The Fitness Scientist: 'Late Night Screen Time Linked To Cancer!' — Kristen Holmes
In this January 2024 episode, WHOOP vice president of performance science Kristen Holmes joins host Steven Bartlett to discuss circadian rhythm and its effect on long-term health. Holmes argues that late-night screen exposure disrupts the body's natural light-dark cycle and asserts an association between that disruption and elevated cancer risk, alongside separate claims about alcohol and shift work. The conversation targets a general adult audience optimizing sleep and performance rather than pediatric or adolescent screen use specifically, but the mechanism Holmes describes — light exposure from late-night devices suppressing melatonin and shifting circadian timing — is the same one raised elsewhere in this library regarding teenagers' bedtime phone use. TechKids Foundation includes this entry as a mainstream-reach discussion of screen-linked circadian disruption, while noting that Holmes's cancer-risk claim is her own framing and has not been independently assessed by TechKids Foundation.
Bartlett, Steven, host. "The Fitness Scientist: 'Even A Little Alcohol Is Hurting Your Health!', 'Late Night Screen Time Linked To Cancer!', 'Working Shifts Kills You 15 Years Early!'" Interview with Kristen Holmes. The Diary Of A CEO, January 4, 2024.