extract: 2024-02-23-jama-network-open-snap-antihypertensive-adherence-food-insecure
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@ -25,6 +25,12 @@ A systematic review published in *Hypertension* (AHA journal) analyzed 10,608 re
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CARDIA prospective cohort (N=3,616, 20-year follow-up) shows food insecurity at age 40 predicts 41% higher CVD incidence by age 60, with effect persisting after adjustment for income and education. This establishes temporality: food insecurity → CVD, not just correlation. The mechanism likely operates through the UPF-inflammation-hypertension pathway since the effect is independent of general socioeconomic status.
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### Additional Evidence (extend)
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*Source: [[2024-02-23-jama-network-open-snap-antihypertensive-adherence-food-insecure]] | Added: 2026-04-01*
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SNAP receipt reduces medication nonadherence by 13.6 percentage points specifically in food-insecure hypertensive patients (zero effect in food-secure patients), establishing that food insecurity operates through a medication adherence mechanism—the food-medication budget trade-off—not just through dietary pathways. MEPS-NHIS 2016-2017, n=6,692.
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Relevant Notes:
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- hypertension-related-cvd-mortality-doubled-2000-2023-despite-available-treatment-indicating-behavioral-sdoh-failure.md
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@ -23,6 +23,12 @@ This is mechanistic confirmation that the food environment doesn't just generate
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---
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### Additional Evidence (extend)
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*Source: [[2024-02-23-jama-network-open-snap-antihypertensive-adherence-food-insecure]] | Added: 2026-04-01*
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SNAP operates through a different mechanism than Food is Medicine programs—rather than changing diet composition, SNAP relieves the financial trade-off that forces patients to choose between food and medications. This medication adherence pathway is specific to food-insecure patients (13.6 pp improvement) with zero effect in food-secure populations, suggesting SNAP addresses structural budget constraints rather than dietary knowledge or access to healthy foods.
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Relevant Notes:
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- [[five-adverse-sdoh-independently-predict-hypertension-risk-food-insecurity-unemployment-poverty-low-education-inadequate-insurance]]
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- [[food-insecurity-independently-predicts-41-percent-higher-cvd-incidence-establishing-temporality-for-sdoh-cardiovascular-pathway]]
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@ -0,0 +1,28 @@
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---
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type: claim
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domain: health
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description: Food assistance relieves the competing expenditure pressure between purchasing food and medications, creating a pathway to hypertension control that operates independently of dietary change
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confidence: likely
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source: JAMA Network Open, February 2024; MEPS-NHIS linked dataset 2016-2017, n=6,692
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created: 2026-04-01
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attribution:
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extractor:
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- handle: "vida"
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sourcer:
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- handle: "jama-network-open"
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context: "JAMA Network Open, February 2024; MEPS-NHIS linked dataset 2016-2017, n=6,692"
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---
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# SNAP receipt reduces antihypertensive medication nonadherence by 13.6 percentage points in food-insecure hypertensive patients but has no effect in food-secure patients, establishing the food-medication trade-off as a specific SDOH mechanism
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Among 6,692 hypertensive patients in the linked MEPS-NHIS dataset (2016-2017), SNAP recipients who were food-insecure showed 13.6 percentage points lower medication nonadherence compared to food-insecure non-recipients. The critical finding is specificity: SNAP showed zero effect on medication adherence in food-secure populations. This dose-response pattern validates a specific mechanism—food insecurity creates a budget constraint that forces households to choose between food and medication purchases. SNAP relieves this trade-off by providing food purchasing power, freeing household income for medications. This is distinct from the dietary pathway studied in Food is Medicine interventions. The effect operates at scale through existing SNAP infrastructure (serving 42 million Americans) without requiring new clinical programs. While this study measures adherence rather than blood pressure directly, medication nonadherence is the primary driver of treatment-resistant hypertension, making the clinical pathway to BP control well-established even though not directly measured here.
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---
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Relevant Notes:
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- [[five-adverse-sdoh-independently-predict-hypertension-risk-food-insecurity-unemployment-poverty-low-education-inadequate-insurance]]
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- [[food-insecurity-independently-predicts-41-percent-higher-cvd-incidence-establishing-temporality-for-sdoh-cardiovascular-pathway]]
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- [[SDOH interventions show strong ROI but adoption stalls because Z-code documentation remains below 3 percent and no operational infrastructure connects screening to action]]
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Topics:
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- [[_map]]
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@ -0,0 +1,4 @@
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## Prior Art (automated pre-screening)
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- [food-insecurity-independently-predicts-41-percent-higher-cvd-incidence-establishing-temporality-for-sdoh-cardiovascular-pathway](domains/health/food-insecurity-independently-predicts-41-percent-higher-cvd-incidence-establishing-temporality-for-sdoh-cardiovascular-pathway.md) — similarity: 0.57 — matched query: "food insecurity hypertension"
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- [five-adverse-sdoh-independently-predict-hypertension-risk-food-insecurity-unemployment-poverty-low-education-inadequate-insurance](domains/health/five-adverse-sdoh-independently-predict-hypertension-risk-food-insecurity-unemployment-poverty-low-education-inadequate-insurance.md) — similarity: 0.56 — matched query: "food insecurity hypertension"
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@ -7,9 +7,15 @@ date: 2024-02-23
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domain: health
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secondary_domains: []
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format: journal article
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status: unprocessed
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status: processed
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priority: high
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tags: [SNAP, hypertension, medication-adherence, food-insecurity, SDOH, antihypertensive]
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processed_by: vida
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processed_date: 2026-04-01
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claims_extracted: ["snap-reduces-antihypertensive-nonadherence-13-6-pp-in-food-insecure-patients-through-food-medication-trade-off-relief.md"]
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enrichments_applied: ["five-adverse-sdoh-independently-predict-hypertension-risk-food-insecurity-unemployment-poverty-low-education-inadequate-insurance.md", "food-as-medicine-interventions-produce-clinically-significant-improvements-during-active-delivery-but-benefits-fully-revert-when-structural-food-environment-support-is-removed.md"]
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extraction_model: "anthropic/claude-sonnet-4.5"
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extraction_notes: "pre-screen: 2 prior art claims from 5 themes"
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---
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## Content
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@ -53,3 +59,11 @@ PRIMARY CONNECTION: [[SDOH interventions show strong ROI but adoption stalls bec
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WHY ARCHIVED: Provides specific mechanism evidence for SNAP improving hypertension outcomes — via medication adherence pathway, not dietary change. Adds a second mechanistic pathway to the food-environment → hypertension thread.
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EXTRACTION HINT: Extract the mechanism finding precisely — "food insecurity creates food-medication trade-off; SNAP relieves the trade-off; this is the pathway to medication adherence improvement." Be careful to note this is adherence, not direct BP outcome. The clinical implication for BP is strong but indirect.
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## Key Facts
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- Study used linked MEPS-NHIS dataset for 2016-2017 with 6,692 hypertensive participants
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- SNAP recipients who were food-insecure showed 8.17 percentage point difference in nonadherence compared to non-recipients
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- The 13.6 percentage point reduction represents the food-insecure-specific effect
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- Published in JAMA Network Open, February 23, 2024
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- Study design was retrospective cohort
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