It is not only the age that becomes a factor which causes the low testosterone in men. Weight gain is also one of the factors. As we grow older, sometimes it is unavoidable since we tend to put on weight. When we acquire these fat cells in our body, they produce something called Aromatase. Now Aromatase is bad for men for it converts their Testosterone into Estrogen, which is the hormone good for women. What Estrogen does is refraining and controlling the growth and production of Testosterone. When this is not taken notice of, it can become a cycle as men will gain more weight. Each pounded added will cause a decrease on the level of the male hormones in their body. It is what causing them to have low testosterone besides of the aging process we all have to go through. There are ways which men unintentionally ingest and take Estrogen without their knowledge. When they start to have a diet of meat and poultry, their testosterone would certainly reduce significantly because the hormones used when farming of meat act like Estrogen. Drinking of alcohol is not only bad for the health, but can also lessen the production of testosterone for men. Beer is the strongest inhibitor. If they push their selves too much and put in extended periods of stress, it can cause them to experience lethargic and sudden weight gain. For much worse cases, they can have memory loss and diminished mental functions. This would also cause them to be depressed over the condition of their health, which is why Testosterone treatment is suggested.