It’s that time of year again. The clocks have gone back, it’s pitch black as you finish work, the cold, dark, dreary weather swoops in. And so do the memes about how depressed you’re going to be.
As the days grow darker earlier in northern latitudes, an affliction takes hold. Not just run-of-the-mill discontent over darker evenings, but the makings of an actual mental illness. Seasonal affective disorder, or SAD, is estimated to affect about 10 percent of people in northern latitudes. It’s often marked by
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