Problem drinking may dampen both a man's sex life and his chances of having children. Recent research has found that men being treated for alcoholism have lower testosterone levels and more sperm abnormalities than non-drinkers did. Some past studies have suggested that heavy drinking can take a toll on men's reproductive health. One recent study found that couples had a higher miscarriage risk if the man had consumed 10 or more drinks a week around the time of conception. Also, it's known that alcoholic men can develop signs of low testosterone, including shrunken testicles and enlarged breasts. Researchers from the Kovai Medical Center and Hospital in Coimbatore, India, studied 66 non-smoking men who had sought treatment for alcoholism, along with 30 non-smokers who had never consumed alcohol. On average, alcoholic men had a significantly lower sperm count, more abnormal sperm, as well as lower testosterone levels and changes in other reproductive hormones. They also had a far higher rate of erectile dysfunction (ED) - 71 percent, versus 7 percent of abstainers. Men are advised to refrain from chronic alcohol consumption if they want to procreate and lead a normal sex life. On the other hand, it's unlikely that light drinking would have any significant effect on men's fertility. The above findings reflect direct damage to the testicles caused by excessive alcohol. Alcohol enters the testicles directly and can both cut testosterone production and harm the quality of semen. But the potential harm is not limited to men. Other studies have found heavy drinking to impair women's reproductive health as well.
Fertility & Sterility,
October 2005