It’s not unusual to start feeling a little stressed, sluggish, or just generally down at this time of year. Seasonal affective disorder (SAD) is a type of depression that’s believed to be caused by the changing seasons. Typically, symptoms begin to worsen around fall and peak during the winter months. This is a time when people are especially prone to isolating, given that it becomes so cold outside. Besides therapy that can help you work through the feelings, other external factors that you can control can help, like your diet. Talk to your physician as well if you feel that…