A 12-week double-blind randomized clinical trial of vitamin D₃ supplementation on body fat mass in healthy overweight and obese women.

Abstract in brief

• This study was a 12-week clinical trial that tested whether taking vitamin D supplements could reduce body fat in overweight and obese women, finding that vitamin D increased in the blood and was linked to a decrease in body fat mass.
• The results showed that women taking vitamin D had significant increases in serum vitamin D levels and decreases in parathyroid hormone, along with a notable reduction in body fat, but no significant changes in overall weight or waist size.
• A reverse relationship was found between vitamin D levels and body fat, meaning higher vitamin D was associated with less body fat, suggesting vitamin D supplementation might help reduce body fat in overweight and obese women.]