Researchers set out to find whether foods rich in carotenoids, a pigment shown to increase skin tone attractiveness, would also give body odor a boost. They studied male sweat samples with females sniff-testing for hedonic, intensity and qualitative attributes. The results, as published in Evolution and Human Behavior say: men who ate a variation of vegetables and fruits, as well as reasonable amounts of fat, meats, eggs and tofu, smelled better than those who ate a lot of carbs. The low-carb diets produced a floral, fruity, sweet and medicinal" sweat, while higher carbohydrate intake resulted in stronger, less pleasant body odor.