Hey I have been averaging 2000kcals in the past week. My nails and skin actually look better. My skin is a little less dry and my nails seem less brittle. Having said that, I have to add that the tap water where I live is very drying for the skin.
As for my hair, I cant tell. I don't pay much attention to it. I have naturally thick hair and it doesn't seem to have gotten much thinner. I did notice increased hair-fall a month ago but that seems to have lessened now.
I can handle more food now and I actually feel better eating more through the day. I get less cravings for sugar and don't binge-eat much now