> Any psychiatrist worth a damn already considers these things.

Protocols however are always changing depending on new findings. Not saying this is the case, but not considering something unknown at the time doesn't make a doctor not worth a damn.

> Your assertion that people need "more sun" and "regular sleep" could very well be true, yet someone can still have ADHD.

if that was the case the treatment wouldn't be unecessary, like I specifically wrote in the comment you are replying to.