Naturally occurring high testosterone can protect the heart of older men.

Findings published in the Journal of the American College of Cardiology showed that of 2,400 Swedish men in their 70s and 80s, those with the highest testosterone levels were less likely to suffer a heart attack or stroke over the next several years than men with the lowest levels

Low testosterone may be a marker of other health conditions that put men at higher risk of cardiovascular disease.

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