Introduction: Obesity is a public health problem that tends to increase and compromises the health of people. Objectives: To determine the prevalence of metabolically normal obese (OMN) subjects depending on the presence of cardiovascular risk factors in an adult population showing obesity and morbid obesity. Design: Observational, descriptive and cross-section study. Setting: Department of Endocrinology, Hospital Dos de Mayo, Lima, Peru. Participants: Obese adults without metabolic diseases. Interventions: the study was conducted during the period between April 2009 and May 2010 in all adults consulting for obesity and who declared not having type 2 diabetes mellitus, arterial hypertension or dyslipidemia. Weight, height and waist circumference (WC) were obtained, and body mass index (BMI) was calculated. Those who had 30 kg/m2 or more were included in the study. Insulin, glucose and li...