Traits - Chronotype

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Chronotype

Sleep Quality

Chronotype refers to a person's natural tendency toward earlier ("morning lark") or later ("night owl") sleep timing.

GWAS work has identified many variants linked to chronotype, often near genes in the circadian clock such as PER and CRY family genes.

This result reflects research-level variation in circadian biology and is not a sleep diagnosis or a recommended bedtime.

Light exposure, work schedule, age, social schedule, caffeine, and screen use also strongly shape actual sleep timing.

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We could not calculate your score for this genetic trait as there is not enough information in your DNA data. This may occur when specific SNPs required for analysis were not present in your uploaded file.

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Reference: Human Genome Build 37 (HG19). Other testing companies may report using the opposite strand, requiring conversion for comparison.

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