Submitted by admin on Tue, 2005-10-25 08:00. ::
Doctors have developed a no-scalpel vasectomy done with a clamp. It works with a small puncture into the scrotum, and it's regarded as quicker and less painful, with less swelling and a faster recovery time.
You still have to wait several months after a vasectomy to make sure there are no viable sperm. After that, a vasectomy is about 99.8 percent effective in preventing pregnancy.
It can be at times, but not always. It should be considered a permanent form of contraception and sterility. If a man has any doubt about wanting more children down the road, he either ought not to have the procedure or look into sperm banking.
A combination hormone therapy using testosterone (the male sex hormone) and progestin (a synthetic form of the female sex hormone progesterone) has been shown to prevent sperm production. Also, a drug derived from cottonseed oil was tested in China and found to be 98.5 percent effective in preventing sperm production. It's called gossypol, and it had very few side effects. Fertility pretty much returned after the gossypol was stopped.
In recent studies, it has been about 100 percent effective, but researchers don't have the ideal delivery system yet. In one study, they gave men progestin injections every three months and testosterone through a surgical implant every four months.
Testosterone is a steroid, with the potential of causing side effects such as acne and weight gain. It also causes a reduction in HDL, the "good guy" cholesterol. That's a big concern because it raises the risk of heart attack.
Men in the studies have expressed satisfaction with the hormone-based contraception. But the real question is whether women would trust their partners to use contraception reliably. A lot of them said they wouldn't.
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