What is the best diet for a 19 yr old 250 lbs?

Depends: The best one is a healthy low calorie diet you can stay on. Choose a diet that appeals to you for the long run. There is very poor evidence that people lose more weight on one type of diet over another, at least in the long run. Vegetables are excellent to include. Writing down what you eat has great evidence for weight loss. Try www.Sparkpeople.Com. A support group helps changes stick.

Less food: Caloric restriction and increase in physical activity are in order. No diet per se will help you lose weight unless you reduce the caloric intake. Try to get a diet rich in fresh vegetables, fruits and whole grains, low in fats and alcohol. Increase physical activity gradually and progressively to get healthy and facilitate weight loss.