Smoking just two cigarettes a day also constricts blood vessels, impairing circulation and the ability to achieve erection. Chewing tobacco is just as bad. Drink wine in moderation. Most of the penis lies rooted within the abdominal fat, with only a small stub protruding. Excess fat also blocks your arteries and ruins your ability to become erect.
Many men can correct their weight simply by improving their diet.
Low zinc - Zinc is perhaps the most important single nutrient for a man's sexuality. It is crucial for the production of sperm and seminal fluid. Clinical studies show that men who supplement zinc experience a dramatic increase in testosterone levels. Zinc also reduces the pituitary's formation of prolactin, a hormone that stops testosterone production. So, sexual side effects are hardly ever discussed when drugs are prescribed.