I have always been a picky eater, and ever since I was little my parents (and others) have told me, "You don't eat enough to keep a bird alive."
I, too, eat mostly (I'd say 99.8%) carbs (pastas, potatoes, etc)... but I will occasionally eat fruit. I like bananas, grapes, and strawberries, watermelon, and (some) cantaloupe - although like I said, I hardly ever eat the fruit. Oh, and I really like chicken.
But most of the time, I can eat a few bites, and feel full. Sometimes it even gets to the point where I feel like if I put another bite of food in my mouth I will throw up. I even get a (sometimes very severe) gagging sensation in the back of my throat.
And like mecs1010, I am young (22) but feel quite old at times, have no energy (I have been known to sleep upwards of 20 a day), I have constant headaches (to the point where I feel strange if I DON'T have one)