Your Health: Jul. 9, 2001

GOOD NEWS

START SLOW Warming up before exercise not only averts muscle injury but may also help prevent migraines. After 30 sec. of sudden, intense exercise, nitric oxide production--at high levels believed to trigger the crushing headaches--increased significantly in women prone to migraines, and more than half of them went on to develop one. Experts say warm-ups could help sufferers get back to the gym.

SAFER SEX Do condoms protect against genital herpes? Yes, better than doctors once thought. A new study shows that condoms reduce the risk of transmission 90% in women whose partner is infected but has no symptoms....

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