biochem Res Int 2023; 2023:6597730. [PMID: 37350868 PMCID: PMC10284658 DOI: 10.1155/2023/6597730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 04/24/2023] [Accepted: 06/05/2023] [Indexed: 06/24/2023] Open
Abstract
Background Infertility is a common issue affecting a large number of Iraqi women of reproductive age. The relationship between vitamin D deficiency and infertility has previously drawn the attention of gynecologists, and an increasing number of vitamin D testing has been requested. Methods 120 women were enrolled in this study between April 2019 and April 2020. Patients were divided into two groups comprising sixty women complaining of infertility, with the other 60 women being fertile and enrolled as controls. All patients were assessed for vitamin D level. Results In the fertile study group, patients with deficient, insufficient, and sufficient level of vitamin were 28%, 23%, and 48%, respectively (these numbers were rounded to the nearest whole digit, as the numbers for the infertile group were given with that level of precision), whereas the infertile study group showed a statistically significant (p value = 0.002) distribution of vitamin levels with 50%, 35%, and 15% of women being deficient, insufficient, and sufficient, respectively. Conclusions Vitamin D is significantly deficient in infertile patients which suggests a possible, positive impact if vitamin D is considered in the management of female infertility. Further study with more participants is highly recommended.
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Affiliation(s)
- Muthana Anad Majid
- Department of Basic Sciences, College of Dentistry, Mustansiryiah University, Palestine Street, Baghdad, Iraq
| | - Wafaa Nasser Hassan
- Department of Basic Sciences, College of Medicine, Ibn Sina University for Medical and Pharmaceutical Sciences, Qadisya District, Baghdad, Iraq
| | - Amna Fadhil Ridha
- Department of Obstetrics and Gynecology, College of Medicine, Mustansiryah University, Yarmouk Hospital, Baghdad, Iraq
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Siddiqee MH, Bhattacharjee B, Hasan M, Shojon M, Hassan M, Rouf RR, Siddiqi UR, Rabbi F, Siddiqi UR. Risk perception of sun exposure and knowledge of vitamin D among the healthcare providers in a high-risk country: a cross-sectional study. BMC MEDICAL EDUCATION 2023; 23:46. [PMID: 36670407 PMCID: PMC9862573 DOI: 10.1186/s12909-023-04001-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Accepted: 01/04/2023] [Indexed: 06/17/2023]
Abstract
BACKGROUND High levels of vitamin D deficiency are commonly reported even in regions with abundant sunshine. This necessitates a comprehensive understanding of the determinants that influence sun exposure practices. As the primary source of health-related knowledge for the general public, the attitude of the healthcare professionals towards sunlight and their awareness related to vitamin D deficiency can be critical in this regard. METHODS A cross-sectional survey was conducted among 2,242 physicians, intern doctors, and senior medical students in Bangladesh from October 2019 to February 2020. A pre-tested structured questionnaire (containing twelve close-ended questions) was used. The perceptions of health risks due to sun exposure, and basic knowledge of the physiological and epidemiological aspects of vitamin D deficiency were tested. RESULTS An overall negative attitude towards sunlight in the context of Bangladesh was highlighted - 68% participants thought regular sun exposure would be harmful or very harmful; 26% thought the level of UV radiation was very high; 44% recommended using sunscreen always; skin burns, heat stroke, and cancer were selected as potential consequences of regular sun exposure by 45%, 21%, and 30% respondents respectively. Overall knowledge regarding vitamin D deficiency appeared to be biased towards bone health; other symptoms and associated illnesses not having obvious link to Calcium-metabolism were identified much lesser frequently. Furthermore, 'sunrise to 10 am' was identified as the best time to get vitamin D by 69% participants; 60% believed < 30 min of weekly sun exposure would be sufficient for the Bangladeshi population; an only 33% identified that prevalence of vitamin D insufficiency in Bangladesh would be 50% or more. Taking vitamin D-rich food was suggested by more respondents over regular sun exposure (43% vs. 33%) as more effective remedial strategy to curb vitamin D deficiency in Bangladesh. CONCLUSION In addition to highlighting some crucial knowledge gaps, results from this study provides a comprehensive baseline dataset for knowledge and attitude regarding the public health aspects of vitamin D deficiency among the healthcare providers in Bangladesh, which would be generalizable to other countries with similar socio-demographic context, and will facilitate taking more effective policies worldwide.
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Affiliation(s)
- Mahbubul H Siddiqee
- Department of Mathematics and Natural Sciences, Microbiology Program, School of Data and Sciences, BRAC University, 1212, Dhaka, Bangladesh.
