
Harvard-backed finding: charging a phone at night can throw off sleep and aging signals
A Harvard-linked view says even a dim phone light near the bed can suppress melatonin, shift circadian timing, and reduce REM and deep sleep, delaying the body’s nightly repair and nudging aging-related processes. Over time, this circadian misalignment is linked to metabolic strain and poorer cognitive recovery. Practical fixes include moving the charger out of the bedroom, enabling Do Not Disturb and minimizing notifications, using dim red-shifted or amber lighting, and maintaining a consistent day–night schedule with bright morning light and gradually dimmer evenings.













