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“It is thought that a lack of sunlight stops the hypothalamus (a small part of the brain that regulates important functions, including circadian rhythms) from working properly, which leads to a lack of serotonin (the "happy hormone") and a disrupted body clock.” — Oliver Heath
It is thought that a lack of sunlight stops the hypothalamus (a small part of the brain that regulates important functions, including circadian rhythms) from working properly, which leads to a lack of serotonin (the "happy hormone") and a disrupted body clock.