We have a forum here devoted to S.A.D., Fibromyalgia, Chronic Fatigue and related problems. Click on the little home icon at the top right to get to the main index page. Scroll down to the Low Carb Health & Technical Forums .. you'll see it listed there.

There are several threads of SAD discussion, and links to websites with more information. You're not alone

Hope you feel better soon .. the days are getting longer

Doreen (fellow SAD-sufferer)