Evidence map›Paper›PMID 40415164›Full record

SynthesisAging clinical and experimental research2025

Association of antioxidants intake in diet and supplements with risk of Alzheimer's disease: a systematic review and dose-response meta-analysis of prospective cohort studies.

Xin Hu, Jia Zhou, Yue Sun, Zhiwen Wang

Abstract readSystematic ReviewMeta-Analysis
In one paragraph

Synthesis in Aging clinical and experimental research, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

7 citing papers in PubMed.

  1. Trial
  2. Identification of chemicals targeting dementia genes and pathways in the Comparative Toxicogenomics Database.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026
    Article
  3. Review
  4. Article
  5. Review
  6. Review
  7. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Xin Hu *School of Nursing, Peking University, 38 Xueyuan Road, Haidian District, Beijing, 100191, China.
Jia Zhou *School of Nursing, Peking University, 38 Xueyuan Road, Haidian District, Beijing, 100191, China.
Yue SunSchool of Nursing, Peking University, 38 Xueyuan Road, Haidian District, Beijing, 100191, China.
Zhiwen WangSchool of Nursing, Peking University, 38 Xueyuan Road, Haidian District, Beijing, 100191, China. wzwjing@sina.com.

Funding

Incubation Fund for Scientific Research and Innovation of Leading Talents of Unnamed Nursing of Peking University LJRC22YB03National Natural Science Foundation of China 72274007
6 · The paper itself

Abstract

BACKGROUND &

aimsPrevious studies have shown that antioxidants may be associated with risk of Alzheimer's disease (AD). However, some findings have failed to demonstrate a significant correlation. To rigorously evaluate this relationship, a comprehensive review and meta-analysis were conducted.

methodsAll relevant cohort studies reporting association between antioxidants intake (diet and/or supplement use) and AD risk were searched in 9 electronic databases and 4 registration platforms from their inception up to March 15, 2023. Pooled hazard ratios (HRs) and 95% confidence intervals (CIs) were calculated using either a fixed-effects or random-effects model. Heterogeneity was assessed using I

resultsEleven cohort studies were included. The pooled HRs of AD were 0.90 (95% CI = 0.60-1.34) and 0.94 (95% CI = 0.75-1.17) for the dietary intake of vitamin E, 0.90 (95% CI = 0.76-1.07) for the vitamin E supplement use. The pooled HRs of AD were 0.84 (95% CI = 0.76-0.93) and 0.60 (95% CI = 0.35-1.02) for the dietary intake of vitamin C, 0.85 (95% CI = 0.72-1.00) for the vitamin C supplement use. The pooled HRs of AD were 1.02 (95% CI = 0.85-1.22) and 0.86 (95% CI = 0.68-1.07) for the dietary intake of beta-carotene. Notably, no significant dose-response relationship was observed.

conclusionsA high dietary intake of vitamin C (≥ 75 mg/d) was found to have a statistically significant impact on reducing the risk of AD. However, no significant association was observed between dietary intake of vitamin E or beta-carotene, or the use of vitamin E or vitamin C supplement use, and the risk of AD.

Indexed as

Alzheimer DiseaseAntioxidantsDietDietary SupplementsDose-Response Relationship, DrugHumansProspective StudiesRisk FactorsVitamin EAntioxidantsVitamin EAlzheimer’s diseaseAntioxidantsDietary intakeMeta-analysisSupplement use

Identifiers

PMID40415164
PMCPMC12104107

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.