{
  "vercy": "1.0-draft",
  "publication": {
    "status": "research-draft",
    "adjudicationStatus": "unreviewed",
    "publishableCanonical": false,
    "generatedAt": "2026-09-12T11:03:35Z",
    "providers": [
      "Codex"
    ],
    "breadth": "recalled by Codex without web access - no source was read",
    "missingProviders": [],
    "pass": 2,
    "cost": {
      "grok": {
        "seconds": 24.2,
        "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.4\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a09548-8297-7852-b5d9-e6263d266899\n--------\nuser\nDescribe what is already known about one registered thing. Answer as JSON only, no prose around it.\n\nThing: low-sodium diet\nSense to describe: (none recorded)\nDomain code: PHY.MAT\nAlso known as: (none)\n\n\nContext for this batch of 1001 things:\n# Batch 044: 1001",
        "usd": 0.0,
        "recall": true
      },
      "codex": {
        "seconds": 64.0,
        "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.4\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a09548-828d-7251-afbc-7e5b6ae3d9fd\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: low-sodium diet\nRegistry id: vr.tr.low-sodium-diet\nPlane / domain: PHY / PHY.MAT\nRegistry definition: (none recorded)\nNames folded into this entry: ("
      }
    },
    "enrichment": {
      "pass": 3,
      "engine": "claude",
      "producedAt": "2026-10-06T12:00:00Z",
      "ingestedAt": "2026-10-06T08:48:48+00:00",
      "fields": [
        "agent_conduct",
        "ethics",
        "failure_modes_and_hazards",
        "owners",
        "visual_identification"
      ]
    },
    "gate": {
      "passed": true,
      "version": "1.0",
      "at": "2026-10-07T10:10:28+00:00",
      "evidence": [
        "completeness 1.00",
        "sense: Wikidata description",
        "2 live sources",
        "review by codex: pass"
      ]
    }
  },
  "metaModel": {
    "id": "THING-Q2068354",
    "registryId": "vr.tr.low-sodium-diet",
    "name": "low-sodium diet",
    "version": "0.1.0-research.1",
    "entryKind": "thing",
    "family": "Thing Registry",
    "domain": [
      "PHY.MAT"
    ],
    "status": "research-draft"
  },
  "canonicalUrl": "https://ver.cy/models/thing/q2068354/",
  "model": {
    "registry_id": "vr.tr.low-sodium-diet",
    "name": "low-sodium diet",
    "purpose": "Enable an agent to recognise a low-sodium dietary pattern, assess its implementation against a stated sodium target, and identify decisions requiring individual clinical context.",
    "definition": "A low-sodium diet is an eating pattern that limits total dietary sodium intake, commonly to help lower blood pressure or manage conditions associated with sodium and fluid retention.",
    "scope_statement": "This model owns a dietary pattern organised around limiting total sodium intake, including its target, food-selection practices, intake evidence and review conditions; it does not treat the diet as a chemical substance or prescribe a universal sodium limit.",
    "in_scope": [
      "The sodium target, its time basis, origin and intended application",
      "Sodium contributed by foods, drinks, cooking ingredients and table additions",
      "Food selection, preparation, portioning and substitutions used to implement the target",
      "Evidence of intake and the uncertainty of sodium estimates",
      "Individual constraints, nutritional adequacy and conditions for reviewing the diet"
    ],
    "out_of_scope": [
      "Chemical identity and material properties of sodium or sodium chloride",
      "Diagnosis and treatment of conditions for which sodium restriction may be considered",
      "Manufacturing specifications and regulatory claims for individual food products",
      "Complete models of DASH, Mediterranean or other dietary patterns",
      "Independent fluid, potassium, energy or other nutrient prescriptions"
    ],
    "distinguishing_features": [
      "An explicit sodium target or reduction objective governs the dietary pattern; a general healthy-eating intention alone is insufficient.",
      "Assessment covers sodium across the diet, rather than only salt added during cooking or at the table.",
      "A diet described as reduced-sodium has a comparison baseline; that description alone does not establish compliance with an absolute sodium target.",
      "A low-sodium claim on one food does not establish that the person's overall diet meets its sodium target.",
      "Sodium restriction is a separable constraint that can be combined with other dietary patterns and does not by itself imply fluid restriction."
