The Diary Of A CEO with Steven Bartlett

The Scientist Who Scans Fathers' Brains: Parenthood Shrinks Your Brain, And Drops Testosterone 25%!

August 24, 2026·1h 28m·6-min readconversationaleducation
Podzilla Summary (6 min)
TLDR
Fatherhood triggers profound biological and psychological changes in men, including brain shrinkage, testosterone drops, and hormonal shifts—all of which are adaptive and beneficial. Despite cultural narratives that frame parenting as a sacrifice, research shows it enhances long-term brai

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Guest

D

Darby Saxbe

conversational on The Diary Of A CEO with Steven Bartlett

Mentions

Books, people, and resources mentioned in this episode.

People

Darby SaxbeStevenRobert WaldingerErika Komisar

Books

The Dad Shiftby Darby Saxbe

Companies

Whoop

Research & Papers

UK Biobank studyHarvard Study of Adult Development

Topics

Career ChangeFamily FinanceHormonesMental HealthNeuroscienceParenting

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