Exercise, healthy eating linked to early menopause  Fitness
fanatics, beware: A new Japanese study suggests that women who
exercise a lot and eat a heart-smart diet high in so-called
"good fats" may reach menopause more quickly, putting them at
risk for a host of health problems.  The researchers tracked
3,115 women for 10 years, collecting data on their exercise and
eating habits. They found that the women who spent eight to 10
hours a week exercising were 17 percent more likely to start
menopause early, compared to women in the study who weren't
exercising. Those who ate plenty of polyunsaturated fats (found
in fish and vegetable oils) were 15 percent more likely to hit
menopause early, compared to women who consumed less of those
oils. "Total fat, other types of fat, dietary fiber, soy
isoflavones, and alcohol were not associated with the onset of
menopause," Dr. Chisato Nagata of Gifu University and his
colleagues wrote in the study.  There are pros and cons to early
menopause, doctors say. On the one han