Vajenda (Dr. Jen Gunter) – Read the Fine Print on the 'HRT Prevents Dementia' Study

Tier 1: Established: peer-reviewed research or government health authority
Publisher: The Vajenda (Dr. Jen Gunter, OB/GYN; author of The Vagina Bible and The Menopause Manifesto) · Published: August 28, 2026 · Accessed: August 28, 2026

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Claims this source supports

• The Squires UK Biobank study found no statistically significant benefit from menopausal hormone therapy for women with natural menopause – the group most women will think of when they hear 'HRT lowers dementia risk' – and this null finding was not mentioned in the abstract, which leads with the pooled 10% reduction and the most favorable subgroups.
• The strongest risk reduction was in early surgical menopause (26% with MHT), which Gunter reads as consistent with reversing surgery-induced risk – replacing estrogen lost abruptly – rather than evidence that MHT is broadly neuroprotective.
• A subgroup finding (starting MHT at ages 51-56 associated with 18% lower dementia risk, while starting at 46-50 was not significant) is a subgroup-of-a-subgroup result – one significant finding flanked by non-significant ones, likely chance; a hypothesis to test in a trial, not a finding to act on.
• The UK Biobank MHT data is a one-time, self-reported snapshot from enrollment (2006-2010): 'ever used HRT' plus age first/last used, with no dose, formulation, route, or full duration captured; '≥1 year' lumps 3 years with 10 years, and <1-year users are grouped with never-users.
• Observational data cannot establish cause and effect: healthier, wealthier women are more likely to use MHT (healthy-user effect), and cognitive decline before a dementia diagnosis can reduce the likelihood of starting MHT (reverse causation); the UK Biobank cohort is healthier than the general UK population.
• The study cannot guide prescribing: the findings for surgical and premature menopause align with existing recommendations from all major menopause societies (use estrogen until roughly the average age of menopause, ~51), and Gunter flags the 'menofluencer' hype machine amplifying the 10% line while ignoring null or negative observational studies.