Not necessarily. As men age, they may experience many signs and symptoms. Some changes that low testosterone levels might cause include:
This may include reduced sexual desire, fewer spontaneous erections such as during sleep, and infertility.
You might experience various physical changes, including increased body fat, reduced muscle bulk and strength, and decreased bone density. You might also experience swollen or tender breasts (gynecomastia) and body hair loss. You might also feel less energetic than you used to.
Low testosterone might contribute to a decrease in motivation or self-confidence. You might feel sad or depressed, have trouble concentrating or remembering things.
Some of these symptoms and signs can also be caused by other factors, including medication side effects, obstructive sleep apnea, thyroid problems, diabetes, and depression. These conditions may also cause low testosterone levels, so treating them might raise testosterone levels.
A blood test is used to diagnose low testosterone levels.