Coffee and dairy proteins are felt to be responsible for about 90 percent of food-induced pruritus ani, while cola, chocolate, tea, beer, tomatoes and vitamin C supplements are responsible for the remaining ten percent. A three-week trial eliminating the suspected allergens may relieve symptoms. Still another study shows that the practice of admitting a mother of twins to the hospital several weeks prior to delivery does not benefit the infants. Previous studies have shown a relationship between coffee intake and pancreatic cancer, but apparently smoking elevates the risk even more. The diet, combined with exercise and therapy, proved helpful to 70 percent of the patients in their study.
Some men suffer pain for many years following the procedure.
This Canadian study points out that sperm production continues after vasectomy and the sperm may produce pressure which causes epididymis or ductus deferens rupture. The sperm may escape the normal tract and induce the formation of granulomas or sperm antibodies. Other complications of vasectomy include hematoma of the scrotum, epididymitis, and wound infection. Vasectomy may reduce prostate function. Monkeys have been shown to develop more extensive atherosclerotic changes after vasectomy.