We're not really sure why it [broken circadian rhythm] continues, but when they become adults, we usually have to treat it because many people need to get up early to go to work and they can't be sleeping until 11:00 or 12:00. So we use treatments like bright light therapy, melatonin, things like that that are very effective.
![We're not really sure why it [broken circadian rhythm] continues, but when they become adults, we usually have to treat it because many people need to get up early to go to work and they can't be sleeping until 11:00 or](http://cdn.quoteddaily.com/images/shelby-harris/were-not-really-sure-why-it-broken-circadian-rhythm-continues-but-when-they-become-adults-we-usually-have-to-treat.jpg)