Curcumin (turmeric) & Alzheimer disease

Written based on 31 research studies on PubMed, searched on 11 Nov 2026.

The claim

Posts online say that curcumin (turmeric) helps with Alzheimer disease.

Where research stands

We found 365 published papers on curcumin (turmeric) and Alzheimer disease. They were published between 2001 and 2026. 6 of them are studies in people. 4 of them compared people who got it with a group that did not. 165 were studies in animals, and 41 were only in cells in the lab. 71 papers are reviews that sum up other studies. 7 papers were retracted. 1 new study in people is running or will start soon, say the trial registers. 2 research projects on curcumin (turmeric) for Alzheimer disease are funded and still running.

• 6In people4 with a comparison group
• 165In animals
• 41Only in the lab

What the studies found

We have not summed up these studies in words yet. The most important papers are listed under Sources.

Verdict

Sources

1. Dietary Supplementation with Curcumin Reduce Circulating Levels of Glycogen Synthase Kinase-3β and Islet Amyloid Polypeptide in Adults with High Risk of Type 2 Diabetes and Alzheimer's Disease.2020 · Nutrients · Randomised trial
2. Turmeric improves post-prandial working memory in pre-diabetes independent of insulin.2014 · Asia Pac J Clin Nutr · Randomised trial
3. Oral curcumin for Alzheimer's disease: tolerability and efficacy in a 24-week randomized, double blind, placebo-controlled study.2012 · Alzheimers Res Ther · Randomised trial
4. Curcumin effects on blood lipid profile in a 6-month human study.2007 · Pharmacol Res · Randomised trial
5. Influence of Curcuma longa extract on cognitive function in mild cognitive impairment due to Alzheimer's disease: a single-arm, open-label, observational study.2026 · Front Nutr · Study in people
6. Diverse effects of a low dose supplement of lipidated curcumin in healthy middle aged people.2012 · Nutr J · Study in people
7. Curcumin nanoformulations for modulating neuroinflammation and oxidative stress in Alzheimer's disease: blood-brain barrier transport, formulation strategies and therapeutic applications.2026 · Inflammopharmacology · Review
8. Therapeutic potential of curcumin in Alzheimer's disease: Multi-target mechanisms of action, experimental and clinical evidence, safety aspects.2026 · Biomed Pharmacother · Review
9. Curcumin in Alzheimer's Disease: From Mechanistic Insights to Translational Challenges and Emerging Curcuminoid Strategies.2026 · Int J Mol Sci · Review
10. Curcumin, Coenzyme-Q10, and Bioactive Compounds in Ashwagandha Extract: Multi-Targeting Potential of Co-Administered Natural Health Compounds as Therapeutic and Preventative Interventions in Alzheimer's and Parkinson's Disease Models.2026 · Nutrients · Review
11. Translational Feasibility of Curcumin for Treatment of Alzheimer's Disease: A Critical Appraisal of Clinical Challenges.2026 · Antioxidants (Basel) · Review
12. Oxidative-stress-responsive polymeric nanocarriers for Alzheimer's disease: emerging antioxidant strategies using NAC and curcumin.2026 · J Biomater Sci Polym Ed · Review
13. Turmeric nanovesicles loaded with vitamins C and E attenuate oxidative stress and improve cognitive outcomes in rats with memory deficits.2026 · Ther Deliv · In animals
14. HSP90 is involved in curcumin-mediated inhibition of tau aggregation.2026 · Biochem Biophys Res Commun · In animals
15. Integrative systems pharmacology and experimental Assessment of hyaluronic Acid-Curcumin conjugate in an Alzheimer's disease model.2026 · Comput Biol Med · In animals
16. Dual protective role of curcumin- encapsulated chitosan nanoparticles against gastric and neural injury in a rat model of gut-brain axis dysfunction: a histological and biochemical study.2026 · Naunyn Schmiedebergs Arch Pharmacol · In animals
17. Chitosan-curcumin nanoparticles: a potential nano-therapeutic for cognitive restoration in a streptozotocin-induced rat model of Alzheimer's disease.2026 · Inflammopharmacology · In animals
18. Protective effects of curcumin and resveratrol on neurodegeneration and cognitive dysfunction in a streptozotocin-induced alzheimer rat model.2026 · Sci Rep · In animals
19. Unraveling the structure-activity relationships of organometallic ferrocene-pyrazole and ferrocene-pyrimidine curcumin analogues in amyloid-β aggregation and glioblastoma treatment.2025 · Sci Rep · In the lab
20. Curcumin-loaded PEG-functionalized carbon nanotubes: a novel strategy for Alzheimer's management.2025 · Ther Deliv · In the lab
21. Magnetic Levitational Assembly of Differentiated SH-SY5Y Cells for Aβ-Induced 3D Alzheimer's Disease Modeling and Curcumin Screening.2025 · Macromol Biosci · In the lab
22. Design and in vitro evaluation of curcumin-loaded PLGA nanoparticle-embedded sodium alginate/gelatin 3D printed scaffolds for Alzheimer's disease.2024 · Int J Biol Macromol · In the lab
23. Effect of Curcumin on Cognitive Behavior and Pathological Characteristics of the Hippocampus in Mice with Inherent Alzheimer's Disease.2023 · Bull Exp Biol Med · RetractedRetracted
24. Preservation of dendritic spine morphology and postsynaptic signaling markers after treatment with solid lipid curcumin particles in the 5xFAD mouse model of Alzheimer's amyloidosis.2021 · Alzheimers Res Ther · RetractedRetracted
25. Neuron tau-targeting biomimetic nanoparticles for curcumin delivery to delay progression of Alzheimer's disease.2020 · J Nanobiotechnology · RetractedRetracted
26. Solid lipid curcumin particles provide greater anti-amyloid, anti-inflammatory and neuroprotective effects than curcumin in the 5xFAD mouse model of Alzheimer's disease.2018 · BMC Neurosci · RetractedRetracted
27. Curcumin Exerts Effects on the Pathophysiology of Alzheimer's Disease by Regulating PI(3,5)P2 and Transient Receptor Potential Mucolipin-1 Expression.2017 · Front Neurol · RetractedRetracted
28. α-Halogenated Curcumins Enhance the Binding Affinity and Induced Structural Alterations to Amyloid-β Protein in Alzheimer's Disease.2026 · Int J Mol Sci · Other paper
29. Correction: A comparative study of dietary curcumin, nanocurcumin, and other classical amyloid‑binding dyes for labeling and imaging of amyloid plaques in brain tissue of 5×-familial Alzheimer's disease mice.2026 · Histochem Cell Biol · Other paper
30. Short-term Efficacy of Commercial Curcumin Nanomicelle on Cognition, Oxidative Stress and Choline Esterase in Alzheimer's Disease.2025 · Basic Clin Neurosci · Other paper
31. In Vitro Regulation of Amyloid production in Alzheimer's Disease via Curcumin-Loaded Silver Nanoparticles with Antioxidant and Acetylcholinesterase-Inhibiting Properties.2025 · Mol Neurobiol · Other paper