Testosterone therapy has been viewed as a way to counter the effects of aging where bone calcium declines, muscle mass decreases, body fat increases and red blood cell counts decline. But there is no proof that testosterone therapy will reverse these changes and its safety for older men remains controversial. A study found that men who took daily testosterone had a higher incidence of cardiovascular events. Its role in prostate disease, both benign prostatic hyperplasia (BPH) and prostate cancer is unresolved.
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