    ],
    "characteristics": [
      {
        "name": "Sodium objective type",
        "kind": "category",
        "unit_or_values": "absolute intake limit | reduction from baseline | both | unspecified",
        "why_it_matters": "Distinguishes a measurable intake constraint from a relative reduction or an unquantified label."
      },
      {
        "name": "Sodium intake target",
        "kind": "measurement",
        "unit_or_values": "mg sodium per stated interval, with any averaging rule",
        "why_it_matters": "Provides the reference for assessing the diet without assuming one target suits every person."
      },
      {
        "name": "Target authority",
        "kind": "relation",
        "unit_or_values": "link to an identified recommendation, clinician instruction or personal objective, including date",
        "why_it_matters": "Makes the target traceable and clarifies the basis on which it may be reviewed."
      },
      {
        "name": "Estimated sodium intake",
        "kind": "measurement",
        "unit_or_values": "mg sodium per stated interval, with coverage and uncertainty",
        "why_it_matters": "Supports comparison with the target while preserving gaps in the intake record."
      },
      {
        "name": "Baseline sodium intake",
        "kind": "measurement",
        "unit_or_values": "mg sodium per stated interval over an identified baseline period",
        "why_it_matters": "Makes a claimed reduction interpretable."
      },
      {
        "name": "Sodium contribution by source",
        "kind": "measurement",
        "unit_or_values": "mg sodium and percentage of estimated total by food, drink or added ingredient",
        "why_it_matters": "Identifies which practical changes could most affect total intake."
      },
      {
        "name": "Implementation status",
        "kind": "state",
        "unit_or_values": "planned | being implemented | under review | paused | discontinued",
        "why_it_matters": "Separates the intended diet from evidence that it is currently being followed."
      },
      {
        "name": "Observed target attainment",
        "kind": "state",
        "unit_or_values": "within target | above target | variable | insufficient evidence",
        "why_it_matters": "Prevents missing records from being interpreted as successful adherence."
      },
      {
        "name": "Salt-substitute use",
        "kind": "relation",
        "unit_or_values": "identified product, ingredient composition, quantity and review status",
        "why_it_matters": "Substitutes change the nutrient composition of the diet and may require individual suitability review."
      },
      {
        "name": "Concurrent dietary constraints",
        "kind": "relation",
        "unit_or_values": "links to relevant nutrient targets, allergies, food-access constraints and clinical instructions",
        "why_it_matters": "A sodium-reduction action must remain compatible with the rest of the person's dietary requirements."
      }
    ],
    "affordances": [
      "Translate a documented sodium target into a meal plan using explicit portions and sodium estimates.",
      "Compare estimated intake with the target and report uncertainty or missing coverage.",
      "Identify the largest recorded sodium contributors and propose feasible substitutions.",
      "Check serving-size, sodium-versus-salt and recipe-yield assumptions before combining intake data.",
      "Flag proposed changes that conflict with other dietary requirements or require clinical review.",
      "Track implementation, acceptability and target attainment over a stated review period."
    ],
    "agent_conduct": {
      "may": [
        "Explain what a low-sodium diet is and why it is commonly recommended, citing health authorities.",
        "Read and report sodium or salt content from food labels.",
        "Suggest that a person discuss their sodium target with a doctor or dietitian."
      ],
      "must_not": [
        "Set a specific sodium limit for a person's medical condition in place of a clinician.",
        "Tell a person to stop or change prescribed medicines because of their diet.",
        "Present a food as low-sodium when its label or recipe does not support that.",
        "Shame people for their diet or their culture's cooking."
