DS 10 yrs has always had a good appetite but recently he never seems to be full. He's always looking for the next meal or snack even when he's just eaten. I know he's at an age where this is fairly common but the trouble is he's starting to get quite chunky (wears aged 12 clothes for width rather than length) and things came to a head this morning when it transpired that he'd got through a box of cereal (multigrain shapes) that was supposed to be 11 servings single handedly in 3 days as well as having toast laden with jam for breakfast. DH and I have said that breakfast will need to be more closely supervised and I've suggested we have porridge which is more filling. We're just worried because neither of us are slim and he doesn't do huge amounts of exercise - active at playtime, a couple of after school clubs, walks the dog (for about 5 minutes). I don't want to give him any issues with weight or food so have tried taking him for more exercise (swimming as a family, cycling whenever I can persuade him away from the TV etc) and restricting sweets, cakes, crisps etc (we generally don't keep these in the house) but he'll get really cross with me and cry that he's hungry even when he's just had what I think of as an adult size portion. Things aren't helped by MIL who shows her love through feeding (a whole other thread and we've had words about it several times). Today after the cereal debacle he asked if I was calling him fat. I said that he's not at the moment but if he carries on eating like this that would be the risk and it's no fun going through school (and life) overweight as both DH and I know. I keep hoping he's going to have a huge growth spurt and suddenly stretch but doesn't seem to be happening. Any advice on what else we can do without making too big an issue of it? or is this normal?