Sex hormone levels in young Indian patients with myocardial infarction.

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Abstract
The finding of abnormal levels of sex hormones in men with coronary artery disease has led to the hypothesis that alterations in sex hormones may represent an important risk factor for myocardial infarction. In this study, the sex hormone profile of 28 young men (aged less than 40 years) with myocardial infarction was compared with 28 age- and weight-matched normal men. Although the mean total serum estradiol levels and the free estradiol index of the patients and controls were similar, the mean serum total testosterone level and the free testosterone index were significantly lowered in the patients with myocardial infarction (p less than 0.01). The ratio of serum estradiol to testosterone was significantly increased in the patients (p = 0.0005) and correlated with serum cholesterol, triglycerides, and plasma glucose. A significant inverse correlation was also demonstrated between total testosterone and serum cholesterol and triglycerides. Hence, the results of this study support the hypothesis that low plasma testosterone and an increased estradiol-to-testosterone ratio may be important risk factors for myocardial infarction.