.....and Dr Susan Jebb, who keeps being quoted in such articles, has taken a significant research grant from that well known independent research body, the Flour Advisory Board (see Rustpot's post about it). So now tell me she's giving unbiased nutritional advice!!
I suffer from SAD anyway and have no evidence that low-carbing makes it worse. In fact, if anything, by reducing my blood sugar swings, low-carbing has stabilised my moods.
I used to eat carbs to produce 'happy serotonin'. Trouble is, the carbs made me fat and miserable.
Now I low-carb and exercise, use a light box and take 5-HTP for the SAD - I'm a much thinner and happier person.