Wednesday, Sep 16, 2026 The claims desk. Receipts included. POWERED BY LENZ
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Pediatric obesity was associated with higher adult felony-conviction prevalence.

The Claim

Obesity in men lowers testosterone levels and thereby reduces criminal perpetration rates.

The Short Version

The proposed reduction in criminal perpetration is unsupported. Obesity can lower testosterone in men, but no evidence demonstrates that this hormonal effect causes less offending. The only cited longitudinal study examining obesity and later criminal outcomes instead reported higher adult felony-conviction prevalence among people with pediatric obesity, although it did not isolate men or test testosterone as a mediator.

Caveats

  • The word “thereby” asserts a causal pathway that no cited study directly tested.
  • The obesity-and-conviction evidence comes from one pediatric cohort reported in two repositories, not independent studies.
  • That cohort was not male-specific, and its general-population comparison cannot establish that obesity caused more convictions.

The Receipts

  1. Pediatric youth who have obesity have high rates of adult ...

    pmc.ncbi.nlm.nih.gov

  2. Pediatric youth who have obesity have high rates of adult criminal behavior and low rates of homeownership

    pubmed.ncbi.nlm.nih.gov

  3. Causal relationship between obesity and serum testosterone status in men: A bi-directional mendelian randomization analysis | PLOS One

    journals.plos.org

  4. Long-Term Effects of a Randomised Controlled Trial Comparing High Protein or High Carbohydrate Weight Loss Diets on Testosterone, SHBG, Erectile and Urinary Function in Overweight and Obese Men | PLOS One

    journals.plos.org

  5. Reviews - Aggression: The Testosterone-Serotonin Link

    ima.org.il

  6. Impact of Weight Loss on Testosterone Levels - PMC - NIH

    pmc.ncbi.nlm.nih.gov

  7. Is Rising Obesity Causing a Secular (Age-Independent) Decline in Testosterone among American Men? | PLOS One

    journals.plos.org

  8. Causal relationship between obesity and serum testosterone status in men: A bi-directional mendelian randomization analysis

    doi.org

  9. Genetic Associations of Birthweight, Childhood, and Adult BMI on Testosterone Levels: A Mendelian Randomization

    doi.org

  10. Elevated Serum Testosterone in Young Offenders: A Case-Control ...

    pmc.ncbi.nlm.nih.gov

+ 18 more sources — see the full list on Lenz

Filed Under

Criminal Perpetrationobesitytestosterone

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