Abstract
Habitual alcohol consumption and circadian timing are connected. Studies have found that heavy alcohol use is associated with eveningness. Only 2 studies have assessed dim light melatonin onset (DLMO) in the context of habitual alcohol use, and both reported that a shorter DLMO-midsleep interval was associated with heavier alcohol use. A gap in this research is the potential impact of alcohol use on the circadian photoreceptor and the intrinsically photosensitive retinal ganglion cells, which influence circadian timing.
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