{
  "schema": "vedokrok.public-item.v1",
  "release_id": "MHC-RPUB-20260920-75ad787a",
  "url": "/knowledge/count-the-actual-alcohol-not-just-the-number-of-glasses",
  "id": "MHC-D-RESEARCH-1058",
  "version": "0.1.0",
  "title": "Count the actual alcohol, not just the number of glasses",
  "summary": "One glass is a container, not a fixed quantity of alcohol.",
  "kind": "protocol",
  "body": "Read the volume and alcohol by volume together. Under the UK convention, units equal millilitres multiplied by ABV percentage and divided by 1,000. Keep the convention explicit: a standard drink in another country may represent a different quantity.",
  "limits": [
    "Do not use this calculation to decide when driving is safe. If you may be physically dependent, stopping suddenly can be dangerous; seek medical support rather than attempting an unsupported detox."
  ],
  "topics": [
    "life-04-prevention"
  ],
  "intents": [],
  "source_ids": [
    "RS-110F39860B777AD6",
    "RS-4213497D802AEA36"
  ],
  "evidence": [
    {
      "claim": "In the UK convention, alcohol units are calculated as volume in millilitres multiplied by ABV percentage and divided by 1,000.",
      "source_id": "RS-110F39860B777AD6",
      "role": "supports",
      "note": "This quantifies alcohol using one convention; it is not a safe allowance or a driving-clearance calculation.",
      "locator": "Calculating units"
    },
    {
      "claim": "NHS warns that suddenly stopping alcohol can be harmful for someone who is physically dependent and advises professional support.",
      "source_id": "RS-4213497D802AEA36",
      "role": "supports",
      "note": "Dependence and withdrawal risk require clinical judgment; this card provides no home detoxification plan.",
      "locator": "Stopping drinking and physical dependence"
    }
  ],
  "use_when": [
    "You want an accurate account of alcohol consumed."
  ],
  "avoid_when": [
    "Do not use this calculation to decide when driving is safe. If you may be physically dependent, stopping suddenly can be dangerous; seek medical support rather than attempting an unsupported detox."
  ],
  "example": "A hypothetical 500 ml drink at 5% ABV contains 2.5 UK units. Counting it merely as one drink hides that quantity.",
  "check": "The record describes volume, strength and unit convention without turning the result into a safe allowance.",
  "steps": [
    "Record the actual volume and labelled strength, including refills.",
    "Use one named unit convention consistently.",
    "Discuss concerns or difficulty cutting down with an appropriate healthcare service."
  ],
  "sources": [
    {
      "id": "RS-110F39860B777AD6",
      "title": "Calculating alcohol units",
      "url": "https://www.nhs.uk/live-well/alcohol-advice/calculating-alcohol-units/"
    },
    {
      "id": "RS-4213497D802AEA36",
      "title": "Alcohol support",
      "url": "https://www.nhs.uk/live-well/alcohol-advice/alcohol-support/"
    }
  ],
  "relations": [
    {
      "from": "MHC-D-RESEARCH-1058",
      "to": "MHC-D-RESEARCH-1057",
      "type": "useful_with",
      "url": "/knowledge/add-professional-support-to-a-quit-smoking-attempt"
    }
  ],
  "collections": [
    {
      "id": "RC-07450D8B730573D3",
      "title": "Protect health through ordinary care and clear information",
      "url": "/collections/protect-health-through-ordinary-care-and-clear-information"
    }
  ]
}