By Dr Cory Couillard

Testosterone plays an important role in keeping your mind sharp and your body healthy—from the heart to muscles and bones to erectile dysfunction (ED). If you’re middle-aged, your body’s testosterone levels have already begun to decline.

Testosterone is a hormone that is produced primarily in the testicles. It is essential in the development of masculine characteristics, muscle strength, fat distribution and sex drive. Testosterone peaks during adolescence and as

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