People may be reluctant to give up fast food, steaks, burgers, and ice cream shakes for veggies and fruit. but consider the health issues that america's bad eating habits have caused: heart disease, obesity, and type 2 diabetes. veganism involves not eating meat, dairy, or any food that contains products from animals. it not only prevents diseases, but research also shows that following a vegan diet can actually reverse many of the symptoms and conditions brought on by poor eating habits. studies have shown that people in the early stages of breast cancer, prostate cancer, or heart disease have successfully reversed the progression of their disease when switching to a vegan diet. people who follow a vegan diet tend to have lower rates of cancer, diabetes, hypertension, heart disease, arthritis, and osteoporosis.