      ],
      "requires_human": [
        "Planning meals for a patient with heart failure, kidney disease or another condition needing a prescribed sodium target."
      ]
    },
    "ethics": {
      "considerations": [
        "Diet advice affects health; wrong advice can harm people with heart or kidney disease.",
        "Sodium limits can make culturally important foods hard to eat; advice should respect that."
      ],
      "affected_parties": [
        "Patients on restricted diets",
        "Older people",
        "Carers who prepare meals"
      ]
    },
    "owners": {
      "steward": "The person following it, usually with their clinician or dietitian; health authorities publish guidance.",
      "master_systems": []
    },
    "visual_identification": [
      "Food labels marked low-sodium, reduced-salt or no added salt.",
      "Meals seasoned with herbs, lemon or spices in place of salt."
    ],
    "failure_modes_and_hazards": [
      "Low blood sodium in people who also take certain medicines or drink large amounts of water.",
      "Unnoticed sodium in processed foods undermining the diet.",
      "Poor adherence when food becomes unappealing."
    ],
    "what_it_is_for": [
      "A low-sodium diet is encountered in clinical nutrition and everyday meal planning to limit total sodium intake.",
      "It is commonly used in managing high blood pressure and conditions involving fluid retention.",
      "Assessment depends on a stated individual target and sodium from all foods, drinks and added ingredients."
    ],
    "standards_and_regulation": [
      "Regulation (EC) No 1924/2006, issued by the European Parliament and the Council of the European Union, regulates low-sodium and related nutrition claims on foods rather than prescribing an individual's dietary target.",
      "Title 21 CFR 101.61, issued by the United States Food and Drug Administration, defines sodium content claims for foods within its jurisdiction."
    ]
  },
  "sources": [
    {
      "id": "wikidata",
      "title": "Wikidata item Q2068354: low-sodium diet",
      "url": "https://www.wikidata.org/wiki/Q2068354",
      "url_status": "live",
      "what_it_supports": "identity and sense of the item",
      "checked_by": "wikidata-api"
    },
    {
      "id": "wikipedia-en",
      "title": "Wikipedia: Low sodium diet",
      "url": "https://en.wikipedia.org/wiki/Low_sodium_diet",
      "url_status": "live",
      "what_it_supports": "general description of the item",
      "checked_by": "wikidata-api sitelink"
    }
  ],
  "structure": {
    "bundles": [
      {
        "id": "sodium-target-and-boundary",
        "name": "Sodium target and dietary boundary",
        "description": "Defines what restriction means for this instance of the diet and what intake it covers.",
        "rationale": "The name low-sodium diet does not supply a sufficiently precise target or assessment rule.",
        "layers": [
          {
            "id": "target-definition",
            "name": "Target definition",
            "description": "Captures the quantitative objective and its authority.",
            "findings": [
              {
                "id": "explicit-sodium-objective",
                "name": "Explicit sodium objective",
                "description": "Record the intended sodium limit or reduction without filling in an unsupported default.",
                "questions": [
                  {
                    "text": "What sodium limit or reduction is intended, over what interval, and with what averaging rule?",
                    "kind": "definition",
                    "id": "explicit-sodium-objective-q01"
                  },
                  {
                    "text": "Who or what established this target, when, and for which person or population?",
                    "kind": "provenance",
                    "id": "explicit-sodium-objective-q02"
                  }
                ]
              }
            ]
          },
          {
            "id": "covered-intake",
            "name": "Covered intake",
            "description": "Defines the intake sources and neighbouring restrictions included in assessment.",
            "findings": [
              {
                "id": "whole-diet-sodium-boundary",
                "name": "Whole-diet sodium boundary",
                "description": "Make the coverage of foods, drinks and added ingredients explicit, and identify any separately tracked sodium sources.",
                "questions": [
                  {
                    "text": "Does the intake record cover drinks, condiments, cooking salt and table salt as well as meals and snacks?",
                    "kind": "boundary",
                    "id": "whole-diet-sodium-boundary-q01"
                  },
                  {
                    "text": "How are sodium from supplements or medicines and any separate fluid restriction handled in the governing plan?",
                    "kind": "boundary",
                    "id": "whole-diet-sodium-boundary-q02"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "sodium-accounting",
        "name": "Sodium accounting",
        "description": "Connects consumed quantities to traceable sodium estimates.",
