Mark Hyman, M.D.@drmarkhymanInstagram

Did you know this? ⬆️ The field of sociogenomics reveals how positive relationships influence gene

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what it claims

Cultivating love, positive relationships, and physical contact (such as hugging) alters our gene expression to reduce inflammation and stimulate cellular regeneration.

mixed

Science partially supports this fascinating view. Foundational work in social genomics by Dr.

noli's read

Science partially supports this fascinating view. Foundational work in social genomics by Dr. Steve Cole (UCLA) and George Slavich confirms, via observational and transcriptomic studies, that our sense of connection influences our gene expression. They demonstrated that isolation promotes a genetic expression profile more sensitive to stress, whereas well-being and social connection attenuate it. An observational study conducted by Murray and colleagues (2018) also identified positive changes in immune gene activity in people who fall in love. Furthermore, research in laboratory and animal models shows that oxytocin, released during warm physical contact, supports immune balance and promotes relaxation. Nevertheless, asserting that a hug 'turns off' inflammation or instantly 'activates' regeneration genes is an exaggeration. These epigenetic variations occur over time and depend on an overall relational lifestyle, far from the immediate effect of a simple biological switch.

the sources

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: B+

Linked to, not proven to cause.

Effect: survival by strength of social relationships; mortality risk from loneliness/social isolation/living alone (meta-analyses of cohorts) — stronger social relationships OR 1.50 (95% CI 1.42-1.59) for survival; social isolation OR 1.29, loneliness OR 1.26, living alone OR 1.32 for mortality
Measured on: adults across many countries and age groups (308,849+ participants pooled)

These are associations from cohort studies, so healthier, better-resourced people may both connect more and live longer. The link is strong and consistent, but claims that touch or connection directly "change your gene expression" go beyond the evidence.

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