- Research Wing, Red & White Innovations. Mirpur DOHS, 1216, Dhaka, Bangladesh.
| | - Badhan Bhattacharjee
- Department of Mathematics and Natural Sciences, Microbiology Program, School of Data and Sciences, BRAC University, 1212, Dhaka, Bangladesh
- Research Wing, Red & White Innovations. Mirpur DOHS, 1216, Dhaka, Bangladesh
| | - Mahbub Hasan
- Biomedical Research Foundation, 1230, Dhaka, Bangladesh
| | | | - Mehedi Hassan
- Department of Biochemistry and Food Analysis, Patuakhali Science and Technology University, 8602, Patuakhali, Bangladesh
| | - Rashawan Raziur Rouf
- Biomedical Research Foundation, 1230, Dhaka, Bangladesh
- Shaheed Suhrawardy Medical College and Hospital, 1207, Dhaka, Bangladesh
| | | | - Fazlay Rabbi
- Communicable Disease Control (CDC) Unit, Directorate General of Health Services, 1212, Dhaka, Bangladesh
| | - Umme Ruman Siddiqi
- Communicable Disease Control (CDC) Unit, Directorate General of Health Services, 1212, Dhaka, Bangladesh
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Al-Daghri NM, Alfawaz HA, Khan N, Saadawy GM, Sabico S. Vitamin D Knowledge and Awareness Is Associated with Physical Activity among Adults: A Cross-Sectional Survey. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:1601. [PMID: 36674356 PMCID: PMC9867161 DOI: 10.3390/ijerph20021601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2022] [Revised: 01/10/2023] [Accepted: 01/14/2023] [Indexed: 06/17/2023]
Abstract
The relation between knowledge and awareness of vitamin D (VD) and physical activity in adults has not been well studied. The present cross-sectional study aims to demonstrate this relation among adults living in Saudi Arabia. A total of 774 adults participated and were stratified based on self-reports of whether they were physically active (PA group, N = 562) or not (non-PA, N = 212). The prevalence of VD awareness and its health effects were significantly higher in the PA group compared with their counterparts (97 vs. 93.4%; p = 0.02 and 92.3 vs. 81.6%; p < 0.001, respectively). Sunlight was the preferred overall source of VD among the PA group (91.1%) followed by food, supplements, and fortified foods. Sardine, salmon, oily fish (63.7%) and eggs (54.6%) were reported as good dietary sources. Other positive attitudes, represented by taking supplement or multivitamins (51.2%), high sun exposure (33.1%), and daily duration of exposure to sunlight (15−30 min; 53.4%) were higher in the PA than the non-PA group (p values < 0.05). The body parts exposed to the sun among the PA group were arms (67.1%), hands (64.1%), face and hands (62.5%), legs (58.5%), and face (53.2%), while sunscreen cream (47.2%) was their preferred sun-protection method. High levels of knowledge and positive attitudes were reported by the PA group compared with the non-PA group in regard to walking outdoors for sun exposure (80.6 vs. 62.7%; p < 0.001). Information about good dietary sources, the role of VD in human health, associated diseases, positive attitudes to sun exposure, and the use of supplements or multivitamins were among the determinants of VD knowledge and awareness. In conclusion, VD knowledge and awareness are positively associated with self-reported physical activity in adults. Further objective classifications of PA may strengthen the results of the present investigation.
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Affiliation(s)
| | - Hanan A. Alfawaz
- Biochemistry Department, King Saud University, Riyadh 11451, Saudi Arabia
- Department of Food Science & Nutrition, College of Food & Agriculture Science, King Saud University, Riyadh 11495, Saudi Arabia
| | - Nasiruddin Khan
- Department of Food Science and Human Nutrition, College of Applied and Health Sciences, A’Sharqiyah University, Ibra 400, Oman
| | - Gamal M. Saadawy
- Biochemistry Department, King Saud University, Riyadh 11451, Saudi Arabia
| | - Shaun Sabico
- Biochemistry Department, King Saud University, Riyadh 11451, Saudi Arabia
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AlBlooshi S, Al Anouti F, Hijazi R. Knowledge about Vitamin D among Women in the United Arab Emirates. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:1252. [PMID: 36674002 PMCID: PMC9859501 DOI: 10.3390/ijerph20021252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 01/08/2023] [Accepted: 01/09/2023] [Indexed: 06/17/2023]
Abstract
Vitamin D deficiency is a significant public health issue as it affects almost 90% of the United Arab Emirates (UAE) population. A bigger portion of this percentage is women due to the physiological changes throughout their life cycle. This study aims to assess the knowledge about vitamin D among women in the UAE. This is a quantitative cross-sectional study. Using snowball sampling, an electronic questionnaire was sent to women aged 18 years and above. Overall, 1537 women completed the questionnaire. The participants had mean scores of 49.4 ± 10.7 and 59.6 ± 14.6 for general and nutritional knowledge, respectively. Factors associated with higher scores included older age, marriage, higher educational level, and having tested their vitamin D levels. Factors associated with lower scores included the history of a chronic illness and being employed. Findings indicate that women in this study showed a low level of vitamin D knowledge specifically regarding the non-skeletal benefits of vitamin D and factors that affect vitamin D synthesis. Therefore, health education and promotion programs must be implemented across the UAE to improve overall awareness about vitamin D.
