10 Facts About Low Testosterone
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Low testosterone can impact many aspects of a man's life.

Testosterone is a male hormone (or androgen) produced in the testicles and regulated by the hypothalamic-pituitary unit in the brain. During puberty, testosterone helps develop a man's muscles and the size of his genitals. It also deepens his voice. In adulthood, this hormone helps maintain a male's muscles and bones as well as his interest in sex. A low testosterone level (or hypogonadism) can impact many aspects of a man's life.

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Medically Reviewed By: William C. Lloyd III, MD, FACS | Last Review Date:

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Medical References

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