Because body fat can convert male hormones into estrogen, many people have long assumed that heavy women have an estrogen reserve that helps prevent menopausal hot flashes. But: Recent research contradicts that notion. According to a study of 1,776 women ages 47 to 59, those who had a higher percentage of body fat were more likely to experience hot flashes and night sweats than those with less body fat.
Bottom Line: If you are carrying extra pounds, try losing some weight. Not only will it improve your health, it just might help your hot flashes.