Effect of vitamin D supplementation alone or with calcium on adiposity measures: a systematic review and meta-analysis of randomized controlled trials
| Autor: | Obiageli Obi, Lu Wang, Howard D. Sesso, Jacqueline S. Danik, Xi Zhang, Joshua R. Lewis, Paulette D. Chandler, Richard L. Prince, M.V. Moorthy, Yiqing Song, Meryl S. LeBoff, JoAnn E. Manson |
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| Rok vydání: | 2015 |
| Předmět: |
medicine.medical_specialty
Medicine (miscellaneous) chemistry.chemical_element Context (language use) Calcium Placebo law.invention Body Mass Index Randomized controlled trial law Internal medicine medicine Vitamin D and neurology Humans Obesity Vitamin D Adiposity Randomized Controlled Trials as Topic Nutrition and Dietetics business.industry Body Weight Vitamins Lead Article Confidence interval Endocrinology chemistry Meta-analysis Dietary Supplements business Body mass index |
| Zdroj: | Nutrition reviews. 73(9) |
| ISSN: | 1753-4887 |
| Popis: | Context: The independent or interactive effects of vitamin D and calcium on adiposity remain inconclusive. Objective: The objective of this systematic review and meta-analysis was to assess whether vitamin D and calcium supplements cause changes in adiposity. Data Sources: MEDLINE, Embase, and the Cochrane Central Register of Controlled Trials databases were searched for literature published from 1966 to March 2014. Study Selection: A systematic search was conducted for randomized clinical trials with ≥50 participants aged ≥18 years at baseline who had received at least 12 weeks of treatment. Among the inclusion criteria were supplementation with vitamin D with or without calcium and measurement of adiposity (weight, body mass index [BMI], and/or fat mass). Data Extraction: The primary endpoints assessed were changes in weight, BMI, or fat mass. Data Synthesis: Of 953 trials identified, 26 randomized clinical trials (n = 12, vitamin D alone; n = 10, vitamin D plus calcium versus calcium control; n = 4, vitamin D plus calcium versus placebo) with a total of 42 430 participants (median duration, 12 months) met the inclusion criteria. When compared with placebo, vitamin D supplementation had no significant effect on BMI (weighted mean difference [WMD], −0.06 kg/m2; 95% confidence interval [95%CI], −0.14 to 0.03), weight (WMD, −0.05 kg; 95%CI, −0.32 to 0.23), or fat mass (WMD, −0.43 kg; 95%CI, −1.69 to 0.84). Likewise, no significant reduction in BMI (WMD, 0.02 kg/m2; 95%CI, −0.11 to 0.14), weight (WMD, 0.12 kg; 95%CI, −0.24 to 0.49), or fat mass (WMD, 0.12 kg; 95%CI, −0.22 to 0.45) was observed in participants who received vitamin D plus calcium compared with those who received calcium control. Conclusions: Supplementation with vitamin D showed no effect on adiposity measures in adults. |
| Databáze: | OpenAIRE |
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