{
  "dataset_name": "Hydrogen Water Reference Index",
  "dataset_version": "1.2",
  "publisher": "Holistix International",
  "project": "Holistix Open Biohacking Data Project",
  "canonical_page": "https://www.holistixintl.com/pages/hydrogen-water-reference-index",
  "source_register": "https://www.holistixintl.com/pages/open-biohacking-data-source-register",
  "methodology": "https://www.holistixintl.com/pages/open-biohacking-data-methodology",
  "last_updated": "2026-06-27",
  "disclaimer": "This dataset is for educational and informational purposes only. It is not medical advice, diagnosis, treatment guidance, disease-prevention guidance, dosing guidance, or a substitute for consultation with a qualified healthcare professional.",
  "fields": [
    "record_id",
    "topic",
    "reference_type",
    "plain_language_meaning",
    "safety_note",
    "source_type",
    "evidence_level",
    "claim_type",
    "medical_disclaimer_required",
    "commercial_relevance",
    "last_reviewed",
    "related_holistix_page",
    "related_product_category",
    "notes",
    "source_name",
    "source_url",
    "citation_note"
  ],
  "records": [
    {
      "record_id": "HOL-H2-REF-0001",
      "topic": "Molecular hydrogen",
      "reference_type": "Basic terminology",
      "plain_language_meaning": "Molecular hydrogen, written as H2, is a dissolved gas that may be present in hydrogen water. Hydrogen water should be described by measurable hydrogen concentration rather than vague wellness claims.",
      "safety_note": "Do not treat hydrogen water terminology as medical advice or disease guidance.",
      "source_type": "Educational terminology / chemistry context",
      "evidence_level": "Basic terminology",
      "claim_type": "Definition",
      "medical_disclaimer_required": "No",
      "commercial_relevance": "Hydrogen water bottles / hydrogen water devices / consumer wellness devices",
      "last_reviewed": "2026-06-26",
      "related_holistix_page": "https://www.holistixintl.com/pages/hydrogen-water-reference-index",
      "related_product_category": "Hydrogen water devices",
      "notes": "This row defines the term H2 without making health claims.",
      "source_name": "Hydrogen Water: Extra Healthy or a Hoax? A Systematic Review",
      "source_url": "https://www.mdpi.com/1422-0067/25/2/973",
      "citation_note": "Use as broad review support for defining hydrogen water as regular water with added molecular hydrogen gas. Do not use as a disease-treatment claim."
    },
    {
      "record_id": "HOL-H2-REF-0002",
      "topic": "Dissolved hydrogen concentration",
      "reference_type": "Measurement concept",
      "plain_language_meaning": "Dissolved hydrogen concentration describes how much molecular hydrogen is present in water, commonly reported in parts per billion or parts per million.",
      "safety_note": "Hydrogen concentration can change over time after production, especially with storage, heat, agitation, or an unsealed container.",
      "source_type": "Educational terminology / measurement context",
      "evidence_level": "Basic terminology / device specification",
      "claim_type": "Measurement concept",
      "medical_disclaimer_required": "No",
      "commercial_relevance": "Hydrogen water bottles / hydrogen water devices / consumer wellness devices",
      "last_reviewed": "2026-06-26",
      "related_holistix_page": "https://www.holistixintl.com/pages/hydrogen-water-reference-index",
      "related_product_category": "Hydrogen water devices",
      "notes": "Concentration values should include measurement context when possible.",
      "source_name": "Calculating The Dose Of H2 - Molecular Hydrogen Institute",
      "source_url": "https://molecularhydrogeninstitute.org/calculating-the-dose-of-h2/",
      "citation_note": "Use for dissolved hydrogen concentration terminology, including ppm and mg/L measurement context. Keep as measurement education, not dosing guidance."
    },
    {
      "record_id": "HOL-H2-REF-0003",
      "topic": "PPB and PPM",
      "reference_type": "Measurement units",
      "plain_language_meaning": "PPB means parts per billion and PPM means parts per million. These units are often used to describe dissolved hydrogen concentration in water.",
      "safety_note": "PPB and PPM should not be confused with ORP or unrelated water-quality claims.",
      "source_type": "Educational terminology / measurement-unit context",
      "evidence_level": "Basic terminology",
      "claim_type": "Measurement concept",
      "medical_disclaimer_required": "No",
      "commercial_relevance": "Hydrogen water bottles / hydrogen water devices / consumer wellness devices",
      "last_reviewed": "2026-06-26",
      "related_holistix_page": "https://www.holistixintl.com/pages/hydrogen-water-reference-index",
      "related_product_category": "Hydrogen water devices",
      "notes": "1 ppm equals 1000 ppb.",
      "source_name": "Calculating The Dose Of H2 - Molecular Hydrogen Institute",
      "source_url": "https://molecularhydrogeninstitute.org/calculating-the-dose-of-h2/",
      "citation_note": "Use for ppm, ppb, and mg/L unit relationships, including the practical conversion that 1 ppm equals 1000 ppb."
