You've heard of menopause for women, but male menopause? Age-related hormones affect men also. Marcie Fraser reports.

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Hormone changes are a normal part of aging for both men and women. The biggest difference, it's more gradual in men.

Urologist Dr. Andy McCollough said, "Every year after the age 40, a man will lose about one and a half percent of his testosterone level."

According to Dr. McCollough, Director of Men's Health, every year after age 40 a man's testosterone level will drop, which is a natural part of aging, but because people are living longer, if you want to stay sexually active, it can be challenging. Doctors call it andropause. After the age of 40, men's reproductive system begins to go through changes, the number of cells that produce testosterone decrease. So by the time a man hits 60, his testosterone will often fall well below the level which helps him maintain normal sexual function.

Dr. McCollough said, "The most common symptom a man will present with is, I just don't have any drive, I don't have any energy to do anything, I just don't care, and my wife is complaining about that."

Smoking, drinking and diabetes can also contribute to the loss of testosterone where depression can also become apparent.

While a low level of testosterone on can affect a man's sexual drive as well as his emotional being, it can also have an impact on his body.

Dr. McCollough said, "You start affecting bone mineral density and as men age and as they develop hip fractures and bone fractures, that can lead to major health issues."

A simple blood test is needed to check for low testosterone and medication is used to boost levels if needed. Some experts warn there may a relationship between taking testosterone and developing prostate cancer.

Dr. McCollough said, "The link between prostate cancer and hormone levels is an imperfect one at best. There is not clear association with prostate and testosterone level."