Aaron Carter has opened up about his battle with the medical condition that makes him "skinny".
In a series of tweets, the 29-year-old singer said his figure is due to a hiatal hernia that he was diagnosed with at 19.
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Carter has said he is often asked about his weight, telling Entertainment Tonight that in 2016 his small frame means he is perceived as a "meth head".
Posting to Twitter on Wednesday, Carter said: "By the way y'all wanna know why I'm so skinny? It's because @ 19 i was diagnosed with a hiatal hernia, I didn't choose that. Be kind to me.
"It's a terrible stress condition that affects me having an appetite and I'm sorry this is the way I am. Basically I have an eating disorder.
"I'm sorry, sometimes I really wish I did look better, or I eat more like y'all say, this life doesn't come with much stability.
"If you don't believe me ask my brother he was there when I was 19 [and] diagnosed. It's a stress eating disorder, I'm sorry I didn't choose this."
Carter, the brother of former Backstreet Boy Nick Carter, again dispelled rumours that his figure is due to drug use.
"No I don't do drugs, yes I feel pain, I haven't stopped working since I was 7 years old. 22 years later and I still won't give up.
"Any of my fans who I let down or made them embarrassed to be my fans anymore, I'm so sorry. I will never stop trying to win your hearts back."
Carter released an EP, LØVË, on February 10.