I met a friend for a later-than-usual dinner a couple of weeks ago and we were laughing at how incredibly sleepy we both were given that it now becomes pitch black by 5pm in the Bay Area.
The short winter days can make for sleepier evenings, lethargic days, and even Seasonal Affective Disorder (SAD) in patients prone to it.
Bright light therapy, medications, and other conventional treatments are effective for SAD.
But one of the missing pieces is embracing seasonal shifts.
In our modern world, we expect ourselves to maintain the same productivity, energy, and sleep patterns all year round.
Meanwhile, nature does the opposite, as trees become bare, animals hibernate, and the stars come out to say hello in the early evening hours.
I love embracing the Scandinavian concept of “hygge”, with cozy evenings, twinkle lights, homemade soups, a good book and a soft blanket.
Pair that with a purposeful dose of daytime bright light by going for a walk outside, preferably out in nature, my favourite being a brisk midday stroll on the beach.
It often does more than people expect.
But, back to bright light therapy which is one of the most underutilized tools in the clinical toolbox.
Bright light therapy (BLT) is:
- Also called phototherapy
- It’s a non-pharmacologic treatment for sleep and depressive disorders
- It involves daily exposure to bright light and is typically administered with a light therapy device (light box, wearable, or dawn simulator)
Bright light therapy was originally used to treat seasonal affective disorder (SAD). Now it’s also used in the treatment of non-seasonal depression, bipolar depression, fatigue, insomnia, and circadian rhythm disorders.
If you see patients with insomnia, depression, or fatigue, it’s a good idea to learn how to prescribe bright light therapy. See my video here for an in-depth tutorial:
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