The temperature is finally dropping, the days are getting shorter, and the nights are longer. This is a relief for many Arizonans, as we’re finally out of triple-digit heat. However, changes in sunlight and temperature significantly influence brain chemistry. The reduced sunlight that accompanies the winter season can modulate serotonin, a mood-regulating neurotransmitter, and increase melatonin, a sleep-inducing hormone, and impact circadian rhythm. For some, these changes are linked to Seasonal Affective Disorder (SAD).

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SAD is a type of depression that occurs most commonly in the fall and winter. While a slight dip in energy is normal when the days grow darker, SAD involves more significant changes in mood, motiv

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