I have an addiction to fast food. any diet plans?

Glycemic index: One thing you may want not to look in to is the glycemic index diet. Many fast food have a high glycemic index making you get hungry faster. In addition it is highly processed. You should eat your food as close to nature as possible. Just say no to junk food. There is a reason they call it that. You do not want to build your body without proper nutrients.

Dietitian: At 17 years old, this is the time to develop healthy habits, including eating. A consultation with a nutritionist would be a great start. He or she can go over you lifestyle, and recommend gradual changes that you can manage. Obesity is a true epidemic, and it only gets more difficult to manage as you age. Watch the processed carbohydrates, don't drink your calories, and eat smaller portions.