Estrogen and progesterone plunge: Chances are, you’re craving carbohydrate-rich foods (such as doughnuts, pasta and chips) far more today. The reason is that as estrogen plunges throughout your premenstrual phase, it drags down levels of mood-managing serotonin in the brain—and it just so happens that carbohydrates help replenish this brain chemical, so your body pushes you to consume more of them. The good news? Healthy carbohydrates work just as well as unhealthy carbs to create more serotonin, so consider opting for whole grains, whole fruits, vegetables and legumes when cravings strike. Find out more by downloading the Hormone Horoscope App.