Vitamin D (VitD) is a steroid derivative. Activated vitamin D exerts various biological functions by binding to vitamin D receptor (VDR). In addition to being associated with bone growth and development, it has an important regulatory effect on the functions of various tissues and organs such as fat, liver and kidney. Obesityinduced metabolic inflammation is closely related to diseases such as cardiovascular diseases, diabetes, and metabolic syndrome. However, it is not clear whether vitamin D is directly related to the metabolic inflammation caused by obesity. Therefore, this article reviews ...