Scientists show how light therapy treats depression in mice model

Light therapy can help improve the mood of people with seasonal affective disorder (SAD) during short winter days, but exactly how this therapy works is not well understood. A new study finds that light therapy's beneficial effects come from activating the circadian clock gene Period1 in a part of the brain involved in mood and sleep-wake cycles.

source https://www.sciencedaily.com/releases/2021/07/210708143918.htm