UTIs are a key reason we're often told to wipe from front to back after using the bathroom. That's because the urethra -- the tube that transports urine from the bladder to the outside of the body -- is located close to the anus. Bacteria from the large intestine, such as E. coli, are in the perfect position to escape the anus and invade the urethra.
A vegan diet does not include any animal-derived products, such as meat, fish, milk, eggs, butter or cheese. It does include non-animal products such as vegetables and fruits (including potatoes), grains (bread, rice, oatmeal, etc.), beans (including lentils), nuts etc.
This is the basis of the vegan diet. A vegetarian however, will still consume animal by-products (dairy products, eggs and honey) and semi vegetarians, who have primarily plant based diets, will eat animal by-product foods and on occasion fish, seafood, chicken, and possibly even red meats.