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  • Title: Vitamin D3 prevents cardiovascular diseases by lowering serum total homocysteine concentrations in overweight reproductive women: A randomized, placebo-controlled clinical trial.
    Author: Al-Bayyari N, Al-Zeidaneen S, Hailat R, Hamadneh J.
    Journal: Nutr Res; 2018 Nov; 59():65-71. PubMed ID: 30442234.
    Abstract:
    Obesity and overweight are associated with vitamin D deficiency and hyperhomocysteinemia, all of which are contributing factors for developing cardiovascular disease (CVD). Therefore, we hypothesized that improving serum 25-hydroxyvitamin D [25(OH)D] levels may decrease the body weight and total homocysteine concentrations among overweight reproductive women. To test our hypothesis, a randomized, double-blind placebo-controlled clinical trial, registered under ClinicalTrials.gov Identifier No. NCT03310307, was conducted on 100 overweight reproductive women that were allocated into two groups, namely, the treatment group (n = 50), which received 50 000 IU vitamin D3 per week, and the placebo group (n = 50), and followed for 2 months. Participants' 25(OH)D, homocysteine, parathyroid hormone, calcium, phosphorus, body weight and body mass index (BMI) were measured and compared before and after treatment. The results showed that there was a significant decrease in homocysteine levels after the first and second months of vitamin D3 intervention in the treatment group, and no significant changes were seen in the placebo group throughout the period of follow up. Statistically significant (P ≤ .05) reductions in homocysteine concentration, body weight, BMI, and parathyroid hormone levels were noticed in the treatment group compared to the placebo. Meanwhile, 25(OH)D, calcium and phosphorus levels were statistically significantly (P ≤ .05) increased in the treatment group. In conclusion, vitamin D3 intervention with a treatment dose of 50 000 IU per week for at least 2 months can help decrease BMI and homocysteine levels, which in turn will help prevent or minimize the risk of CVD among overweight women of reproductive age.
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