I read a fanfiction one time that really made sense to me regarding L's odd eating habits. He only eats sweets and eats a lot of them, yet he's so thin. It could be because he's a cartoon character and they decided to stretch reality with his statement of being able to use his mind to stay thin as truth but in the fan fiction that was used as an excuse. The truth in the fan fiction was of him being bulimic. Where he binges on food then purges to get rid of it. That would make a lot of sense. I was just wondering if anyone has ever thought about this or what your opinion is.