Why do i eat so much?

you just need to cut down on your eating slowly. not fast. cause like you said, you'll get light headed, etc. another thing, if you are eating a lot, try to make it healthy. that way it's not as bad. also, try to keep yourself really busy so you dont think about eating as much. that way, hours will go by and you'll be like, whoa i havent ate in 3 hours. then you eat. catch what im sayin? i hope this helped :)