Although it might be difficult for a few days, you may want to skip out on your Diet Coke or morning cup of coffee. During your period, caffeine intake can lead to heightened cramping and anxiety because of caffeines ability to make the body produce more stress hormones.
Blame it on the hormones. A 2016 study suggests that changes in levels of hormones estrogen and progesterone cause cravings for high-carb and sweet foods before your period. Your hormones may not be the only driving force behind your desire to eat all the goodies in your pantry before Flo comes to town, though.
Caffeine can make cramps worse, so steer clear of coffee before and during your period. Make sure you're not sneaking it in with soda, energy drinks, chocolate, or tea. If you need a morning or midday pick-me-up, try a small smoothie packed with veggies instead.
For example, the researchers noted that eating foods (such as soda) that quickly raise a person's blood sugar levels result in an increase in levels of the hormone insulin. This may, in turn, affect levels of sex hormones, which would influence menstruation.