When becoming vegan, you limit yourself to nothing but vegetables, fruits, and lower selection of drinks. Eating veggies is healthy, but meat is the best source of nutrition. By avoiding meat you allow your body to get weaker. If you do not eat enough meat, you will be malnourished and sent to the hospital and which there they will fluid feed you the proper nutrients you need. Being a vegan is health damaging and life threatening at some points.
