A girl I know was talking to me, and she told me that maybe for the past week, she hasn't been hungry, and when she eats she can only take 2 or three bites of something and then she feels full. And She Jogs/Runs for exercise, and she said that she lost maybe 5 lbs already. And She Told Me She Worried because she don't want to get sick. I Am Worried About this, and was wondering what this may be from? :confused:

Could be anorexia.
Does she have energy, feel tired a lot, any other symptoms?