Why TVG The Plus Side of Being Vegan Aside from the moral implications, disease prevention and correction is a huge reason to turn people to the vegan lifestyle. Eating a healthy vegan diet has shown to prevent numerous diseases. One can potentially avoid and correct damage done to one’s body just by switching to a healthy, balanced vegan diet. A British study indicates that a vegan diet reduces the risk of heart disease and Type 2 diabetes. Vegan diets also go far in preventing heart attacks and strokes.