What can lead to testosterone deficiency in old age?

Following.

Testosterone is necessary for a man not only to maintain muscle strength and sexual activity, but also to maintain health, scientists say. Researchers from the United States came to an alarming conclusion: the lack of the main male hormone provokes many chronic diseases.

Well..too much masturbation...

I heard that it could be due to malnutrition

Testosterone deficiency is mainly associated with inadequate physical activity, obesity, or an unhealthy diet. If the level of the HGH hormone becomes low, unpleasant symptoms can occur. Such as weight gain, fatigue, loss of muscle mass and bone, impaired function, decreased sex drive and an increased risk of various diseases. I found out all this when I contacted hgh therapy clinic where I was prescribed the right treatment. Now I feel 15 years younger.