Chemerin (CHEM) is a protein synthesized primarily by adiposse tissue and liver. CHEM acts both paracrine and autocrine, stimulating adipocytes maturation and differentiation. In addition to its hormonal function, CHEM acts as a chemoattractant for immune cells, regulating the innate and acquired inflammatory response. Its pleiotropic properties also affect the carbohydrates and lipids metabolism. High concentrations of CHEM are observed in people with obesity, type 2 diabetes, hypertension, and hyperlipidemia – components of the metabolic syndrome. Therefore CHEM also may be considered as an early predictive marker for diagnosing metabolic syndrome, also in adolescence and childhood.