One man's bipolar symptoms have been linked to the lunar cycle. Typically, our circadian rhythm (biological clock) is linked to the sun, but this patient's circadian rhythm was also linked to the moon. Every new moon, he experienced insomnia and switched from a depressive episode to a manic episode.

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One man's bipolar symptoms have been linked to the lunar cycle. Typically, our circadian rhythm (biological clock) is linked to the sun, but this patient's circadian rhythm was also linked to the moon. Every new moon, he experienced insomnia and switched from a depressive episode to a manic episode.