I have said this before in HN, but I'll repeat myself: don't trust this study. The Valkee company is financially backed by ex-Nokia execs and other people with

I have said this before in HN, but I'll repeat myself: don't trust this study. The Valkee company is financially backed by ex-Nokia execs and other people with money and influence in Finland. They have the means to get a small University in Northern Finland to make a study in their favor. There have been interesting studies about light sensivity in the skin, so why not the brain. However, this study doesn't really prove anything. Also, don't underestimate the value of placebo in the treatment of mental ailments.