Meat, beans, fish, leafy green vegetables and seeds. Most of these foods are rich in iron, protein or both, which is especially important if you have endometriosis or bleed heavily. And some (like fish, seeds and leafy greens) have anti-inflammatory properties, which can help mitigate cramps by encouraging healthy blood flow. Another tip: eat plenty of bell peppers, tomatoes, broccoli, kiwi, citrus and other food sources that are high in vitamin C. “Vitamin C helps the body absorb iron from beans, whole grains and fortified cereals,” says Ward.