Chocolate chip cookies and carb-binging. Oversleeping. Weight gain. Gloom. Low energy, social isolation. Brain fog. Yup: Winter is coming. These are a few symptoms making up seasonal affective disorder, or SAD. And SAD is real.

We were made to spend days outside. Human bodies need light to calibrate circadian rhythms, create proper sleep, and absorb vitamin D for bones and mood. While light therapy doesn’t offer vitamin D (vitamin D supplements do), light therapy helps a host of other woes.

People with SAD often suffer........

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