Sher L
Med Hypotheses. 2001 Nov;57(5):609-11. doi: 10.1054/mehy.2001.1423.
Skin cells produce endogenous opioids in response to light. This results in increased skin and plasma levels of endogenous opioids. Increased plasma levels of endogenous opioids may improve mood and affect behavior. The author suggests that improvement in mood after exposure to light may be related to the light-induced increase in levels of endogenous opioids. The author speculates that genetic factors may affect the response of skin cells to light: different people may have different genetically determined responses to natural or artificial light. The author also suggests that light may affect endogenous opioids via several different mechanisms.
皮肤细胞会对光线产生内源性阿片类物质。这会导致皮肤和血浆中的内源性阿片类物质水平升高。血浆中内源性阿片类物质水平的升高可能会改善情绪并影响行为。作者认为，暴露于光线后情绪的改善可能与光线诱导的内源性阿片类物质水平升高有关。作者推测，遗传因素可能会影响皮肤细胞对光线的反应：不同的人对自然光或人造光可能有不同的遗传决定反应。作者还指出，光线可能通过几种不同的机制影响内源性阿片类物质。