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Affiliation(s)
- Sharifa AlBlooshi
- Department of Health Sciences, College of Natural and Health Sciences, Zayed University, Dubai P.O. Box 19282, United Arab Emirates
| | - Fatme Al Anouti
- Department of Health Sciences, College of Natural and Health Sciences, Zayed University, Abu Dhabi P.O. Box 144534, United Arab Emirates
| | - Rafiq Hijazi
- Department of Mathematics and Statistics, College of Natural and Health Sciences, Zayed University, Abu Dhabi P.O. Box 144534, United Arab Emirates
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Hamhoum AS, Aljefree NM. Knowledge and Attitudes towards Vitamin D among Health Educators in Public Schools in Jeddah, Saudi Arabia: A Cross-Sectional Study. Healthcare (Basel) 2022; 10:healthcare10122358. [PMID: 36553883 PMCID: PMC9777692 DOI: 10.3390/healthcare10122358] [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: 10/04/2022] [Revised: 11/20/2022] [Accepted: 11/21/2022] [Indexed: 11/25/2022] Open
Abstract
Health educators in schools are a very important part of the education system. Considering the significant prevalence of vitamin D deficiency in the Kingdom of Saudi Arabia, it is important to investigate the knowledge of and attitude towards vitamin D among health educators. This study aims to examine the knowledge of and attitude towards vitamin D among health educators in public schools in Jeddah as well as to identify the associated sociodemographic factors. A cross-sectional study was conducted between May and December 2021 among 231 health educators. Data were collected via a self-administered online questionnaire. The results revealed that only 45% of health educators had good knowledge of vitamin D, and approximately 43% had a positive attitude towards vitamin D. Additionally, those who had good knowledge of vitamin D were males (58.7%) (p = 0.005) and had a bachelor's degree (74%) (p = 0.01). Moreover, male health educators aged 45-54 years had a positive attitude towards vitamin D (3.8 ± 0.7) (p = 0.007). In addition, female health educators who were divorced (3.8 ± 0.7) and widowed (3.6 ± 0.5) (p = 0.04) and those who were administrators (3.3 ± 0.7) (p = 0.01) had a positive attitude towards vitamin D. The Ministry of Education (MOE) in the Kingdom must educate health educators through educational programmes that aim to increase the knowledge of and develop a positive attitude towards vitamin D intake.
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Al-Daghri NM, Alfawaz H, Khan N, Al-Saleh Y, Aljohani NJ, Aldisi D, Alkhaldi G, Alqarni AM, Almasoudi HO, Alshehri LA, Alanzi RM, Khattak MNK, Elsaid MA, Alokail MS. Association of Vitamin D Knowledge, Behavior and Attitude with BMI Status among Arab Adults. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:11107. [PMID: 36078823 PMCID: PMC9518129 DOI: 10.3390/ijerph191711107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Revised: 09/01/2022] [Accepted: 09/04/2022] [Indexed: 06/15/2023]
Abstract
This study aims to investigate the association of vitamin D (VD) knowledge, behavior, and attitude with BMI status among Saudi adults. This cross-sectional online survey included a total of 774 participants (M/F: 239/535). Knowledge about the overall sources of VD was highest in OB participants in correctly identifying sunlight (95.1%; p < 0.001) while significantly more OW participants answered food (83.1%; p = 0.04) and fortified food (66.5%; p = 0.02). However, 18.9% of OB participants also wrongly identified air as a VD source and this was significantly higher than in other groups (p = 0.03). OW participants were 50% less likely to identify salmon and fish oil (odds ratio, OR 0.5 (95% Confidence interval, CI 0.4-0.7); p < 0.01) and 40% more likely to identify chicken (OR 1.4 (1.0-1.9); p < 0.05) as dietary sources of VD than controls. On the other hand, OB participants were almost three times more likely to know that sunlight exposure is the main source of VD than controls (OR 2.65 (1.2-6.0); p < 0.05). In conclusion, while VD knowledge overall was apparently high in Saudi adults regardless of BMI status, the quality of knowledge among OB and OW individuals appear inconsistent, particularly in terms of identifying the right VD sources. Public health awareness campaigns should include the correction of VD misconceptions so that high-risk populations are able to make well-informed decisions in achieving optimal VD levels.
