Hypogonadism is a condition where your body does not produce enough testosterone. Testosterone is the primary male sex hormone that supports muscle mass, bone density, energy levels, mood, and sexual function. When levels drop too low, usually below 300 ng/dL, you may experience a range of symptoms that affect your daily life and long-term health.
There are two main types of hypogonadism. Primary hypogonadism means your testicles are not producing enough testosterone even when your brain signals them correctly. Secondary hypogonadism means the problem starts in your brain, where the hypothalamus or pituitary gland fails to send proper signals to your testicles. Both types result in low testosterone, but the underlying cause differs.
Hypogonadism can develop at any age, though it becomes more common as men get older. Some men are born with conditions that lead to low testosterone. Others develop it later due to injury, illness, medications, or lifestyle factors. The good news is that blood testing can identify low testosterone levels, and treatment options can help restore hormonal balance and improve quality of life.