Aptly named and upsettingly common, seasonal affective disorder (SAD) is a type of depression that’s connected to changes in seasons. For most people, it starts in the fall, sapping energy and making them feel moody, on edge, and lacking in motivation. Treatments include light therapy and medications, but prevention is the best cure. The Focus asked three trauma and mental health specialists for their best pieces of advice regarding the pre-emption and avoidance of seasonal affective disorder. Their tips and tricks highlight the wintertime value of regular physical activity and natural sunligh…