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Affiliation(s)
- Nasser M. Al-Daghri
- Chair for Biomarkers of Chronic Diseases, Biochemistry Department, King Saud University, Riyadh 11451, Saudi Arabia
| | - Hanan Alfawaz
- Chair for Biomarkers of Chronic Diseases, Biochemistry Department, King Saud University, Riyadh 11451, Saudi Arabia
- Department of Food Science & Nutrition, College of Food & Agriculture Science, King Saud University, Riyadh 11495, Saudi Arabia
| | - Nasiruddin Khan
- Department of Food Science and Human Nutrition, College of Applied and Health Sciences, A’Sharqiyah University, Ibra 400, Oman
| | - Yousef Al-Saleh
- Chair for Biomarkers of Chronic Diseases, Biochemistry Department, King Saud University, Riyadh 11451, Saudi Arabia
- College of Medicine, King Saud bin Abdulaziz University for Health Sciences, Riyadh 22490, Saudi Arabia
- King Abdullah International Medical Research Center, Riyadh 11481, Saudi Arabia
- Department of Medicine, King Abdulaziz Medical City, Ministry of National Guard Health Affairs, Riyadh 11461, Saudi Arabia
| | - Naji J. Aljohani
- Chair for Biomarkers of Chronic Diseases, Biochemistry Department, King Saud University, Riyadh 11451, Saudi Arabia
- Obesity Endocrine and Metabolism Center, King Fahad Medical City, Riyadh 11525, Saudi Arabia
| | - Dara Aldisi
- Department of Community Health Sciences, College of Applied Medical Sciences, King Saud University, Riyadh 11451, Saudi Arabia
| | - Ghadah Alkhaldi
- Department of Community Health Sciences, College of Applied Medical Sciences, King Saud University, Riyadh 11451, Saudi Arabia
| | - Amani M. Alqarni
- Department of Food Science & Nutrition, College of Food & Agriculture Science, King Saud University, Riyadh 11495, Saudi Arabia
| | - Hadeel O. Almasoudi
- Department of Food Science & Nutrition, College of Food & Agriculture Science, King Saud University, Riyadh 11495, Saudi Arabia
| | - Lina A. Alshehri
- Department of Food Science & Nutrition, College of Food & Agriculture Science, King Saud University, Riyadh 11495, Saudi Arabia
| | - Rinad M. Alanzi
- Department of Food Science & Nutrition, College of Food & Agriculture Science, King Saud University, Riyadh 11495, Saudi Arabia
| | - Malak N. K. Khattak
- Chair for Biomarkers of Chronic Diseases, Biochemistry Department, King Saud University, Riyadh 11451, Saudi Arabia
| | - Mohamed A. Elsaid
- Chair for Biomarkers of Chronic Diseases, Biochemistry Department, King Saud University, Riyadh 11451, Saudi Arabia
| | - Majed S. Alokail
- Protein Research Chair, Biochemistry Department, King Saud University, Riyadh 11451, Saudi Arabia
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SaeidiFard N, Haeri-Mehrizi AA, Akbarzadeh Z, Janbozorgi N, Montazeri A, Yaseri M, Shab-Bidar S. Association of health literacy and nutritional literacy with sun exposure in adults using structural equation modelling. BMC Public Health 2022; 22:1162. [PMID: 35689215 PMCID: PMC9185953 DOI: 10.1186/s12889-022-13465-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Accepted: 05/18/2022] [Indexed: 01/04/2023] Open
Abstract
Background Inadequate health and nutritional literacy is a common problem among adults, associated with poor health outcomes. Therefore, this study aimed to investigate the relationship between health literacy and nutritional literacy to sun exposure behaviour. Methods We conducted a cross-sectional study on 261 adults (18–65 years) in Iran. Data was collected on knowledge, motivation, health literacy, nutritional literacy, and sun exposure behaviour using an interview-assisted questionnaire. Using the information–motivation–behavioural skills model and structural equation modeling, we tested whether health and nutritional literacy were associated with the relationships between knowledge of vitamin D, attitudes toward sun exposure, and sun exposure behaviour. Different models using structural equation modeling were performed to analyze the data. Results The finding showed that health literacy (β = 0.29, p < 0.001) and nutritional literacy (β = 0.14, p = 0.02) was directly associated with sunlight exposure. Indirect relationships also existed between knowledge and sunlight exposure through health literacy (β = 0.33, p < 0.001) and nutritional literacy (β = 0.22, p = 0.01). The model had good fit (x2/df = 1.422; RMSEA = 0.040; CFI = 0.851; NFI = 0.657). There was no significant relationship between health literacy and motivation (β = 0.11, p = 0.16), nutritional literacy and motivation (β = 0.06, p = 0.42) and motivation and sun exposure (β = 0.01, p = 0.91). Conclusions The findings showed that individuals with sufficient health literacy and nutritional literacy were more likely to have exposure to sunlight. Health and nutritional literacy should be considered when educating adults about vitamin D supplements and sunlight exposure.
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Affiliation(s)
- Nasim SaeidiFard
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), No 44, Hojjat-dost Alley, Naderi St, Keshavarz Blvd, Tehran, Iran
| | - Ali Asghar Haeri-Mehrizi
- Health Metrics Research Center, Iranian Institute for Health Sciences Research, ACECR, Tehran, Iran
| | - Zahra Akbarzadeh
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), No 44, Hojjat-dost Alley, Naderi St, Keshavarz Blvd, Tehran, Iran
| | - Nasim Janbozorgi
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), No 44, Hojjat-dost Alley, Naderi St, Keshavarz Blvd, Tehran, Iran
| | - Ali Montazeri
- Health Metrics Research Center, Iranian Institute for Health Sciences Research, ACECR, Tehran, Iran.,Faculty of Humanity Sciences, University of Science and Culture, Tehran, Iran
| | - Mehdi Yaseri
- Department of Epidemiology and Biostatistics, Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - Sakineh Shab-Bidar
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), No 44, Hojjat-dost Alley, Naderi St, Keshavarz Blvd, Tehran, Iran.
