vida: extract claims from 2026-05-09-pmc12726400-burden-of-proof-social-isolation-dementia

- Source: inbox/queue/2026-05-09-pmc12726400-burden-of-proof-social-isolation-dementia.md
- Domain: health
- Claims: 0, Entities: 0
- Enrichments: 2
- Extracted by: pipeline ingest (OpenRouter anthropic/claude-sonnet-4.5)

Pentagon-Agent: Vida <PIPELINE>

domains/health/loneliness-increases-dementia-risk-50-percent-independently-of-depression-and-cardiovascular-disease.md

@@ -24,3 +24,10 @@ The WHO Commission on Social Connection's 3-year investigation found that loneli
 **Source:** PMC11722644, coordinated meta-analysis, 21 studies
 
 Meta-analysis of 608,561 individuals finds loneliness increases dementia risk by 19-31% (not 50%), with depression adjustment reducing HR from 1.306 to 1.189 (not to null), indicating partial rather than complete independence from depression. CVD adjustment shows negligible effect, confirming independence from cardiovascular pathways.
+
+
+## Challenging Evidence
+
+**Source:** PMC12726400 Burden of Proof study, 2025
+
+Burden of Proof analysis found overall social isolation → dementia association does NOT meet threshold for 'possible' association when using bias-corrected methodology (mean RR 1.29, 95% UI 0.98–1.71, CI crosses null). This contradicts the '50% elevated risk' claim. The BoP methodology is specifically designed to correct for the publication bias and confounding that inflate standard observational estimates. Only specific sub-measure (lack of social activity) showed non-null CI.

domains/health/loneliness-independently-increases-dementia-risk-19-31-percent-after-depression-adjustment-with-vascular-dementia-showing-strongest-association.md

@@ -24,3 +24,10 @@ Crucially, including cardiovascular risk factors (diabetes, hypertension, obesit
 The cause-specific analysis reveals differential effects: Alzheimer's disease HR = 1.393 (95% CI 1.290-1.504) versus vascular dementia HR = 1.735 (95% CI 1.483-2.029). The stronger vascular dementia association suggests inflammatory/vascular mechanisms rather than amyloid/tau pathways as the primary mediator.
 
 This evidence base is stronger than prior estimates: the WHO's "50% elevated risk" figure comes from specific social frailty studies, while this larger, more rigorous analysis gives 19-31% depending on adjustment strategy. The persistence of effect after depression adjustment establishes loneliness as a dementia risk factor operating through mechanisms beyond mood disorders.
+
+
+## Challenging Evidence
+
+**Source:** PMC12726400 Burden of Proof study, GBD methodology, 2025
+
+Burden of Proof methodology analysis of 41 studies found social isolation → dementia mean RR 1.29 (95% UI 0.98–1.71) with confidence interval CROSSING 1.0, classifying this as 'possible but uncertain' association. Only 'lack of social activity' sub-measure achieved CI not crossing null (RR 1.34, 95% UI 1.05–1.71). BoP methodology specifically corrects for publication bias and systematic biases that inflate observational estimates, producing more conservative effect estimates than standard meta-analyses.

inbox/archive/health/2026-05-09-pmc12726400-burden-of-proof-social-isolation-dementia.md

@@ -7,10 +7,13 @@ date: 2025-01-01
 domain: health
 secondary_domains: []
 format: research
-status: unprocessed
+status: processed
+processed_by: vida
+processed_date: 2026-05-09
 priority: high
 tags: [social-isolation, dementia, burden-of-proof, GBD-methodology, evidence-quality, non-clinical-determinants]
 intake_tier: research-task
+extraction_model: "anthropic/claude-sonnet-4.5"
 ---
 
 ## Content