Q. I'm 68 and thinking of taking testosterone. Will it help me to feel younger?
There is some controversy about whether testosterone therapy should be used in men who have naturally lower testosterone levels because of aging. It remains unclear whether restoring earlier testosterone levels benefits older men.
For example, studies found that healthy men who took testosterone medications got bigger muscles, but in most studies the men weren't stronger. And, if you suffer from erectile dysfunction, taking testosterone may not relieve your condition.