Supplements · Diets
exogenous ketones inhibits NLRP3 inflammasome
In plain terms: Do ketones switch off NLRP3, a key inflammation trigger?
Insufficient(Laboratory findings not confirmed in people) Supplements 🔬 Includes disconfirming
Part of: 🧪 exogenous ketones
RefutedContestedStrong support
consensus score 0.41
⚖️ Thin evidence — read the needle loosely. The score shows which way the studies lean, but there are too few independent, high-quality ones to place it firmly. Expect this to move as better evidence arrives.
Not in people. The acid form switches NLRP3 off in cells and mice, but the two human tests found no inhibition, or the opposite, and the salt sold in supplements appears inert.
🧭 Read this score with how it was built in mindLab and animal results no longer outvote a human study that found nothing
Thirteen cell and animal studies support it; the two human tests found no inhibition, and one found the opposite.
📅 Last reviewed: 2026-07-15 ⓘ
Evidence ladder
How far up the ladder this claim has climbed. A high consensus on a low rung means "consistent so far," not "proven in people."
Top evidence so far: Human trials (RCT / n-of-1)
MechanismIn-vitroAnimalObservationalRCTMeta-analysis
How the studies fall
13 support 2 contradict 1 tested null 4 mixed · 20 sources, 14 independent groups
What the evidence shows
BHB inhibits the NLRP3 inflammasome in cells and mice - but only the protonated ACID form; sodium-BHB (ketone salt) appears inert unless the medium is acidified. The two human tests found no inhibition (a ketone-ester crossover RCT) or the opposite (an acute ketone-supplement study), so the effect is not established in people.
The evidence (24)
| Source | Grade | Stance | Quality | Finding |
|---|---|---|---|---|
| Li Y, Liu SQ, Chu C, Yang J 2026 · iScience | observational | supports | low | Review states ketone bodies confer cardioprotection via histone Kbhb, NLRP3 inflammasome suppression, and GPR109A activation in cardiac hypertrophy/heart failure. |
| Deora V, Albornoz EA, Zhu K, Woodruff TM, Gordon R 2017 · J Neuroimmune Pharmacol | in-vitro | mixed | moderate | BHB blocked ATP/MSU microglial inflammasome but NOT synuclein-fibril NLRP3; activator-specific |
| Gentili V, Schiuma G, Dilliraj LN, Beltrami S, Rizzo S, Lara D, Giovannini PP, Marti M, Bortolotti D, Trapella C, Narducci M, Rizzo R 2024 · Nutrients | in-vitro | supports | moderate | Human HMC3 microglia + novel ketone diester DAG-MAG-BHB: inhibited NLRP3 inflammasome activation under low-glucose/beta-amyloid stress, preserved viability/ATP. |
| Bai YP, Zhang Y, Chen ZY, Li K, Wang DG, Wan SJ, Zhang CW, Sun Y, Li ZC, Lv K, Zha L, Kong X 2025 · Redox Biol | animal | supports | moderate | BHB ameliorates LPS liver injury via inflammasome inhibition (rodent); form-agnostic |
| Zhang Q, Zheng M, Sun W, Loers G, Wen M, Wang Q, Zheng X, Siebert HC, Zhang R, Zhang N 2025 · Food & Function | animal | supports | moderate | Ketogenic diet inhibits microglial NLRP3 in EAE via HDAC3/mitophagy, reducing demyelination |
| Parveen K, Salman M, Mirzahosseini G, Parveen A, Ishrat T, Puchowicz MA 2025 · Mol Neurobiol | animal | supports | moderate | KD inhibits TXNIP/NLRP3 via HIF-1a/IL-10 in mouse stroke; no neuroprotection in NLRP3-KO (dependence) |
| Fastiggi VA, Mank MM, Caporizzo MA, Poynter ME 2026 · American journal of physiology. Cell physiology | in-vitro | mixed | moderate | Human bronchial smooth muscle cells + mouse lung slices: BHB suppressed IL-1B-induced cytokine production and contraction via FFAR3, not stated as NLRP3-mediated. |
| Luo Y, Gao H, Wang M, Wang Z, Jin Z, Song N, Liu Z, Yang X 2026 · PloS one | animal | mixed | low | Mouse AIT model: ketogenic diet (endogenous ketosis) suppressed NLRP3/ASC/Caspase-1 gene expression and HMGB1/NLRP3 signaling, reduced IL-1B and other cytokines. |
| Mank MM, Zoller KA, Fastiggi VA, Ather JL, Poynter ME 2026 · (in-vitro) | in-vitro | supports | high | NaBHB inert; only acid BHBA inhibits NLRP3 in mouse macrophages+human PBMC; FFAR3 enhances |
| Yang W, Pang N, He X 2025 · Lipids in health and disease | observational | supports | low | PCOS review: states BHB 'directly suppresses' the NLRP3 inflammasome as one of several anti-inflammatory mechanisms of ketogenic diet. |
