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8 common food additives linked to high blood pressure and heart disease | ScienceDaily (opens in a new tab)

sciencedaily.com · 2026-09-20

Short answerEvidenceSource

Short answer

Mixed

Mixed.

The claims we could check match the study, but some claims were not covered by the evidence reviewed.

  • 4 supported
  • 3 not covered

Checked against the study summary. The full text wasn't available, so some details couldn't be settled either way.

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Follow the evidence trail
1
2

NewsLink checks it

Mixed

Every claim we could check holds up. Four of seven claims match the study. This overall rating is based only on the claims we could check. Three claims the study doesn't address.

  • 4 supported
  • 3 not covered
Open claim evidence
3
Then inspect each claim

Evidence layer

Claim by claim

Each claim gets a verdict. Expand it to see the evidence directly below.

7 claims in this story

Showing all 7 claimsChoose a verdict to focus the list.

Claim 1 of 7Not coveredThe study was led by Dr. Mathilde Touvier and Anaïs Hasenböhler as part of the NutriNet-Santé project in France, using data from 112,395 volunteers followed for about seven to eight years.View evidenceHide evidence

As stated112,395 volunteers; average follow-up of seven to eight years

Why this verdict

The cohort size and follow-up are supported by the profile: 112,395 participants with median follow-up 7.9 years. However, the supplied abstract-level paper profile does not verify the named study leadership/authorship claim involving Dr. Mathilde Touvier and Anaïs Hasenböhler.

1

Study evidence

Higher cumulative exposure to total non-antioxidant preservative food additives was associated with increased incidence of hypertension.HR 1.29 (95% CI 1.20–1.39) comparing higher vs lower consumers

“The associations between exposure to these compounds and incidence of hypertension and cardiovascular diseases (CVD) were investigated in the NutriNet-Santé cohort (France, 2009-2024).”
2

Study evidence

Higher cumulative dietary exposure to total non-antioxidant preservative additives was associated with increased incidence of cardiovascular disease.HR 1.16 (95% CI 1.04–1.29) for higher versus lower consumers

“The associations between exposure to these compounds and incidence of hypertension and cardiovascular diseases (CVD) were investigated”
Claim 2 of 7Not coveredEight preservatives were specifically associated with a higher risk of high blood pressure: potassium sorbate, potassium metabisulphite, sodium nitrite, ascorbic acid, sodium ascorbate, sodium erythorbate, citric acid, and rosemary extracts.View evidenceHide evidence

As statedEight preservatives

Why this verdict

The abstract-level profile supports that eight of 17 individual preservatives consumed by at least 10% of participants were associated with higher hypertension incidence after multiple-testing correction. However, the profile does not identify those eight additives by name, so the specific list given in the story cannot be verified at this depth.

1

Study evidence

Higher cumulative exposure to total non-antioxidant preservative food additives was associated with increased incidence of hypertension.HR 1.29 (95% CI 1.20–1.39) comparing higher vs lower consumers

“The associations between exposure to these compounds and incidence of hypertension and cardiovascular diseases (CVD) were investigated in the NutriNet-Santé cohort (France, 2009-2024).”
Claim 3 of 7Not coveredAscorbic acid was also specifically associated with cardiovascular disease.View evidenceHide evidence

Why this verdict

The profile supports that one individual additive was associated with higher CVD incidence after multiple-testing correction, but the abstract-level evidence does not identify the additive. Therefore the specific claim that it was ascorbic acid is not verifiable from the supplied profile.

1

Study evidence

Higher cumulative dietary exposure to total non-antioxidant preservative additives was associated with increased incidence of cardiovascular disease.HR 1.16 (95% CI 1.04–1.29) for higher versus lower consumers

“The associations between exposure to these compounds and incidence of hypertension and cardiovascular diseases (CVD) were investigated”
Claim 4 of 7SupportedCommon preservatives found across the processed food supply may be associated with a greater risk of high blood pressure and cardiovascular disease.View evidenceHide evidence

Why this verdict

The abstract-level profile supports an associational, hedged claim: preservative additive exposures were associated with higher incidence of hypertension and CVD in the NutriNet-Santé cohort, especially total non-antioxidant preservatives for both outcomes. The story’s wording does not claim causation.

1

Study evidence

Higher cumulative exposure to total non-antioxidant preservative food additives was associated with increased incidence of hypertension.HR 1.29 (95% CI 1.20–1.39) comparing higher vs lower consumers

“The associations between exposure to these compounds and incidence of hypertension and cardiovascular diseases (CVD) were investigated in the NutriNet-Santé cohort (France, 2009-2024).”
2

Study evidence

Higher cumulative dietary exposure to total non-antioxidant preservative additives was associated with increased incidence of cardiovascular disease.HR 1.16 (95% CI 1.04–1.29) for higher versus lower consumers

“The associations between exposure to these compounds and incidence of hypertension and cardiovascular diseases (CVD) were investigated”
Claim 5 of 7SupportedParticipants with the highest intake of 'non-antioxidant' preservatives had a 29% higher risk of hypertension and a 16% higher risk of cardiovascular disease than those consuming the lowest amounts.View evidenceHide evidence

As stated29% higher risk of hypertension; 16% higher risk of cardiovascular disease

Why this verdict

The profile reports total non-antioxidant preservatives associated with incident hypertension, HR 1.29, and incident CVD, HR 1.16, comparing higher versus lower consumers. Describing these as 29% and 16% higher risk is consistent with the hazard ratios, provided it remains associational.

