IT'S A TURN-OFF | Smoking can stub out your sex life, say scientists in Kentucky. Compared with nonsmoking men, those who light up have sex less often and don't enjoy it as much.

Panayiotis Zavos of the Andrology Institute of America in Lexington, Kentucky, and his colleagues asked couples undergoing fertility treatment to fill in a questionnaire asking about how often they had sex, how satisfying it was and the number of cigarettes they smoked per day.

Nonsmoking men reported having sex about 12 times a month and rated it about nine on a scale of one to ten. But men who smoked more than 30 cigarettes a day said they had sex only six times a month and gave it lower marks--about five out of ten. "Tobacco toxins are stored in the testes," says Zavos. The male hormone testosterone may be affected, he told a fertility meeting in Toronto last week.