I used to be very thin as a child, and my dad's drunk friends used to say I was anorexic and will turn out gay because of it, because I'm not bulky like a man. I was convinced for years to complete every plate of food because it's a sin to waste it. I used to gag on the food when I was full, and my mother would get mad at me. Eventually I must have got used to being able to eat more than my body would want, because the gagging stopped and I was able to eat an entire plate of food. The plates were adult size portions, the size my mom and dad were eating. I doubt a 7 year old boy would eat that same amount naturally. At about 8 I began gaining weight and to this day I eat a lot more than I need. I find it impossible to eat half a meal, or leave anything behind. I never get hungry either, and I never feel full. I have no idea when and how much I should eat, so I just do. I eat when I'm depressed too.