Badania peer-reviewed · PubMed · PMC · MDPI · Nature Mechanizmy potwierdzone w literaturze En toute transparence — les preuves comme les limites Badania peer-reviewed · PubMed · PMC · MDPI · Nature Mechanizmy potwierdzone w literaturze
Revue de la littérature scientifique

Kangen Water in peer-reviewed research

What does the scientific literature actually show about electrolyzed reduced water (ERW) and hydrogen-rich water (HRW)? We present the mechanisms, clinical studies — and limitations. No hype.

20+
Études citées
8
Domaines cliniques
1200+
Publikacji o H₂ od 2007

Safety & Limitations

There is a lot of confusion around Kangen Water. Some call it a marketing gimmick, while others attribute miraculous effects without citing any sources. The truth is more concrete — and far more interesting.

The paper "Hydrogen Water: Extra Healthy or a Hoax?" (PMC, 2024) summarizes the literature: in many areas the effects are consistent and reproducible, but standardization of H₂ concentration, intervention length and population characteristics require unification. Critical reading of science is not an argument against — it is an argument for an honest approach.

ERW — Electrolyzed Reduced Water

Electrochemically ionized water. The most common term in research papers on water with negative redox potential (ORP) and mildly alkaline pH.

HRW — Hydrogen-Rich Water

Hydrogen water — obtained both by electrolysis and by dissolving pure H₂ under pressure. In recent years, this term has dominated clinical research.

EHW / AEW

Electrolyzed Hydrogen Water / Alkaline Electrolyzed Water — used interchangeably with ERW, especially in Korean and Japanese papers.

Conclusion pratique : si vous voulez vérifier les preuves vous-même, recherchez dans PubMed et PMC les termes "electrolyzed reduced water", "hydrogen rich water" ainsi que "molecular hydrogen". Le terme « Kangen water » renvoie surtout des publications étudiant des appareils de marque (p. ex. Enagic), mais la littérature scientifique le considère comme un sous-ensemble de l'ERW/HRW.

Safety & Limitations

The section omitted in marketing, but present in scientific reviews — particularly in Review II from PMC (2022).

H₂

Negative Redox Potential

ORP down to −810 mV means the ability to donate electrons — the opposite of tap water (+200 to +600 mV). Supports cell regeneration and protection.

pH

Negative Redox Potential

ORP down to −810 mV means the ability to donate electrons — the opposite of tap water (+200 to +600 mV). Supports cell regeneration and protection.

ORP

Negative Redox Potential

ORP down to −810 mV means the ability to donate electrons — the opposite of tap water (+200 to +600 mV). Supports cell regeneration and protection.

Une nuance importante : La revue I (PMC, 2022) suggère que de façon isolée le principal facteur actif est l'H₂. Cependant, la revue II et des études cliniques ultérieures montrent que le pH et l'ORP ont un rôle modulateur — surtout à long terme et dans le contexte de la biodisponibilité.

Safety & Limitations

The section omitted in marketing, but present in scientific reviews — particularly in Review II from PMC (2022).

OASIS-ERW : un essai randomisé, en double aveugle, contrôlé contre placebo RCT 2020

Study of kitchen electrolysis devices. Effective pesticide removal from lemons and vegetables — comparison with traditional methods.

Lire sur PMC →
Antioxidant effects of continuous intake of electrolyzed hydrogen water Heliyon 2022

Study of kitchen electrolysis devices. Effective pesticide removal from lemons and vegetables — comparison with traditional methods.

Lire sur Cell.com →

Safety & Limitations

The section omitted in marketing, but present in scientific reviews — particularly in Review II from PMC (2022).

Consommation pendant 24 semaines d'HRW à haute concentration en H₂ RCT 2020

Study of kitchen electrolysis devices. Effective pesticide removal from lemons and vegetables — comparison with traditional methods.

Lire sur PMC →
EHW w (pre)zespole metabolicznym RCT 2023, n=181

Study of kitchen electrolysis devices. Effective pesticide removal from lemons and vegetables — comparison with traditional methods.

Lire sur MDPI →
HRW a profil lipidowy — metaanaliza Meta-analiza 2024

Study of kitchen electrolysis devices. Effective pesticide removal from lemons and vegetables — comparison with traditional methods.

Lire le PDF →

Safety & Limitations

The section omitted in marketing, but present in scientific reviews — particularly in Review II from PMC (2022).

