Low T can be caused by a signaling problem that occurs between the brain and the testicles that causes the production of testosterone to drop below normal. The brain may also signal the testicles to cut testosterone production if it feels the body has too much testosterone. Low T also can occur when your testicles can’t make normal levels of testosterone.
It is estimated that Low T could potentially affect about 1.7 million men in Canada over the age of 45.1, 2 Even though it’s natural for men to lose testosterone as they age, the medical condition hypogonadism (hi-po-na-dizm) or testosterone deficiency syndrome, also known as Low T, is not a natural part of aging. Typically, there is no cure for Low T. It is a medical condition that may require ongoing treatment.
Low T can be diagnosed by your doctor with a blood test and treated with testosterone replacement therapy (TRT).
Testosterone is a hormone made by the body. Most of the testosterone in a man’s body is produced in the testicles. In adult men, testosterone deficiencies may cause:
Just like your cholesterol or blood pressure, there is a numerical range of testosterone levels (also known as T levels) that are considered normal. The brain and the testicles work together to keep testosterone in this range. When levels of testosterone are below normal, the brain signals the testicles to make more. When testosterone levels reach a normal level, the brain signals the testicles to make less. Normal levels of testosterone change as you age. Serum testosterone levels can decrease 1-2% per year after age 40.6