Evidence map›Paper›PMID 38943982›Full record

SynthesisThe journal of nutrition, health & aging2024

Effects of ketogenic diet on cognitive function of patients with Alzheimer's disease: a systematic review and meta-analysis.

Liyang Rong, Yating Peng, Qi Shen, Keying Chen, Bangjiang Fang, Weirong Li

Abstract readSystematic ReviewMeta-Analysis
In one paragraph

Synthesis in The journal of nutrition, health & aging, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed, 1 pooled it
–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

34 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  10. Sex-Specific Determinants of the Ketone Body β-Hydroxybutyrate in the General Population.The Journal of clinical endocrinology and metabolism · 2026
    Article
  11. Review
  12. Article
  13. Nutrition for healthy longevity: the past, the present and the future.The journal of nutrition, health & aging · 2026
    Article
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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

6 authors.

Liyang RongScience and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, China; Sanya Hospital of Traditional Chinese Medicine, Sanya, China.
Yating PengSchool of Basic Medical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, China.
Qi ShenScience and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, China.
Keying ChenScience and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, China.
Bangjiang FangDepartment of Emergency, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China.
Weirong LiScience and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, China. Electronic address: liwr@gzucm.edu.cn.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundKetogenic diets (KD) have shown remarkable effects in many disease areas. It has been demonstrated in numerous animal experiments that KD is effective in the treatment of Alzheimer's disease (AD). But the clinical effect of treating AD is uncertain.

objectiveTo systematically review the impact of KD on cognitive function in AD.

methodsWe conducted a search of three international databases-PubMed, Cochrane Library, and Embase-to retrieve RCTs on the KD intervention for AD from the inception of the databases through October 2023. Two reviewers searched and screened the literature, extracted and checked relevant data independently, and assessed the risk of bias of the included studies. The meta-analysis was carried out utilizing RevMan 5.3 software.

resultsA total of 10 RCTS involving 691 patients with AD were included. There were 357 participants in the intervention group and 334 participants in the control group. The duration of the KD intervention ranged from a minimum of 3 months to a maximum of 15 months. Meta-analysis results showed that KD could effectively improve the mental state of the elderly (NM scale) [MD = 7.56, 95%CI (3.02, 12.10), P = 0.001], MMSE [MD = 1.25, 95%CI (0.46, 2.04), P = 0.002], and ADAS-Cog [MD = -3.43, 95%CI (-5.98, -0.88), P = 0.008]. The elevation of ketone body (β-hydroxybutyric) [MD = 118.84, 95%CI (15.20, 222.48), P = 0.02] may also lead to the elevation of triglyceride [MD = 0.19, 95%CI (0.03, 0.35), P = 0.02] and low density lipoprotein [MD = 0.31, 95%CI (0.04, 0.58), P = 0.02].

conclusionResearch conducted has indicated that the KD can enhance the mental state and cognitive function of those with AD, albeit potentially leading to an elevation in blood lipid levels. In summary, the good intervention effect and safety of KD are worthy of promotion and application in clinical treatment of AD.

Indexed as

Alzheimer DiseaseCognitionDiet, KetogenicAgedHumansRandomized Controlled Trials as TopicAlzheimer's diseaseKetogenic dietMeta-analysisMild cognitive impairmentSystematic review

Identifiers

PMID38943982
PMCPMC12878614

What Socratic holds

Textmetadata
LicenceCC BY-NC-ND
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Registered trials

None linked

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 Socratic graph.