The vegetarian diet involves abstaining from eating meat, fish and poultry. The vegan diet goes further to abstain from all byproducts of animals, eating only plant based foods.
The suggested benefits of adopting a plant based diet are numerous including improved cardiovascular health, reduced inflammation and reduced risk of diabetes. There are a lot of conflicting opinions on the evidence surrounding improved health outputs and a plant based diet. Primarily due to the fact that vegetarians make a conscious decision to adhere to this diet type and are more likely to have other posiive lifestyle habits such as not smoking or low alcohol consumption. The famous Adventist Church study of nearly 61,000 self reported adults also showed a similar decrease in BMI associated with vegetarian diet (2) Additional resource on plant based diets (5)