According to the study, published earlier this month, a low-fat, vegan diet, specifically one that includes ½ cup of cooked soybeans daily, helped postmenopausal women decrease the number of hot flashes they reported by a whopping 79%. But not only that: The numbers showed that the frequency of moderate to severe hot flashes decreased by 84%, so the hot flashes the women were experiencing were less likely to be, well, brutal.