L'HRW réduit la graisse hépatique RCT pilot 2019

Study of kitchen electrolysis devices. Effective pesticide removal from lemons and vegetables — comparison with traditional methods.

Lire sur PubMed →
Effets biologiques de l'HRW chez les patients atteints de NAFLD RCT 2022

Study of kitchen electrolysis devices. Effective pesticide removal from lemons and vegetables — comparison with traditional methods.

Lire sur PMC →

Safety & Limitations

The section omitted in marketing, but present in scientific reviews — particularly in Review II from PMC (2022).

EARW pH 9,5 dans la dyspepsie fonctionnelle RCT 2023

Study of kitchen electrolysis devices. Effective pesticide removal from lemons and vegetables — comparison with traditional methods.

Lire sur MDPI →
Eau alcaline réduite dans le SII-D RCT 2018

Study of kitchen electrolysis devices. Effective pesticide removal from lemons and vegetables — comparison with traditional methods.

Lire sur PLOS ONE →

Safety & Limitations

The section omitted in marketing, but present in scientific reviews — particularly in Review II from PMC (2022).

HRW a regeneracja po HIFT RCT 2024

Study of kitchen electrolysis devices. Effective pesticide removal from lemons and vegetables — comparison with traditional methods.

Lire sur Frontiers →
Eau alcaline et viscosité sanguine après déshydratation RCT 2016

Study of kitchen electrolysis devices. Effective pesticide removal from lemons and vegetables — comparison with traditional methods.

Lire sur JISSN →

Safety & Limitations

The section omitted in marketing, but present in scientific reviews — particularly in Review II from PMC (2022).

Revue clinique de l'H₂ en oncologie Revue 2024

Study of kitchen electrolysis devices. Effective pesticide removal from lemons and vegetables — comparison with traditional methods.

Lire sur MDPI →
HRW et hépatotoxicité dans le CCR Prospektywne 2017

Study of kitchen electrolysis devices. Effective pesticide removal from lemons and vegetables — comparison with traditional methods.

Lire sur PubMed →

Safety & Limitations

The section omitted in marketing, but present in scientific reviews — particularly in Review II from PMC (2022).

ERW zmniejsza stres oksydacyjny podczas HD Kliniczne 2003

Study of kitchen electrolysis devices. Effective pesticide removal from lemons and vegetables — comparison with traditional methods.

Lire sur PubMed →
ERW a hemoliza i anemia w HD Kliniczne 2006

Study of kitchen electrolysis devices. Effective pesticide removal from lemons and vegetables — comparison with traditional methods.

Lire sur PubMed →
E-HD : H₂ dans le dialysat — revue et données Sci. Reports 2018

Study of kitchen electrolysis devices. Effective pesticide removal from lemons and vegetables — comparison with traditional methods.

Lire sur Nature →
pH 11.5

Strong Kangen — cleaning food of pesticides

The most practical and underappreciated use of an Enagic ionizer. Strong Kangen water at pH 11.5 is an effective tool for washing vegetables and fruit of pesticide residues and preservative waxes — and this is one of the best-documented areas in ionized water literature.

The mechanism — why regular water is not enough

Most modern pesticides (organophosphates, pyrethroids, glyphosate-based herbicides) are hydrophobic — they repel water. Manufacturers add oils and waxes to them, which cling to the skin of vegetables and fruit. Regular tap water removes only 10–40% of residues.

Highly alkaline water acts differently. It functions as a natural emulsifier — breaking down the fats and waxes in which pesticides are trapped. At the same time, alkaline hydrolysis degrades many active substances into harmless forms.

What the research shows

Several research groups have studied the effectiveness of ionized water in removing pesticides from vegetables and fruit:

Effects of electrolyzed water treatment on pesticide removal — Food Chemistry 2021

Study of kitchen electrolysis devices. Effective pesticide removal from lemons and vegetables — comparison with traditional methods.

Lire sur PubMed →
Reduction of Pesticide Residues on Fresh Vegetables — J. Food Science Hao 2011

Study of kitchen electrolysis devices. Effective pesticide removal from lemons and vegetables — comparison with traditional methods.

Lire sur Wiley →
Electrolyzed Water Kitchen Devices — pesticide removal PMC 2024

Study of kitchen electrolysis devices. Effective pesticide removal from lemons and vegetables — comparison with traditional methods.