        "rationale": "A diet cannot be assessed reliably when label units, portions or incomplete records are silently treated as comparable.",
        "layers": [
          {
            "id": "food-and-recipe-estimates",
            "name": "Food and recipe estimates",
            "description": "Establishes sodium amounts for the food actually consumed.",
            "findings": [
              {
                "id": "normalised-sodium-amounts",
                "name": "Normalised sodium amounts",
                "description": "Retain the original nutrient basis and portion assumptions behind each estimate.",
                "questions": [
                  {
                    "text": "Does each source report sodium or salt, per serving or per unit mass, and what conversion is needed?",
                    "kind": "measurement",
                    "id": "normalised-sodium-amounts-q01"
                  },
                  {
                    "text": "What consumed portion, recipe yield and ingredient quantities support the sodium estimate?",
                    "kind": "measurement",
                    "id": "normalised-sodium-amounts-q02"
                  }
                ]
              }
            ]
          },
          {
            "id": "coverage-and-variability",
            "name": "Coverage and variability",
            "description": "Qualifies totals by recording completeness and variation across days.",
            "findings": [
              {
                "id": "intake-estimate-confidence",
                "name": "Intake estimate confidence",
                "description": "Distinguish observed totals from estimates affected by missing meals, uncertain recipes or changing products.",
                "questions": [
                  {
                    "text": "Which sodium contributions are measured, label-derived, database-derived, estimated or missing?",
                    "kind": "provenance",
                    "id": "intake-estimate-confidence-q01"
                  },
                  {
                    "text": "How do daily totals and recording gaps affect confidence in target attainment over the review interval?",
                    "kind": "measurement",
                    "id": "intake-estimate-confidence-q02"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "food-and-meal-implementation",
        "name": "Food and meal implementation",
        "description": "Models the concrete food choices and preparation practices used to reduce sodium.",
        "rationale": "A numeric target needs workable actions at shopping, cooking and eating occasions.",
        "layers": [
          {
            "id": "selection-and-substitution",
            "name": "Selection and substitution",
            "description": "Identifies changes to foods and ingredients using actual consumption patterns.",
            "findings": [
              {
                "id": "priority-sodium-contributors",
                "name": "Priority sodium contributors",
                "description": "Prioritise substitutions by estimated contribution and feasibility rather than by food reputation alone.",
                "questions": [
                  {
                    "text": "Which foods, drinks or ingredients contribute the most sodium at the portions and frequencies recorded?",
                    "kind": "measurement",
                    "id": "priority-sodium-contributors-q01"
                  },
                  {
                    "text": "Which available substitutions reduce estimated sodium while remaining acceptable and compatible with other dietary needs?",
                    "kind": "action",
                    "id": "priority-sodium-contributors-q02"
                  }
                ]
              }
            ]
          },
          {
            "id": "preparation-and-eating-context",
            "name": "Preparation and eating context",
            "description": "Captures control over recipes, additions and meals prepared by others.",
            "findings": [
              {
                "id": "controllable-sodium-additions",
                "name": "Controllable sodium additions",
                "description": "Record where preparation choices can change sodium and where ingredient information or control is limited.",
                "questions": [
                  {
                    "text": "How are salt, sauces, stocks and condiments added and apportioned in the meals consumed?",
                    "kind": "measurement",
                    "id": "controllable-sodium-additions-q01"
                  },
                  {
                    "text": "What ordering, portioning or preparation actions are feasible for restaurant, institutional or shared household meals?",
                    "kind": "action",
                    "id": "controllable-sodium-additions-q02"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "individual-fit-and-substitutes",
        "name": "Individual fit and substitutes",
        "description": "Connects sodium restriction to the person's other requirements and proposed replacement ingredients.",