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Aljefree NM, Almoraie NM, Shatwan IM. Association of two types of dietary pattern scores with cardiovascular disease risk factors and serum 25 hydroxy vitamin D levels in Saudi Arabia. Food Nutr Res 2021; 65:5481. [PMID: 34262414 PMCID: PMC8254461 DOI: 10.29219/fnr.v65.5481] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Revised: 03/18/2021] [Accepted: 04/15/2021] [Indexed: 11/20/2022] Open
Abstract
Background Cardiovascular disease (CVD) is a main cause of mortality and disability worldwide. One of the key factors in the soaring prevalence of CVD globally has been nutrition transitions and changes in dietary patterns. Objective This study investigated the association between two diet scores, namely, a high-fat dietary (HFD) pattern score and a Mediterranean diet (MedDiet) score, and CVD risk factors (obesity, hypertension, total cholesterol, and blood glucose) and serum 25 hydroxy vitamin D (25[OH]D) levels. Methods Three hundred twenty-one participants were included in this study. Fasting blood tests were collected from all participants for biochemical measurements. Blood pressure and anthropometric measurements were also taken. A validated, semi-quantitative food frequency questionnaire was used to collect data on participants’ dietary intake. Dietary scores for the HFD pattern were calculated based on recommended food groups. MedDiet scores were calculated based on a previously validated method that contains 14 questions related to MedDiet. Both diet scores were classified into tertiles. Linear regression analyses were performed to assess the statistical significance of the tertile groups. Result A significant association was found between HFD score and obesity when comparing the lowest tertile (27.3±4.6 kg/m2) of HFD scores with the medium tertile (29.2±5.7 kg/m2; P = 0.02). A higher HFD score was significantly associated with lower 25(OH)D levels (P = 0.02). In addition, a significant association was observed between MedDiet scores and 25(OH)D levels, with an increase in MedDiet score resulting in an increase in 25(OH)D levels (P = 0.01). Furthermore, a significant negative association between MedDiet scores and low-density lipoprotein levels was reported only in participants with CVD (P = 0.03). Conclusion The results of this study revealed that HFD and MedDiet scores might have a role in the development of CVD and vitamin D deficiency among the Saudi Arabian population. Further studies are required using diet scores to assess the quality of dietary patterns and their association with an increased risk of diseases in Saudi Arabians.
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Affiliation(s)
- Najlaa M Aljefree
- Food and Nutrition Department, Faculty of Human Sciences and Design, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Noha M Almoraie
- Food and Nutrition Department, Faculty of Human Sciences and Design, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Israa M Shatwan
- Food and Nutrition Department, Faculty of Human Sciences and Design, King Abdulaziz University, Jeddah, Saudi Arabia
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Neville JJ, Palmieri T, Young AR. Physical Determinants of Vitamin D Photosynthesis: A Review. JBMR Plus 2021; 5:e10460. [PMID: 33553995 PMCID: PMC7839826 DOI: 10.1002/jbm4.10460] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 12/16/2020] [Accepted: 12/17/2020] [Indexed: 12/18/2022] Open
Abstract
Vitamin D synthesis by exposure of skin to solar ultraviolet radiation (UVR) provides the majority of this hormone that is essential for bone development and maintenance but may be important for many other health outcomes. This process, which is the only well-established benefit of solar UVR exposure, depends on many factors including genetics, age, health, and behavior. However, the most important factor is the quantity and quality of UVR reaching the skin. Vitamin D synthesis specifically requires ultraviolet B (UVB) radiation that is the minority component (<5%) of solar UVR. This waveband is also the most important for the adverse effects of solar exposure. The most obvious of which is sunburn (erythema), but UVB is also the main cause of DNA damage to the skin that is a prerequisite for most skin cancers. UVB at the Earth's surface depends on many physical and temporal factors such as latitude, altitude, season, and weather. Personal, cultural, and behavioral factors are also important. These include skin melanin, clothing, body surface area exposed, holiday habits, and sunscreen use. There is considerable disagreement in the literature about the role of some of these factors, possibly because some studies have been done by researchers with little understanding of photobiology. It can be argued that vitamin D supplementation obviates the need for solar exposure, but many studies have shown little benefit from this approach for a wide range of health outcomes. There is also increasing evidence that such exposure offers health benefits independently of vitamin D: the most important of which is blood-pressure reduction. In any case, public health advice must optimize risk versus benefit for solar exposure. It is fortunate that the individual UVB doses necessary for maintaining optimal vitamin D status are lower than those for sunburn, irrespective of skin melanin. © 2020 The Authors. JBMR Plus published by Wiley Periodicals LLC. on behalf of American Society for Bone and Mineral Research.
