Could there be a worse time in your life to be overweight than when you are in your teens? Possibly t. You and your school or college friends appear to be existing on a similar diet but whilst others stay slim, you are packing on the pounds. What is going on? Is it your genes, is it your hormones, are you eating more than them, is it a hangover from the diet you have grown up on? It could be some or all of these but ascertaining which, is where it gets tricky if you want to be in that place where you can slide carelessly into your skinny jeans with confidence.