15 year old girl How can I lose a a lot of weight? please help Im desperate!?

By the sounds of it, you don't even need to lose weight -also, weighing yourself probably isn't the best method of measurement anyway - you should try using a measuring tape so you can count cm's lost/gained. Scales tell you fat + muscle gained, so its unreliable in a sense that it makes you think you're gaining fat, when in fact, you could be losing fat, but gaining muscle.

Im american, so I have no idea what pounds that is, but a great american workout is sweatn to the oldies. I know its embarrasing, but man does it work! They had it on 2 movies I watched lol.

I have a muscle disorter and this was by far the easiest work out ive ever done. Give it a try :) btw what country you from?