A vegan diet eschews all animal products, including dairy and eggs, and relies on plant foods for nourishment. While it is feasible to get all of the nutrients you need by eating a plant-only diet, it takes careful planning. In some cases, a scarcity of proper nutrition can result in excessive hair loss. It’s completely normal to lose 100 to 200 hairs per day, but when you discover you’re losing a lot more, consult a health care provider to verify you don’t have an underlying health problem. You must also examine your diet to make sure you are getting enough calories, vitamins, minerals and protein to maintain your hair at its healthiest.