| Sander NH, Soni S, Wilkinson CM, Khiabani E, Dyck JRB, Colbourne F 2024 · PLOS ONE | animal | supports | moderate | Rat ICH model: subQ racemic Na+-BHB (sodium salt, 250mg/kg b.i.d.) reduced ipsilateral Il1b/Tnfa/Mcp1 transcripts at day 3 (p=0.0210/0.0108/0.0473) but not Cx3cl1 (p=0.2216); authors' own NLRP3-inhibition interpretation is hedged ('suggest...may'), no direct NLRP3/caspase-1/IL-1b-protein assay. Randomized, blinded, a-priori-powered (n=7-8/group). Lesion volume (primary endpoint), edema, and day-28 neuro deficits all null in this same paper (off-object, see candidates). |
| Wang P, Liang L, Tan Y, Ge Q, Huang Z, Yu T 2026 · Journal of the American Heart Association | animal | mixed | low | Rat cardiac-arrest model: BHB treatment (form unspecified) reduced serum/brain TNF-a and IL-1B alongside neuroprotection; NLRP3 not directly assayed. |
| Ari C, D'Agostino DP 2025 · Pharmaceuticals (Basel, Switzerland) | animal | tested-null | low | Chronic rat study: ketone SALTS (KS) preserved liver histology/lower TNF-a, while ketone ester (KE) and precursor (BD) caused steatosis/inflammation; NLRP3 not assessed. |
| Hirata Y, Shimazaki S, Suzuki S, Henmi Y, Komiyama H, Kuwayama T, Iwata H, Karasawa T, Takahashi M, Takahashi H, Shirasuna K 2021 · J Reprod Immunol | animal | supports | moderate | BHB suppresses NLRP3-mediated placental IL-1b and LPS-induced fetal absorption in mice + human trophoblast |
| Youm YH, Nguyen KY, Grant RW, Goldberg EL, Bodogai M, Kim D, D'Agostino D, Planavsky N, Lupfer C, Kanneganti TD, Kang S, Horvath TL, Fahmy TM, Crawford PA, Biragyn A, Alnemri E, Dixit VD 2015 · Nat Med | in-vitro | supports | moderate | Youm 2015 NatMed BHB blocks NLRP3 in macrophages/mice; landmark general mechanism |
| Neudorf H, Myette-Côté É, P Little J 2020 · Nutrients | RCT | contradicts | moderate | Randomised double-blind placebo-controlled crossover, n=11 adults with obesity, ketone monoester 482 mg/kg (blood BHB 0.21 -> 2.96 mM) then 75 g OGTT. Direct NLRP3 readouts null: LPS-stimulated monocyte caspase-1 'no differences between conditions'; LPS-stimulated IL-1beta secretion at 60 min 8.8 +/- 8.1 pg/mL ketone vs 9.8 +/- 9.2 placebo, only a main effect of time. Authors: 'elevated beta-OHB did not inhibit NLRP3 inflammasome activation', contrary to animal/in-vitro work. Only plasma IL-1beta fell in the ketone arm (interaction p=0.01), which the authors call needing confirmation. Null on the object = contradicts. Earlier extract ('lowered NLRP3/IL-1b') misread the paper. |
| Zhang SJ, Li ZH, Zhang YD, Chen J, Li Y, Wu FQ, Wang W, Cui ZJ, Chen GQ 2021 · Adv Sci | animal | supports | moderate | Oral 3-HB ameliorates atherosclerosis via macrophage Gpr109a-mediated effect on NLRP3 inflammation |
| Kim SR, Lee SG, Kim SH, Kim JH, Choi E, Cho W, Rim JH, Hwang I, Lee CJ, Lee M, Oh CM, Jeon JY, Gee HY, Kim JH, Lee BW, Kang ES, Cha BS, Lee MS, Yu JW, Cho JW, Kim JS, Lee YH 2020 · Nat Commun | in-vitro | supports | moderate | SGLT2i raises serum BHB and suppresses macrophage NLRP3/IL-1b; high-BHB+low-insulin inhibits ex vivo |
| Goldberg EL, Asher JL, Molony RD, Shaw AC, Zeiss CJ, Wang C, Morozova-Roche LA, Herzog RI, Iwasaki A, Dixit VD 2017 · Cell Rep | in-vitro | supports | moderate | Goldberg 2017 BHB deactivates neutrophil NLRP3; no salt-vs-acid distinction |
| Neudorf H, Durrer C, Myette-Cote E, Makins C, O'Malley T, Little JP 2019 · Mol Nutr Food Res | n-of-1 | contradicts | moderate | Oral ketone supplement ACUTELY INCREASED monocyte NLRP3 markers in humans - opposite to cell-culture |
| Shippy DC, Wilhelm C, Viharkumar PA, Raife TJ, Ulland TK 2020 · J Neuroinflammation | animal | supports | moderate | Shippy 2020 5XFAD mice BHB cut plaque+caspase-1 via NLRP3. ANIMAL |
| Gong Y, Wei Y, Liu Y, Du T 2026 · Journal of translational medicine | observational | supports | low | Review: BHB regulates macrophages/T cells via NLRP3 inflammasome inhibition, HCAR2 activation, histone Kbhb; preclinical/early clinical evidence for autoimmune/inflammatory disease. |
| Shippy DC, Evered AH, Ulland TK 2025 · Immunological Reviews | mechanism | supports | moderate | Narrative review: 'Here, we review the role of the NLRP3 inflammasome and microglial ketone body metabolism in AD pathogenesis.' Highlights 'NLRP3 inflammasome inhibition by several ketone body therapies'. No own data; ketone salts not specifically tested. Review — zero weight. |
| Nomura M, Murad NF, Madhavan SS, Mu WC, Eap B, Garcia TY, Aguirre CG, Verdin E, Ellerby L, Furman D, Newman JC 2024 · Aging biology | in-vitro | supports | moderate | Human/mouse primary microglia: BHB inhibited LPS-induced inflammatory gene expression; authors note 'an acidic milieu resulting from BHB may be required' for the effect. |
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