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Affiliation(s)
- Jonathan J Neville
- St John's Institute of Dermatology, School of Basic & Medical Biosciences King's College London London United Kingdom
| | - Tommaso Palmieri
- St John's Institute of Dermatology, School of Basic & Medical Biosciences King's College London London United Kingdom
| | - Antony R Young
- St John's Institute of Dermatology, School of Basic & Medical Biosciences King's College London London United Kingdom
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Suryadinata RV, Lorensia A. Frekuensi Asupan Makanan, Pengetahuan Vitamin D dan Obesitas Pada Kelompok Usia Lanjut. AMERTA NUTRITION 2020. [DOI: 10.20473/amnt.v4i1.2020.43-48] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Background: Most elderly age groups in Indonesia experience vitamin D deficiency. Increasing age and decreasing food intake of vitamin D will trigger an increase in metabolic diseases. One of the most common effects of metabolic diseases is obesity. Unhealthy diet can reduce consumption of foods that contain sources of vitamin D. The suitability of diet in preventing vitamin D deficiency is influenced by the level of knowledge about the type of food, benefits and needs about vitamin D. Objectives: To analyze the relationship of vitamin D diet in older people with obesity to the level of knowledge of vitamin D.Methods: This was analytic observational study with case control design. Data collection technique was using purposive sampling. The sample in this research were geriatric with obesity and non-obesity. Subjects in each group were 88 elderly people according to inclusion and exclusion criteria. Instruments in this research were Food Frequency Questionnaire (FFQ) and questionnaire knowledge of vitamin D amounted to 11 questions that have been done validity (r> 0.361) and reliability (Cronbach's Alpha> 0.6). Chi Square test was used to compare age factor with food intake and vitamin D knowledge. Results: There was significant relationship between the level of knowledge and the pattern of vitamin D intake in old age (r = 0.293; p = 0.000). However there was no difference between intake patterns and level of knowledge on vitamin D in elderly obese and non-obese (p> 0.05).Conclusion: increased in vitamin D knowledge can improve food intake patterns in geriatric.ABSTRAKLatar Belakang: Kelompok usia lanjut di indonesia sebagian besar mengalami defisiensi vitamin D. Pertambahan usia dan penurunan asupan makanan vitamin D akan memicu peningkatan penyakit metabolik. Salah satu dampak penyakit metabolik yang paling sering terjadi adalah obesitas. Pola makan yang tidak sesuai dapat menurunkan konsumsi makanan yang mengandung sumber vitamin D. Kesesuaian pola makan dalam mencegah defisiensi vitamin D salah satunya dipengaruhi oleh tingkat pengetahuan mengenai jenis makanan, manfaat dan kebutuhan tubuh akan vitamin D.Tujuan: Melihat hubungan pola makan dan pengetahuan vitamin D pada usia lanjut dengan obesitas.Metode: Penelitian ini adalah observational dengan desain case control. Teknik pengumpulan data menggunakan purposive sampling. Sampel pada penelitian ini adalah masyarakat pada usia lanjut dengan obesitas dan non-obesitas. Subjek penelitian pada tiap kelompok berjumlah 88 orang yang memenuhi kriteria inklusi dan eksklusi. Instrumen pada penelitian ini adalah Food Frequency Questionnaire (FFQ) dan kuisioner pengetahun vitamin D berjumlah 11 soal yang telah dilakukan validitas (r>0,361) dan reliabilitas (Cronbach’s Alpha > 0,6). Uji Chi Square digunakan untuk melihat hubungan pola makan vitamin D dan tingkat pengetahuan pada usia lanjut dengan obesitas dan non-obesitas.Hasil: Adanya hubungan tingkat pengetahuan dan pola asupan vitamin D pada usia lanjut (r=0,293; p=0,000). Namun tidak terdapat perbedaan antara pola asupan dan tingkat pengetahuan terhadap vitamin D pada lansia obesitas dan non obesitas (p>0,05).Kesimpulan: Peningkatan pengetahuan tentang vitamin D dapat memperbaiki pola asupan makanan pada usia lanjut.
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Anwar M, El-Dahiyat F, Jairoun A, Raed R, Butt I, Abdel-Majid W, Abdelgadir H. The sunshine under our skin: public knowledge and practices about vitamin D deficiency in Al Ain, United Arab Emirates. Arch Osteoporos 2019; 14:111. [PMID: 31758340 DOI: 10.1007/s11657-019-0671-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Accepted: 11/08/2019] [Indexed: 02/03/2023]
Abstract
UNLABELLED This cross-sectional study among members of public showed that people generally had good knowledge and awareness about vitamin D. However, inconsistencies between awareness and attitudes were observed. Our findings reinforce the need of educating people to improve attitude and practices toward vitamin D consumption. INTRODUCTION Owing to its hot and dry climate, United Arab Emirates (UAE) is one of the top ranked vitamin D deficient countries. However, little is known about people's awareness surrounding this topic. METHODS A descriptive cross-sectional survey to assess people's knowledge, awareness, and attitude toward vitamin D deficiency was conducted in Al Ain city of UAE. A 25-item validated self-administered questionnaire was used for data collection. Differences among demographic groups were analyzed using chi-square test, and simple binary logistic regressions were used to investigate the association between vitamin D awareness and other significant risk factors. RESULTS More than 90% of the total 346 participants showed awareness toward vitamin D and its deficiency. Doctors were reported as the most common source of information. More than one-third of the participants claimed to have vitamin D deficiency with significantly more females than males. More than 70% of the sample considered sunlight as the best source of vitamin D and avoiding going out in sun as the major risk for vitamin D deficiency. Nearly half (43%) of the participants did not consume milk and only 24% claimed to be using vitamin D supplements. Females were found to be applying sunscreen and consuming vitamin supplements significantly more than their male counterparts. Participants aged 24-35 years, having bachelor degree and those who were tested for vitamin D, were found to score better for awareness questions. CONCLUSIONS Our findings demonstrate a mismatch between knowledge and awareness, and attitude implying the need of educating people to improve their attitude toward consuming vitamin D rich food and supplements.
