Question:
how would you know if a friend has an eating disorder? im scared one of my friends may have something wrong.
Answer:
Originally Posted by afraidforher how would you know if a friend has an eating disorder? im scared one of my friends may have something wrong. A) Ask them
B) Pay meticulous attention to what/when they eat
But don't jump to conclusions. Things are not always as they seem. If you are in a position to, just ask your friend.
Answer:
what makes you think your friend might have one? Sometimes it is hard to tell...I know when I was struggling with this issue as a teenager I was very secretive about it because I was very ashamed at the time.

I don't think confronting the person is a good idea, not even to ask them about their behavior. That will only put them on the defensive and they will never share with you. Just be their friend, pray for them, and love them like Christ would. In time if they ever tell you their struggling with this encourage them to get help first and in time if they refuse to, you may need to talk with a minister in their church who knows them well or an adult you trust who knows them well.
Answer:
If you ask your friend and they get defensive, then it's likely the answer is yes they do. If you choose to ask them, do so tactfully and carefully. You want them to know that you're asking because you care, not because you want to judge or rebuke them. Either way, if you're seriously concerned, then you seriously need to act. Eating disorders aren't something to take lightly, they can lead to more serious health problems down the road.