seasonal affective disorder

Seasonal affective disorder: your eye colour might be why you have the ‘winter blues’

Seasonal affective disorder: your eye colour might be why you have the ‘winter blues’

You’re not alone if colder weather and longer nights make you feel down. This well-known phenomenon, called seasonal affective disorder (SAD), might explain why people feel low, irritable, and lethargic in the winter months. For some, the condition can be serious and debilitating.