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Affiliation(s)
- Mudassir Anwar
- School of Pharmacy, University of Otago, PO Box 56, Dunedin, New Zealand.
| | - Faris El-Dahiyat
- College of Pharmacy, Al Ain University, Al Ain, United Arab Emirates
| | - Ammar Jairoun
- Health and Safety Department, Dubai Municipality, Dubai, United Arab Emirates
| | - Ruba Raed
- College of Pharmacy, Al Ain University, Al Ain, United Arab Emirates
| | - Iqra Butt
- College of Pharmacy, Al Ain University, Al Ain, United Arab Emirates
| | - Wasan Abdel-Majid
- College of Pharmacy, Al Ain University, Al Ain, United Arab Emirates
| | - Hind Abdelgadir
- College of Pharmacy, Al Ain University, Al Ain, United Arab Emirates
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Zadka K, Pałkowska-Goździk E, Rosołowska-Huszcz D. The State of Knowledge about Nutrition Sources of Vitamin D, Its Role in the Human Body, and Necessity of Supplementation among Parents in Central Poland. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2018; 15:ijerph15071489. [PMID: 30011906 PMCID: PMC6068672 DOI: 10.3390/ijerph15071489] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 07/09/2018] [Accepted: 07/11/2018] [Indexed: 12/16/2022]
Abstract
The percentage of children with vitamin D deficiency in Poland is alarming. The aim of the study was to assess the knowledge about sources of food and the function of vitamin D, as well as the frequency of its supplementation. A survey was conducted among the parents of children from Central Poland attending primary schools, and a questionnaire containing mainly open-ended questions was used to collect the data. Most mothers knew at least one of the functions of vitamin D in the body but had a low level of knowledge about its dietary sources. Only a small group of respondents supplemented themselves and their children with vitamin D. Statistically significant influences on the level of knowledge about the functions and sources of vitamin D were place of residence (i.e., better knowledge in the countryside) and mothers’ level of education (i.e., the better educated, the greater knowledge). In the case of monthly income level, such impact was observed only in relation to the knowledge of vitamin D functions. Concerning the frequency of supplementation, only maternal level of education had a statistically significant effect (i.e., the higher the education level, the higher the frequency of supplementation). In addition, mothers who were aware of functions of vitamin D and nutritional sources, significantly more frequently supplemented vitamin D.
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Affiliation(s)
- Katarzyna Zadka
- Department of Dietetics, Faculty of Human Nutrition and Consumer Sciences, Warsaw University of Life Sciences WULS-SGGW, 159c Nowoursynowska ST., 02-776 Warsaw, Poland.
| | - Ewelina Pałkowska-Goździk
- Department of Dietetics, Faculty of Human Nutrition and Consumer Sciences, Warsaw University of Life Sciences WULS-SGGW, 159c Nowoursynowska ST., 02-776 Warsaw, Poland.
| | - Danuta Rosołowska-Huszcz
- Department of Dietetics, Faculty of Human Nutrition and Consumer Sciences, Warsaw University of Life Sciences WULS-SGGW, 159c Nowoursynowska ST., 02-776 Warsaw, Poland.