    },
    {
      "record_id": "HOL-H2-REF-0004",
      "topic": "ORP",
      "reference_type": "Measurement caution",
      "plain_language_meaning": "ORP means oxidation-reduction potential. It is sometimes used in marketing, but ORP is not the same thing as dissolved molecular hydrogen concentration.",
      "safety_note": "Do not use ORP alone as proof of hydrogen concentration, product quality, or health benefit.",
      "source_type": "Consumer comparison context / buyer education",
      "evidence_level": "Buyer education / measurement caution",
      "claim_type": "Buyer education",
      "medical_disclaimer_required": "No",
      "commercial_relevance": "Hydrogen water bottles / hydrogen water devices / consumer wellness devices",
      "last_reviewed": "2026-06-26",
      "related_holistix_page": "https://www.holistixintl.com/pages/hydrogen-water-reference-index",
      "related_product_category": "Hydrogen water devices",
      "notes": "ORP can be affected by multiple factors and should not replace H2 concentration measurement.",
      "source_name": "ORP should not be used to estimate or compare concentrations of aqueous H2",
      "source_url": "https://www.frontiersin.org/journals/food-science-and-technology/articles/10.3389/frfst.2022.1007001/full",
      "citation_note": "Use for the caution that ORP should not be used alone to estimate or compare dissolved molecular hydrogen concentration."
    },
    {
      "record_id": "HOL-H2-REF-0005",
      "topic": "Electrolysis",
      "reference_type": "Device mechanism",
      "plain_language_meaning": "Many hydrogen water bottles generate hydrogen through electrolysis, where electrical current is used to separate water molecules and generate hydrogen gas.",
      "safety_note": "Consumers should follow manufacturer instructions, cleaning guidance, and water-type recommendations.",
      "source_type": "Device specification / manufacturer-instruction context",
      "evidence_level": "Device specification",
      "claim_type": "Usage context",
      "medical_disclaimer_required": "No",
      "commercial_relevance": "Hydrogen water bottles / hydrogen water devices / consumer wellness devices",
      "last_reviewed": "2026-06-26",
      "related_holistix_page": "https://www.holistixintl.com/pages/hydrogen-water-reference-index",
      "related_product_category": "Hydrogen water devices",
      "notes": "This row describes a device mechanism, not a medical effect.",
      "source_name": "Electrolytic hydrogen-generating bottle supplies drinking water with hydrogen molecules",
      "source_url": "https://pmc.ncbi.nlm.nih.gov/articles/PMC8130662/",
      "citation_note": "Use as device-mechanism context for electrolysis-based hydrogen-generating bottles and measurement of dissolved hydrogen. Do not use as a product-performance claim."
    },
    {
      "record_id": "HOL-H2-REF-0006",
      "topic": "Hydrogen retention",
      "reference_type": "Storage context",
      "plain_language_meaning": "Hydrogen gas can escape from water over time, especially in open containers. Retention may depend on container design, pressure, seal quality, time, and temperature.",
      "safety_note": "Drink timing and storage should follow manufacturer instructions and should not be treated as medical guidance.",
      "source_type": "Educational terminology / storage context",
      "evidence_level": "Buyer education / device specification",
      "claim_type": "Usage context",
      "medical_disclaimer_required": "No",
      "commercial_relevance": "Hydrogen water bottles / hydrogen water devices / consumer wellness devices",
      "last_reviewed": "2026-06-26",
      "related_holistix_page": "https://www.holistixintl.com/pages/hydrogen-water-reference-index",
      "related_product_category": "Hydrogen water devices",
      "notes": "Hydrogen retention is a practical consumer-context topic.",
      "source_name": "Hydrogen Water: Extra Healthy or a Hoax? A Systematic Review",
      "source_url": "https://www.mdpi.com/1422-0067/25/2/973",
      "citation_note": "Use for general hydrogen-water context including hydrogen gas dissolved in water and the practical issue that dissolved hydrogen may persist only for a limited time depending on conditions."
