omg I never noticed a link but YES.
FYI this wake-up light changed my life (and I bought one for each of my kids and it changed our whole morning--our school mornings are a piece of cake now)
btw hate to bring it up but cutting caffeine not down, but OFF (after the withdrawal was over, about 1-2 weeks) really helped my anxiety. I read about it; people are very different genetically in how they process caffeine so it might help.
http://www.amazon.com/Philips-Hf3470-Wake-up-Light-White/dp/B003XN4RIC/ref=sr_1_1?s=hpc&ie=UTF8&qid=1384971299&sr=1-1&keywords=philips+wake+up