Sleep & body clockA body-clock gene

PER3

Period 3 gene

PER3 in one lineInfluences whether you are a morning or evening person

A full entry for PER3 is on its way. For now, here is the one-line definition above and the genes it connects to below.

The honest caveat. Each entry describes a research-backed tendency, not a diagnosis. Carrying a variant tells you how your body is likely to lean, it does not label you, and nothing here is a substitute for a doctor where a medical question is involved.

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