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Older Adults' Beliefs, Knowledge and Preferences for Achieving Healthy Vitamin D Status: A Narrative Review. Geriatrics (Basel) 2018; 3:geriatrics3020026. [PMID: 31011064 PMCID: PMC6319239 DOI: 10.3390/geriatrics3020026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2018] [Revised: 05/18/2018] [Accepted: 05/29/2018] [Indexed: 11/26/2022] Open
Abstract
Autonomy and mobility are, in many cases, key elements underlying positive ageing. Vitamin D (vitD) is essential to maintaining musculoskeletal health and hence mobility; ensuring adequate vitD status is important in positive ageing. However, vitD deficiency persists in ~10–30% of older adults in the Western world. The aim of this review was to explore older adult vitD beliefs, knowledge and preferences, in order to identify means to prevent vitD deficiency respectful of older peoples’ autonomy. Academic search-engines were used to explore the research literature with the keywords: vitamin D; older adults; preferences; knowledge; practices; beliefs. 22 recent studies were identified; although the majority of older people knew of vitD, knowledge about increased fall risk secondary to deficiency was limited and knowledge did not always correlate with adequate intake or status. There was evidence of confusion regarding vitD food sources, sun-exposure and health benefits, and although General Practitioners were trusted information sources they often did not discuss vitD with patients. Preferences varied significantly depending on geographic location, ethnicity, socioeconomic status, education and cultural factors; overall, older people wanted more clear information about vitD. In conclusion, older people have a relatively high awareness of vitD, however, knowledge may be inaccurate and low in those most at risk, and knowledge of deficiency-associated fall risk is under-recognised. Furthermore, studies specifically addressing older adult preferences are lacking; an understanding of preferences, integrated into public health guidelines and implementation strategies, is key not only to decreasing the risk of vitamin D deficiency but also to enabling autonomy in older adults.
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Current Evidence on Vitamin D Deficiency and Metabolic Syndrome in Obese Children: What Does the Evidence from Saudi Arabia Tell Us? CHILDREN-BASEL 2018; 5:children5010011. [PMID: 29342981 PMCID: PMC5789293 DOI: 10.3390/children5010011] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 11/11/2017] [Revised: 12/23/2017] [Accepted: 01/11/2018] [Indexed: 01/12/2023]
Abstract
Obesity and vitamin D deficiency represent major health problems among Saudi children, and have been linked to chronic diseases. Obese children are at risk of developing vitamin D deficiency, which appears to have negative influences on energy homeostasis, impeded bone mineralisation, insulin resistance and inflammation. Evidence supporting the association between vitamin D deficiency of obese children and metabolic syndrome has not specifically been studied in early childhood. The mechanisms through which vitamin D deficiency is associated with metabolic syndrome in obese children needs further elucidation. This commentary aims to (i) summarise current knowledge of the association between vitamin D deficiency and metabolic syndrome in obese children; and (ii) discuss current evidence for the association among Saudi Arabian children.
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Aljefree N, Lee P, Ahmed F. Exploring Knowledge and Attitudes about Vitamin D among Adults in Saudi Arabia: A Qualitative Study. Healthcare (Basel) 2017; 5:healthcare5040076. [PMID: 29035301 PMCID: PMC5746710 DOI: 10.3390/healthcare5040076] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Revised: 10/12/2017] [Accepted: 10/13/2017] [Indexed: 01/21/2023] Open
Abstract
Abstract: Vitamin D deficiency is widespread in Saudi Arabia. The aim of this study was to explore participants' knowledge about vitamin D and attitudes toward sun exposure. The study also aimed to explore the social and cultural factors that might potentially contribute to vitamin D deficiency in Saudi Arabia. Face-to-face interviews were carried out in the cities of Jeddah and Makkah between May and October 2015. The interview questions were semi-structured, and the data was analyzed using thematic analysis. Study participants showed a reasonable level of knowledge in different areas about vitamin D, including the effect of vitamin D deficiency on bone health and exposure to sunlight as the main source of vitamin D. Participants were also knowledgeable about vitamin D supplements as another source of this vitamin. Nevertheless, there was a shortage of knowledge in relation to dietary sources of vitamin D. In respect to attitudes toward sun exposure, some participants had positive attitudes toward sunlight and were willing to expose themselves to sunlight, but it was restricted to the early morning or late afternoon to avoid the heat. These participants who liked exposure to sunlight were largely exposing only their faces and hands to sunlight. Other participants had negative attitudes toward sun exposure and were avoiding sunlight. Moreover, the study participants identified several barriers to sun exposure, including hot climate, living in high-rise buildings, limited public areas allowing outdoor activities, lifestyle issues such as physical inactivity, and some religious concerns such as wearing the hijab. The study results also demonstrate that females were more enthusiastic about taking actions to improve their vitamin D status in comparison with males. Recommendations for health education interventions that increase awareness about vitamin D sources, especially food sources, are made. Also, educational interventions should focus on increasing awareness about the sufficient time of the day and duration for sun exposure to improve vitamin D status and the importance of the intake of vitamin D supplements as an affordable source to improve vitamin D status. Increasing males' awareness of the benefits of vitamin D is important to encourage them to adopt behaviors to improve vitamin D.
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Affiliation(s)
- Najlaa Aljefree
- Public Health, School of Medicine and Menzies Health Institute Queensland, Griffith University, Gold Coast campus, Southport QLD 4222, Australia.
| | - Patricia Lee
- Public Health, School of Medicine and Menzies Health Institute Queensland, Griffith University, Gold Coast campus, Southport QLD 4222, Australia.
- Department of Medical Research, China Medical University Hospital, China Medical University, Taichung City 404, Taiwan.
| | - Faruk Ahmed
- Public Health, School of Medicine and Menzies Health Institute Queensland, Griffith University, Gold Coast campus, Southport QLD 4222, Australia.
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