1

Study evidence

Higher cumulative exposure to total non-antioxidant preservative food additives was associated with increased incidence of hypertension.HR 1.29 (95% CI 1.20–1.39) comparing higher vs lower consumers

“The associations between exposure to these compounds and incidence of hypertension and cardiovascular diseases (CVD) were investigated in the NutriNet-Santé cohort (France, 2009-2024).”
2

Study evidence

Higher cumulative dietary exposure to total non-antioxidant preservative additives was associated with increased incidence of cardiovascular disease.HR 1.16 (95% CI 1.04–1.29) for higher versus lower consumers

“The associations between exposure to these compounds and incidence of hypertension and cardiovascular diseases (CVD) were investigated”
Claim 6 of 7SupportedPeople who consumed the greatest amounts of antioxidant preservatives had a 22% higher risk of hypertension.View evidenceHide evidence

As stated22% higher risk of hypertension

Why this verdict

The profile reports total antioxidant preservatives associated with higher hypertension incidence, HR 1.22, consistent with the story’s statement of a 22% higher risk.

1

Study evidence

Higher cumulative exposure to total non-antioxidant preservative food additives was associated with increased incidence of hypertension.HR 1.29 (95% CI 1.20–1.39) comparing higher vs lower consumers

“The associations between exposure to these compounds and incidence of hypertension and cardiovascular diseases (CVD) were investigated in the NutriNet-Santé cohort (France, 2009-2024).”
Claim 7 of 7SupportedThe article emphasizes that the findings are observational and cannot prove the preservatives directly caused high blood pressure or heart disease.View evidenceHide evidence

Why this verdict

The paper profile states that the study is observational, cannot establish causality, and calls for experimental research to investigate mechanisms. This matches the story’s caveat that the findings do not prove direct causation.

1

Study evidence

Higher cumulative exposure to total non-antioxidant preservative food additives was associated with increased incidence of hypertension.HR 1.29 (95% CI 1.20–1.39) comparing higher vs lower consumers

“The associations between exposure to these compounds and incidence of hypertension and cardiovascular diseases (CVD) were investigated in the NutriNet-Santé cohort (France, 2009-2024).”
2

Study evidence

Higher cumulative dietary exposure to total non-antioxidant preservative additives was associated with increased incidence of cardiovascular disease.HR 1.16 (95% CI 1.04–1.29) for higher versus lower consumers

“The associations between exposure to these compounds and incidence of hypertension and cardiovascular diseases (CVD) were investigated”
Then look for missing context

Context layer

What the story left out

Important study details the story did not include.

  • Exposure assessment used repeated 24-hour dietary records, commercial brand information, composition databases, and laboratory assays to derive cumulative time-dependent preservative exposures.

    The story mentions the NutriNet-Santé project and cohort size, but the supplied presentation does not reflect the exposure-assessment pipeline that underpins the associations.

    From exposure assessment pipeline

  • Potential residual confounding and exposure measurement error remain important interpretation-changing limitations.

    The story includes a general observational-causality caveat, but it does not specifically convey residual confounding or possible exposure misclassification/measurement error, both of which materially affect interpretation of diet-additive cohort associations.

    From Prospective cohort with time-dependent cumulative exposure modeling; Prospective cohort analysis (NutriNet-Santé); expos

  • At abstract depth, several analytic details are missing, including covariates, outcome ascertainment details, sensitivity analyses, and individual-additive effect estimates.

    The presentation does not indicate that the abstract-level evidence lacks full model details and does not provide individual-additive effect sizes or, for CVD, the additive identity.

    From Prospective cohort with time-dependent cumulative exposure modeling; Prospective cohort analysis (NutriNet-Santé)

6 things the story did carry across
  • Large prospective NutriNet-Santé cohort design: 112,395 adults in France followed for a median 7.9 years.
  • Total non-antioxidant preservatives were associated with higher incidence of both hypertension and CVD.
  • Total antioxidant preservatives were associated with higher incidence of hypertension.
  • Eight individual preservatives, among 17 consumed by at least 10% of participants, were associated with higher hypertension incidence after multiple-testing correction.
  • One individual preservative additive was associated with higher CVD incidence after multiple-testing correction, but the abstract-level profile does not identify it or provide its effect estimate.
  • Observational design means the associations cannot establish that preservatives caused hypertension or CVD; experimental work is needed for mechanisms and causal inference.
Then read the study layer

Study layer

Study at a glance

Scan the study first. Expand only the parts you want to inspect.

