The effect of vitamin D supplementation on serum 25OHD in thin and obese women

▸ There was an inverse and independent relationship between serum 25OHD and body fat mass at baseline. ▸ There was no treatment effect of vitamin D or calcitriol on fat mass in randomized trials. ▸ The response to vitamin D treatment varies according to body weight and those with normal or low BMI should use smaller doses of vitamin D.