What Is Low Testosterone?
Low testosterone (hypogonadism) occurs when a man produces less testosterone than is medically normal. In most men, testosterone levels decrease over time, so lower levels are commonly found in men beginning in their mid-40s.
Key Facts:
  • Up to 13 million men have low testosterone
  • 1 in 3 men over the age of 45 has low testosterone
  • Low testosterone is common in men who are obese and in men with diabetes, high blood pressure, and high cholesterol
  • Low testosterone leads to decreases in sexual desire (libido) and is sometimes associated with low energy and depressed mood
Role of Testosterone
What Is Considered a Low Testosterone Level?
Testosterone levels vary by age. According to many doctors, if your levels are below 300 ng/dL, you have low testosterone. While only a blood test can determine your testosterone level, if you have symptoms of low testosterone, you should ask your doctor if you would benefit from a complete physical exam and if your testosterone levels should be checked.
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