Full Spectrum Light (Mercola)

How Therapeutic Use of Full-Spectrum Light Can Improve Health

http://articles.mercola.com/sites/articles/archive/2017/02/05/therapeutic-use-of-full-spectrum-light-improve-health.aspx?utm_source=dnl&utm_medium=email&utm_content=art1&utm_campaign=20170205Z1&et_cid=DM133142&et_rid=1872644544