I know I've read of "light bars" and a search online for "SAD lirht therapy" yielded several links. Here is one of interest, although I wouldn't necessarily swallow all claims as it it=s a commercial rather than a medical sight. http://salonchannel.com/articles/light.htm
It did remind me that one of the things I wanted to suggest is that you research the newest recommendations (Much higher than before) for levels of calcium, magnesium, phosphorus, and Vitamin D.