If you are among the millions of Americans who suffer from fatigue and insomnia, there may very well be a light at the end of the tunnel, a circadian light that is. No it’s not the latest saber from the latest Star Wars movie. It is new age lighting that simulates a very old light — the sun, while cancelling out the ill effects of traditional indoor lighting. And it is showing promising results in warding off unexplained fatigue as well as a whole host of diseases including diabetes, cancer, obesity, and even depression. If it sounds anecdotal, then you may very well be living in the dark. The New York Yankees, Seattle Mariners and the Atlanta Falcons are among major league sports teams who have switched to circadian lighting in their locker rooms in effort to to put bigger numbers on the scoreboard. Hospitals have installed circadian lighting in …