Pieces of work

3

Evidence read

study summary

Lead result

human in vivo

1Lead resulthuman in vivoEstimate associations between dietary exposure to preservative food additives (total and specific classes/substances) and incident hypertension in the NutriNet-Santé prospective cohort.Prospective cohort with time-dependent cumulative exposure modelingExpand

In plain English

In the NutriNet-Santé prospective cohort (n=112,395; median follow-up 7.9 y), higher cumulative time-dependent dietary exposure to preservative food additives was associated with increased incidence of hypertension. Total non-antioxidant preservatives and total antioxidant preservatives were associated with higher hypertension incidence; multiple individual additives (8 of 17 consumed by ≥10% of participants) were also associated after multiple-testing correction. Associations were estimated using multi-adjusted, time-dependent Cox models based on repeated 24-h dietary records and additive composition databases/laboratory assays.

Key findings

  • Higher cumulative exposure to total non-antioxidant preservative food additives was associated with increased incidence of hypertension.HR 1.29 (95% CI 1.20–1.39) comparing higher vs lower consumers
  • Higher cumulative exposure to total antioxidant preservative food additives was associated with increased incidence of hypertension.HR 1.22 (95% CI 1.13–1.31)
“The associations between exposure to these compounds and incidence of hypertension and cardiovascular diseases (CVD) were investigated in the NutriNet-Santé cohort (France, 2009-2024).”
What this piece can’t prove
  • Observational prospective design reported; experimental studies were recommended by authors to investigate mechanisms and causal inference.
  • Abstract does not specify covariates included in the multivariable models or other analytic details (e.g., handling of missing data).

1 further detail could not be confirmed from the summary.

2human in vivoEstimate associations between dietary exposure to preservative food additives (total and specific classes/substances) and incident cardiovascular diseases (CVD) in the NutriNet-Santé prospective cohort.Prospective cohort analysis (NutriNet-Santé)Expand

In plain English

Prospective cohort analysis (NutriNet-Santé, 2009–2024) assessing associations between cumulative dietary exposure to preservative food additives (total and individual substances) and incident cardiovascular disease (CVD) using time-dependent exposure variables and multivariable Cox proportional hazards models.

Key findings

  • Higher cumulative dietary exposure to total non-antioxidant preservative additives was associated with increased incidence of cardiovascular disease.HR 1.16 (95% CI 1.04–1.29) for higher versus lower consumers
  • One individual preservative additive (out of 17 additives consumed by ≥10% of participants) was reported as associated with higher incidence of CVD after multiple testing correction.
“The associations between exposure to these compounds and incidence of hypertension and cardiovascular diseases (CVD) were investigated”
What this piece can’t prove
  • Observational cohort design subject to residual confounding and cannot establish causality.
  • Abstract lacks detail on CVD outcome definitions, ascertainment methods, and the complete list of covariates included in the multivariable models.

2 further details could not be confirmed from the summary.

3secondary dataConstruct/derive individual-level time-dependent exposures to preservative food additives by linking repeated 24-h dietary records with multiple composition databases and ad hoc laboratory assays in food matrices.exposure assessment pipelineExpand

In plain English

The study derived individual-level, time-dependent exposures to preservative food additives by linking repeated 24-h dietary records (up to 96 per participant, including commercial brand information) with multiple additive composition databases and ad hoc laboratory assays performed in food matrices. These linked data were used to construct cumulative time-dependent exposure metrics that served as predictors in downstream multi-adjusted Cox regression models of hypertension and cardiovascular disease incidence. The exposure derivation produced summary exposure constructs (e.g., total preservatives, total antioxidant preservatives, total non-antioxidant preservatives) and identified that the sum of total preservatives encompassed 58 substances consumed by ≥1 participant and that 17 individual additives were consumed by ≥10% of the study population.

Key findings

  • Dietary assessment used repeated 24-h records (up to 96) including commercial brands to capture consumptions over follow-up.
  • Exposure estimation combined multiple composition databases with ad hoc laboratory assays in food matrices to quantify preservative additive contents and inform exposure values.
“Dietary intakes were assessed using repeated 24-h dietary records (up to 96), including commercial brands.”
What this piece can’t prove
  • No information provided on laboratory assay protocols, analytical validation, limits of detection/quantification, or quality control measures.
  • Unclear how missing or ambiguous product/additive information was handled (imputation, exclusion, assumptions).

3 further details could not be confirmed from the summary.

Finally, the search trail

Method layer

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Papers considered

The selected paper, plus nearby candidates.

PubMed, Europe PMC, Crossref · 32 candidate papers

Candidate

Additifs conservateurs : deux grandes études suggèrent des liens avec un risque accru de cancers et de diabète de type 2

2026 · Crossref

Source (opens in a new tab)

And 26 more candidates considered.