The recent discovery of a substance that can block sperm production without changing a mans testosterone levels could mean a new contraceptive male Pill available in the next few years -- one without the emotional and physical side effects experienced by the millions of women taking birth control pills everyday. It works like this: a sustance called adherin blocks immature sperm from bonding with the tissue in the testes which prevents their development into mature, fertilization-capable sperm. In effect, it renders the male infertile -- although once the contraceptives use is discontinued, sperm production returns to normal in as little as three months.
After extensive testing, scientists found the male contraceptive had no adverse side effects on any vital organ, including the heart. For women over 35 taking hormonal contraceptives, they run the risk of heart attack from the formation of blood clots. A survey from the 2000 British Medical Journal found that only 2 percent of women wouldn't trust their partner to take a contraceptive pill.
