My family eats everything in the house?

Ask your mom if she'll let you go shopping with her. While you're there, ask her for some snacks for you alone, that you can keep hidden in your room. Or, if you are old enough, get a part time job, either at a store or babysitting, and buy your own food and keep it hidden. Thats good that you have enough self control to NOT be like your brothers, who seem to do nothing but eat. You will be the healthy one, while they sit on their behinds eating all the time......