I am 21 and have read that your appetite fluctuates when you have CFS...or it is more common with young people. Sometimes I go several weeks without eating much because food doesn't seem appetizing. At some point in the day, I will feel faint, so I will force myself to eat something, but its n ot a lot and I'm just feeling icky with an upset stomach most of the time. People have told me they have noticed a marked weight loss....is this common? Anyone else dealing with this?