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Teen weight loss is different from mature people weight loss. I can tell you this from my experience, I was also fat when I was a teen, and I can give you some free advice about weight loss for teens. Weight loss depends on age, metabolism, habits of eating and lifestyle and many other things.
Free advice for teen weight loss:
Being a teen is a trump for weight loss. Your body burns calories much easier, and quicker, if you have an active lifestyle like doing exercises, walking, jogging or practicing a sport, these exercises and sports will boost up your metabolism and burn calories even faster.
Free weight loss for teens - you can start with a fad diet to have a good and impetuous start but not more than a week, because you'll hurt your body. After finishing the fad diet you will have to continue with a healthy diet to lose weight slowly and in the healthiest recommended way.
Have you ever heard about the stone-age diet? Imagine during that time, human beings are eating only natural food mostly vegetables, fruits and fresh meat. The human body is a very complex machine made for active lifestyle and we can't change this. If you are lazy and you eat more your body will surely gain weight even if you are a teen!
When you are on a diet, you should have an active lifestyle and do exercises and sports, as many as possible. This is important because being a teen is still in a growing mode and your body needs all the food that it can get basically it needs food to grow hence a big appetite that is why a teens body needs exercise, what ever form of exercise it may be the body badly needs it. Sitting in your couch and playing computer games or watching TV and being idle all day will definitely ensure weight gain.
Being a teen you are blessed with so much energy. Put that energy into good use like exercising and doing sports. For a teen I would recommend playing sports or do physical activities that you like in this way you are having fun and at the same time you are exercising your body, an exercise that your body badly needs to burn unwanted or excess fats and calories in order to be healthy.
Therefore it is imperative for teens to have an active lifestyle and a healthy diet to achieve maximum performance and productivity. This means that you will be able to do everything that you want without suffering from early fatigue and weakness. Lastly an active lifestyle can mold your body into the statuesque form that you've always wanted.