Lire sur PMC →

Concrete numbers — what you can gain

10–40%
réduction des pesticides — eau du robinet
40–90%
réduction des pesticides — eau alcaline
86%
réduction de l'acéphate (épinards, 30 min)
≤91%
réduction des pesticides (chou, 20 min)

In practice — how to wash vegetables with Strong Kangen water

  1. OASIS-ERW RCT (2020). pmc.ncbi.nlm.nih.gov/articles/PMC7402115
  2. Antioxidant effects of continuous intake of EHW (2022). cell.com/heliyon
  3. 24-Week High-Concentration HRW (2020). PMC7102907
  4. EHW in (pre-)metabolic syndrome (2023). MDPI Antioxidants
Uwaga praktyczna: tous les pesticides ne se comportent pas de la même manière. Le glyphosate — bien qu'il subisse une hydrolyse alcaline — pénètre en grande partie la plante de façon systémique et ne peut être éliminé par aucun lavage externe. Le lavage à pH 11,5 réduit les résidus powierzchniowe et c'est ce que montrent les études citées.

Safety & Limitations

The section omitted in marketing, but present in scientific reviews — particularly in Review II from PMC (2022).

Insuffisance rénale : à un pH de l'eau >9,8, certains patients dont la fonction rénale est altérée peuvent développer une hyperkaliémie dangereuse. Les personnes atteintes de maladies rénales doivent consulter leur médecin avant d'introduire l'ERW.
Seuil d'efficacité de l'H₂ : les études cliniques montrent un effet biologique à une concentration de ≥0,5 ppm rozpuszczonego H₂. En dessous de ce seuil, les preuves d'effets mesurables sont faibles. L'hydrogène s'échappe — buvez l'eau fraîchement versée.
Taille des échantillons : de nombreuses études citées sont de petits ECR (n < 100). De plus grands essais multicentriques sont nécessaires. Les signaux présentés sont prometteurs mais non concluants.

What the critical systematic review (2024) says

The paper "Hydrogen Water: Extra Healthy or a Hoax?" (PMC, 2024) summarizes the literature: in many areas the effects are consistent and reproducible, but standardization of H₂ concentration, intervention length and population characteristics require unification. Critical reading of science is not an argument against — it is an argument for an honest approach.

Lire la revue 2024 →

Want to read a shorter, practical version on washing vegetables?

I have a blog article for you: Strong Kangen pH 11.5 — how to wash pesticides off vegetables. What science says. — a short, practical summary with a step-by-step procedure.

Have questions about the research or ionizer selection?

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Full source list (links to publications)

All cited papers come from peer-reviewed databases: PubMed, PMC, MDPI, Nature, PLOS, ScienceDirect, Frontiers.

  1. OASIS-ERW RCT (2020). pmc.ncbi.nlm.nih.gov/articles/PMC7402115
  2. Antioxidant effects of continuous intake of EHW (2022). cell.com/heliyon
  3. 24-Week High-Concentration HRW (2020). PMC7102907
  4. EHW in (pre-)metabolic syndrome (2023). MDPI Antioxidants
  5. HRW and lipids meta-analysis (2024). Brieflands IJEM PDF
  6. NAFLD pilot RCT (2019). PubMed 30982748
  7. NAFLD RCT (2022). PMC9598482
  8. FD RCT (2023). MDPI Processes
  9. IBS-D RCT (2018). PLOS ONE
  10. HRW and recovery after HIFT (2024). Frontiers in Physiology
  11. Blood viscosity and alkaline water (2016). JISSN
  12. Oncology — clinical review of H₂ (2024). MDPI Molecules
  13. HRW in CRC — hepatotoxicity (2017). PubMed 28660054
  14. HD — ERW oxidative stress (2003). PubMed 12569372
  15. HD — ERW hemolysis/anemia (2006). PubMed 16738682
  16. E-HD — Sci Rep review (2018). Nature Sci. Reports
  17. Systematic review HRW (2024). PMC10816294
  18. ERW Review I — mechanisms (2022). PMC9738607
  19. ERW Review II — safety (2022). PMC9736533
  20. Alkaline Electrolyzed Water — review (2022). LWW IJEH
  21. Pesticide removal — fresh-cut vegetables (2021). PubMed 33714792
  22. Hao — Pesticide Residues on Vegetables (2011). Wiley J. Food Sci.
  23. Electrolyzed Water Kitchen Devices (2024). PMC11643934

This page is for informational and educational purposes. It does not replace medical advice. In the case of chronic diseases — especially kidney disease — consult your treating physician before starting ionized water.