Metabolic Obesity in People with Normal Body Weight (MONW) has been observed for the first time in 1981 Neil Ruderman, describing a case of patients with symptoms indicative of the metabolic syndromes — reduced insulin sensitivity, hypertension, T2DM, and hypertriglyceridemia — despite normal body mass index (BMI). The primary diagnostic criteria were complex and required the use of tests not routinely used in healthy subjects. In later years, the diagnosis was based on the criteria of classic metabolic syndrome (MetS). Currently, new criteria are being searched for that will allow for a quick and accurate diagnosis of the MONW.