Obviously it’s your essay and you should write about what you want, but I was just reading a blog post about essay topics written by Sara Harberson (a former Dean of Admissions, now a private college counselor) where she said this:
“I do not recommend writing about learning differences, a student’s own mental health, and eating disorders. Until admissions offices are more transparent, I cannot trust them to treat a student fairly in the process when it comes to a learning or psychological diagnosis.”
She says that in her opinion there is still a lot of discrimination in admissions.
Good luck to you! And congrats on all you have overcome!