The effect of different amounts of vitamin D supplementation on serum calcidiol anthropometric status and body composition in overweight or obese nursing women: a study protocol for a randomized placebo-controlled clinical trial

摘要

BackgroundThe optimal vitamin D intake for nursing mothers with overweight or obesity has not been defined. Vitamin D concentrations are associated with body composition indices, particularly body fat mass. Few studies have investigated the relationship between hypovitaminosis D, obesity, anthropometric status, and body composition in nursing women. Thus, the present study aims to investigate whether vitamin D supplementation during lactation will improve vitamin D status, reduce body fat mass, and improve body composition.