There is much controversy around having an official low testosterone level and how it affects your health. Firstly, because everyone is different. Secondly, it does not take into account the patient’s symptoms and how they feel.
According to the American Urological Association, low testosterone is considered under 300 ng/dL and may produce some symptoms that include:
Loss of muscle mass
Trouble concentrating
Weight gain
Low energy
Trouble sleeping
Low sex drive
Erectile dysfunction
Bone loss
Irritability
Depression
Hair loss
But, it is important to remember that many men experience these symptoms at 400 ng/dL, 600 ng/dL or even 900ng/dL. It is all dependent on receptor sensitivity, free testosterone levels, thyroid hormone levels, and a host of other factors.