Objectives: To identify the prevalence of metabolic syndrome in Guanajuato, Mexico’s teachers of basic education. Design: Observational, transversal, retrospective study. Setting: Universidad de Guanajuato, Mexico. Participants: Teachers of basic education. Interventions: In 477 teachers that included 208 men and 269 women, medical evaluation and laboratory tests were done including the metabolic syndrome components (glucose, triglycerides and high density cholesterol (HDL-C) analysis), abdominal circumference measurement, blood pressure, and level of physical activity. Main outcome measures: Metabolic syndrome prevalence. Results: The prevalence of metabolic syndrome was 32.2% in men and 26.8% in women teachers. Over 40% of teachers had three risk factors for metabolic syndrome, hypertriglyceridemia the most prevalent. Concerning the level of physical activity, 24% were sedentary peop...