Vegan Food in Portland There are many reasons but here are the most important ones. Raw foods such as fruits and veggies, contain anti-oxidants which fight free radicals. Free radicals cause premature aging and health problems. Free radicals are found everywhere from pollution, to fried foods, to microwaving food, to radiation, smoke and so on. The anti-oxidants in raw foods, such as fruits and veggies help combat this damage and help you look younger.