Why does my appetite increase right before my period?

Hormones and food: There are normally major changes in your female hormone balance that regularly occur in your menstrual cycle. These changes at the end of your cycle bring on your menstrual period. Changes in hormones can effect your appetite, and symptoms can occur each month at the same time in your menstrual cycle.

Progesterone: Progesterone is a powerful appetite stimulant, which peaks just before your menstrual bleed. Your hormonal cycle anticipates pregnancy, therefore the potential to need to eat for two.