Vitamin D

Vitamin D, often referred to as the “sunshine vitamin,” is a fat-soluble nutrient essential for bone health, immune function, and metabolic processes. In a 12-week randomized controlled trial, obese individuals with vitamin D deficiency who received vitamin D supplementation alongside a weight-loss diet experienced significant reductions in body weight, fat mass, and inflammatory markers compared to those on a placebo . Additional studies have observed that vitamin D supplementation can modestly improve insulin sensitivity and lower fasting blood glucose levels, suggesting potential benefits for metabolic health . Furthermore, observational research indicates an inverse relationship between serum vitamin D levels and the prevalence of metabolic syndrome, highlighting its role in metabolic regulation. (23)