Yea i agree, when a person reduce her calories metalbolism rate will reduce as well and over the time the body is so used in only running that amount of matalbolism that if any extra food taken in you will gain wt.

I experience that. As there was a period of time i was so skinny ppl evn say i look like an aneroxic evn thou i am not as i so still eat my regular meals then but taken out alot of food that is rich in fat and calories. And it resulted in gastritis and my appetite shrunk and make me evn look thinner (ttz waht my frens said) so when my body began to heal i took in more food and i did gain wt. which my frens said i looked beta.

So maybe your fren's body is adjusting the metabolism so as to burn the food. It will stabalise within a vouple of weeks.

GOOD LUCK