Yes, you can be really healthy as a vegan! According to the Academy of Nutrition and Dietetics, appropriately planned vegetarian, including vegan, diets are healthful, nutritionally adequate, and may provide health benefits for the prevention and treatment of certain diseases. You can meet all of your nutritional requirements on a fully plant-based diet when supplementing with vitamin B12. More on that below! Vegans usually get plenty of fiber, plant-based protein, healthy fats, important minerals, and vitamins from their diet.