Hello! Thank you for writing. I do understand your concern. Via Ananas is a pineapple based food supplement formulated to assist obese people in losing weight. We all certainly know that most fruits provide the body with a number of vitamins and minerals essential to its proper functions. That said, this is the first time we bump into a weight loss supplement having pineapple as it s main ingredient. Via Ananas enhances the fat burning process with the help of an enzyme called Bromelain which stimulates digestion and reduces the accumulation of water and fat. Via Ananas Advantages Made of natural ingredients Protects the body from inflammation Does not contain any stimulant Rich in minerals and vitamins Via Ananas Disadvantages There is no conclusive evidence it really works The composition of the ingredients is not provided I think that the best way of losing weight in your age is eating healthy and exercise. You need a lot of different foods in your diet in order to promote growth. You should not starve yourself and prevent yourself from eating. You are growing up and you need a lot of energy vitamins and minerals during this process. During exercise it is released growth hormone which is very important for growth. You need to eat fruits, vegetables, whole grain ingredients as they get slow hydrolised by the intestine and supporting your blood in a continues way with glucose and your feelings of craving carbs decreases. Eat proteins: milk, eggs, cottage cheese, fish and chicken. Fish contains healthy fats like omega 3 which is an esential fatty acid that we need to take because our body doesn t produce it. It has a lot of beneficial effects. Eat nuts and dry fruits. Cut out processed food, fried pattatoes, fast foods. But portion is very important. This are general tips on losing weight. Better is to get a personalised diet and taking measurements by a specific machine in order to see your metabolic rate, the muscle and fat mass in percentage, by a nutritionist. Thank you. Best regards.