Sleep patterns vary widely among individuals. Some thrive on minimal rest, while others need more. Late bedtimes, often fueled by Netflix binges or gaming sessions until 2 a.m., define 'night owls.' These individuals face challenges rising early for work, leading to chronic fatigue. Recent research from Rockefeller University reveals that an inability to retire early stems from a genetic mutation.
Scientists at Rockefeller University identified a variation in the CRY1 gene that slows the circadian clock—our internal timer dictating sleep and wake cycles. In night owls, this rhythm extends longer, delaying tiredness until late hours. Published in the journal Cell, the study suggests this mutation affects about 1 in 75 people in certain populations.
Normally, circadian genes cycle on and off predictably. The CRY1 protein helps regulate this by deactivating them. A mutated CRY1 remains active longer, postponing melatonin release—the sleep hormone—from its typical 9-10 p.m. onset to 2-3 a.m. Current management includes enforcing early bedtimes, strict schedules, or light therapy. No targeted treatments exist yet.
Upcoming research will explore CRY1's effects on hunger and other hormones. Stay tuned for updates.
