Cathy Killick,Yorkshire
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血清素水平下降也是关键因素。作为调节情绪的重要神经递质，血清素的合成与维生素D3密切相关，而后者合成需要充足光照。当血清素浓度降低时，容易出现情绪抑郁、行动力减退、食欲异常等状况。