    },
    {
      "record_id": "HOL-H2-REF-0007",
      "topic": "Testing strips and meters",
      "reference_type": "Measurement caution",
      "plain_language_meaning": "Some consumers use test drops, strips, or meters to estimate dissolved hydrogen, but testing methods vary in accuracy and interpretation.",
      "safety_note": "Testing results should be interpreted carefully and compared only when methods are similar.",
      "source_type": "Consumer comparison context / measurement caution",
      "evidence_level": "Buyer education / measurement caution",
      "claim_type": "Device comparison",
      "medical_disclaimer_required": "No",
      "commercial_relevance": "Hydrogen water bottles / hydrogen water devices / consumer wellness devices",
      "last_reviewed": "2026-06-26",
      "related_holistix_page": "https://www.holistixintl.com/pages/hydrogen-water-reference-index",
      "related_product_category": "Hydrogen water devices",
      "notes": "Testing method transparency is important for comparison.",
      "source_name": "Understanding Hydrogen Water Testing Methods - Molecular Hydrogen Institute",
      "source_url": "https://molecularhydrogeninstitute.org/understanding-hydrogen-water-testing-methods/",
      "citation_note": "Use for consumer testing-method context, including reagent methods, meters, and the need to interpret hydrogen-water tests carefully."
    },
    {
      "record_id": "HOL-H2-REF-0008",
      "topic": "Device transparency",
      "reference_type": "Buyer caution",
      "plain_language_meaning": "Useful hydrogen water device documentation should disclose measurable hydrogen concentration, generation method, container design, cleaning guidance, and usage instructions.",
      "safety_note": "Be cautious of vague claims that do not disclose concentration, testing method, or device specifications.",
      "source_type": "Consumer comparison context / buyer education",
      "evidence_level": "Buyer education / device specification",
      "claim_type": "Device comparison",
      "medical_disclaimer_required": "No",
      "commercial_relevance": "Hydrogen water bottles / hydrogen water devices / consumer wellness devices",
      "last_reviewed": "2026-06-26",
      "related_holistix_page": "https://www.holistixintl.com/pages/hydrogen-water-reference-index",
      "related_product_category": "Hydrogen water devices",
      "notes": "This row supports transparent comparison without making medical claims.",
      "source_name": "Understanding Hydrogen Water Testing Methods - Molecular Hydrogen Institute",
      "source_url": "https://molecularhydrogeninstitute.org/understanding-hydrogen-water-testing-methods/",
      "citation_note": "Use to support transparency around testing method, concentration reporting, and measurement limitations when comparing hydrogen-water devices."
    },
    {
      "record_id": "HOL-H2-REF-0009",
      "topic": "Health claims",
      "reference_type": "Claim boundary",
      "plain_language_meaning": "Hydrogen water products are often discussed in wellness contexts, but educational references should avoid disease, treatment, cure, prevention, or guaranteed-result claims.",
      "safety_note": "Hydrogen water should not be presented as a treatment, cure, prevention tool, or substitute for medical care.",
      "source_type": "Safety guidance / claim-boundary context",
      "evidence_level": "Consumer safety caution / commercial separation",
      "claim_type": "Claim boundary",
      "medical_disclaimer_required": "Yes",
      "commercial_relevance": "Hydrogen water bottles / hydrogen water devices / consumer wellness devices",
      "last_reviewed": "2026-06-26",
      "related_holistix_page": "https://www.holistixintl.com/pages/hydrogen-water-reference-index",
      "related_product_category": "Hydrogen water devices",
      "notes": "This row helps separate educational terminology from medical or disease claims.",
      "source_name": "Hydrogen Water: Extra Healthy or a Hoax? A Systematic Review",
      "source_url": "https://www.mdpi.com/1422-0067/25/2/973",
      "citation_note": "Use as broad research-context support while keeping Holistix language conservative and avoiding disease, treatment, cure, prevention, or guaranteed-result claims."
    },
    {
      "record_id": "HOL-H2-REF-0010",
      "topic": "Cleaning and maintenance",
      "reference_type": "Use context",
      "plain_language_meaning": "Hydrogen water devices may require cleaning, drying, filter replacement, or maintenance depending on device design and manufacturer instructions.",
      "safety_note": "Follow manufacturer cleaning instructions and avoid using damaged, dirty, or malfunctioning devices.",
      "source_type": "Manufacturer instruction / consumer safety context",
      "evidence_level": "Consumer safety caution / device specification",
      "claim_type": "Usage context",
      "medical_disclaimer_required": "Yes",
      "commercial_relevance": "Hydrogen water bottles / hydrogen water devices / consumer wellness devices",
      "last_reviewed": "2026-06-26",
      "related_holistix_page": "https://www.holistixintl.com/pages/hydrogen-water-reference-index",
      "related_product_category": "Hydrogen water devices",
      "notes": "Cleaning and maintenance are practical safety and device-longevity topics.",
      "source_name": "Electrolytic hydrogen-generating bottle supplies drinking water with hydrogen molecules",
      "source_url": "https://pmc.ncbi.nlm.nih.gov/articles/PMC8130662/",
      "citation_note": "Use as electrolysis-device safety context, especially because the study measured byproducts such as chlorine and ozone. Keep cleaning and maintenance guidance tied to manufacturer instructions."
    }
  ]
}