Winter Solstice & Our Mood

Summer solstice is June 20 in the Northern hemisphere, creating the longest day while down under we freeze with the winter solstice, but what does this do to our mood? 

According to Philip Gehrman, associate director of the Behavioral Sleep Medicine Program at the University of
Pennsylvania, light serves as the strongest cue to regulate circadian rhythms which include the sleep cycle, hormonal fluctuations and body temperature over 24 hours.

But the mood effect depends on whether you are an earlybird or a night owl; generally though seasonal affective disorder (SAD), mainly associating depressed mood with winter weather, still dominates, researchers said.

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Source: pharmacydaily.com.au, Monday 20 June 2016