New research suggests those who have higher levels of vitamin D while on a low-calorie diet may be more successful in losing weight. The study was conducted at the University of Minnesota and measured blood levels of vitamin D in 38 overweight people before and after they followed a diet for 11 weeks that had 750 calories a day fewer than their estimated needs. The researchers found that for each 1 nanogram per mL increase in the active form of the vitamin, they lost almost one-quarter pound more. In addition, those with higher baseline vitamin D levels tended to experience a greater loss of abdominal fat.
“Vitamin D deficiency is associated with obesity, but it is not clear if inadequate vitamin D causes obesity or the other way around,” says Dr Shalamar Sibley. However, she adds the results of the study support the theory that vitamin D supplementation while on a low-calorie diet can contribute to greater weight loss.