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Mark Hyman, M.D.@drmarkhymanTikTok

Your phone might be stealing more than your time. It could be stealing your sleep, your …more

original sound — @drmarkhyman

what it claims

Take a digital break by blocking internet and social media access on your smartphone to restore emotional well-being, regain restful sleep, and reconnect with the real world.

mixed

The research mentioned is based on a high-quality randomized controlled trial (RCT) published in 2025 in the journal PNAS Nexus by Adrian Ward’s team (University of Texas).

noli's read

The research mentioned is based on a high-quality randomized controlled trial (RCT) published in 2025 in the journal PNAS Nexus by Adrian Ward’s team (University of Texas). The study shows that by blocking mobile internet access, participants significantly improve their well-being and attention. The positive impact on mood was even found to be comparable to the average effect of conventional mood support. Participants also gained an average of 17 minutes of sleep per night. However, the creator mentions a four-week duration, whereas the active blocking lasted only 14 days in the study protocol. Furthermore, the mentions of reconnecting with nature and savoring food are poetic extrapolations of time spent "offline" rather than data objectively measured by the researchers. Finally, the study highlights that only 25% of participants succeeded in maintaining the restriction for the entire period, revealing the true difficulty of this practice.

the sources

  1. 1Hunt MG, Marx R, Lipson C, Young J. 2018
  2. 2Yang J, Fu X, Liao X, Li Y. 2019

Claimed by Mark Hyman, M.D. Noli grades the claim, never the person.

Decoded by Noli · July 13, 2026 · the original post

What the graded evidence says

Evidence
C

Linked to, not proven to cause.

Effect
loneliness/depression after limiting social media (RCT); association of problematic smartphone use with poor sleep, anxiety, depression — reduced loneliness and depressive symptoms when limiting social media to ~30 min/day for 3 weeks (small RCT); problematic use robustly associated with poorer sleep and mood
Measured on
young adults / students (RCT); broad samples for the association

What’s uncertain

The randomized evidence is limited and small-scale; the strong links to poor sleep and mood are largely associational. Benefits are modest and individual.

Mark Hyman, M.D. in the Register140 claims graded · solidity 73/100See their record →

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