To feel better, eat more fruit, veggies, and fish. Women who eat a plant-based diet are less likely to get endometriosis. Also good: healthy fats like omega-3 fatty acids in salmon, tuna, and walnuts. Cut back on beef, pork, and other red meat. Their saturated fat can rev up your body’s disease-fighting response and trigger inflammation. It also raises estrogen levels, which helps endometriosis grow.