Currently i weight 81kg and am only 16 i was wondering if you could help give me some advice on how to lose this?

Weight loss: Losing weight depends on a simple math formula of what you take in for calories and what you expend (basal metabolism and exercise/activity). The expenditure has to be more than the intake. Beyond this you should watch your choice of foods. Avoid fried foods, sweets, cakes, cookies, alcohol, sodas. Choose lean proteins and vegetables primarily as your source of caloric intake.

Agree with Dr. A: It is good that you realize that you have an issue. In addition to the suggestions by Dr. A, you may consider joining a support group like Weight Watchers. Wish you good health and a Happy New Year!