Testosterone

Testosterone is the principal male sex hormone. It is primarily secreted in the testes of males and the ovaries of females, although small amounts are secreted by the adrenal glands. In both males and females, it plays key roles in health and well-being. Examples include enhanced libido, energy, immune function, and protection against osteoporosis.

Testosterone and diabetes
In a 2007 study, it was found that diabetic men over 30 are at high risk for low levels of testosterone, a condition known as hypogonadism.

The study of 355 men with type 2 diabetes found that 17 percent had "overt hypogonadism", and a further 25 percent had "borderline hypogonadism".

There was a strong link between low testosterone levels and waist circumference, suggesting that obesity is associated with low testosterone levels.

External resources

 * Reuters: Low testosterone common in type 2 diabetic men
 * Long-Term Pharmacokinetics of Transdermal Testosterone Gel in Hypogonadal Men
 * Long-Term Testosterone Gel (AndroGel) Treatment Maintains Beneficial Effects on Sexual Function and Mood, Lean and Fat Mass, and Bone Mineral Density in Hypogonadal Men