In men with type 2 diabetes, testosterone levels are likely to be low. Increasing the male hormone may help patients control the disease by decreasing their insulin resistance.

Low testosterone can affect a man's life in many ways, from reduced sex drive to lack of energy. Now it seems low levels of this hormone may be related to joint disease.

An estimated 43 million Americans use pain medicine on a daily basis. Men taking daily doses of pain medicine may experience an unwanted side effect: low testosterone. 

If you are a man with diabetes, you are twice as likely as other men to suffer from low testosterone. But does it work the other way around? Can low testosterone boost your risk for diabetes?

Earlier research has shown that obesity and low testosterone levels are linked, but could managing testosterone provide a quick fix for obesity?

Erectile dysfunction (ED) can be a side effect of certain medications. New research links the number of medications taken to the severity of ED symptoms.

Male infertility (the inability to reproduce) can be caused by a number of factors, including varicoceles , or swollen veins in the scrotum. Now, it seems varicoceles may lead to problems even more severe than infertility.

Testosterone does more than just protect muscle strength and sexual health. In fact, naturally high levels of testosterone may be beneficial to the heart in older men.