[Obesity, central body fat distribution and ischemic cardiopathy in the Mexican population]. / Obesidad, distribución central de la grasa corporal y cardiopatía isquémica en población mexicana.

An age- and sex-matched case-control study was conducted to evaluate the relation of obesity and body fat distribution with the occurrence of coronary heart disease in mexicans. Obesity was measured in 150 couples by bioelectrical impedance with an EZ comp 1000 computer (body composition), and by estimating the body mass index. Skinfold anthropometry was used to assess central fat distribution. Two fat distribution indices were calculated, a ratio of central to peripheral skinfolds (central pattern) and a ratio of upper to lower body skinfolds (android pattern). Those subjects who had a percentage of body fat, by bioelectrical impedance, greater than 20%, had a 20 fold higher risk to develop acute myocardial infarction. The risk of coronary heart disease was also high in those with a central fat distribution and even higher in those with an android pattern. Both obesity and abdominal fat distribution are closely related to coronary heart disease. There is a need to promote life-styles changes and to reduce obesity, to prevent the occurrence of coronary heart disease in Mexico.

[Risk factors for ischemic heart disease in Mexico: a case control study]. / Factores de riesgo para cardiopatía isquémica en México: un estudio de casos clínicos y testigos.

A case control study was developed in order to assess the strength of the association of modifiable risk factors and the occurrence of coronary heart disease in Mexicans. A total of 284 incident cases of acute myocardial infarction and 284 age and sex matched hospitalized controls were included in the study. Information was obtained in all subjects regarding socio-demographic variables, history of diabetes, hypertension, smoking, obesity and serum cholesterol. A conditional logistic regression model, showed that diabetes mellitus, hypertension, smoking, hypercholesterolemia and obesity, explained the occurrence of coronary heart disease in the studied population. The risk of an acute myocardial infarction heavily increases in the extreme levels of exposure; and this risk is six fold higher in those who daily smoke more than 20 cigarettes, and it is eight fold higher in those subjects with a serum cholesterol greater than 240 mg/dl. Due to the increase in the occurrence of coronary heart disease in Mexico, and the strength of the association observed with these modifiable risk factors, a public health program to decrease its prevalence, is justified.