        "rationale": "Reducing sodium alone does not establish the suitability or nutritional adequacy of the resulting diet.",
        "layers": [
          {
            "id": "concurrent-requirements",
            "name": "Concurrent requirements",
            "description": "Checks compatibility with other dietary and clinical instructions.",
            "findings": [
              {
                "id": "compatible-dietary-plan",
                "name": "Compatible dietary plan",
                "description": "Keep sodium decisions linked to separately established nutritional requirements and individual constraints.",
                "questions": [
                  {
                    "text": "Which other nutrient targets, allergies or clinical instructions constrain the proposed sodium-reduction choices?",
                    "kind": "boundary",
                    "id": "compatible-dietary-plan-q01"
                  },
                  {
                    "text": "Do the proposed changes preserve adequate food intake and satisfy the person's documented dietary requirements?",
                    "kind": "action",
                    "id": "compatible-dietary-plan-q02"
                  }
                ]
              }
            ]
          },
          {
            "id": "salt-replacement-review",
            "name": "Salt replacement review",
            "description": "Treats salt substitutes as identified ingredients requiring their own assessment.",
            "findings": [
              {
                "id": "substitute-composition-and-suitability",
                "name": "Substitute composition and suitability",
                "description": "Record what replaces salt, how much is used and whether individual suitability has been established.",
                "questions": [
                  {
                    "text": "What are the substitute's sodium, potassium and other relevant ingredient amounts at the intended quantity?",
                    "kind": "measurement",
                    "id": "substitute-composition-and-suitability-q01"
                  },
                  {
                    "text": "Does the person's documented health and medication context require professional review before this substitute is used?",
                    "kind": "action",
                    "id": "substitute-composition-and-suitability-q02"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "adherence-and-review",
        "name": "Adherence and review",
        "description": "Tracks whether the diet is implemented, sustainable and due for reassessment.",
        "rationale": "A planned restriction, observed intake and health response are distinct forms of evidence.",
        "layers": [
          {
            "id": "implementation-evidence",
            "name": "Implementation evidence",
            "description": "Assesses observed practice and barriers to maintaining it.",
            "findings": [
              {
                "id": "attainment-and-feasibility",
                "name": "Attainment and feasibility",
                "description": "Evaluate target attainment alongside taste, cost, access and preparation burden.",
                "questions": [
                  {
                    "text": "Across adequately recorded intervals, how consistently does estimated intake meet the stated sodium objective?",
                    "kind": "measurement",
                    "id": "attainment-and-feasibility-q01"
                  },
                  {
                    "text": "Which barriers explain departures from the plan, and what feasible adjustment addresses them?",
                    "kind": "action",
                    "id": "attainment-and-feasibility-q02"
                  }
                ]
              }
            ]
          },
          {
            "id": "review-and-outcome-links",
            "name": "Review and outcome links",
            "description": "Connects dietary records to an authorised review process without treating health outcomes as proof of intake.",
            "findings": [
              {
                "id": "review-triggers-and-evidence",
                "name": "Review triggers and evidence",
                "description": "Keep dietary attainment separate from clinical observations and document who may revise the target.",
                "questions": [
                  {
                    "text": "Which scheduled reviews or documented changes in circumstances trigger reassessment of the sodium target?",
                    "kind": "action",
                    "id": "review-triggers-and-evidence-q01"
                  },
                  {
                    "text": "Which linked outcome observations are available, and what limits prevent attributing their changes to sodium intake alone?",
                    "kind": "boundary",
                    "id": "review-triggers-and-evidence-q02"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "evidence-and-external-alignment",
        "name": "Evidence and external alignment",
        "description": "What the world already says about this thing, gathered so the model can be checked against it.",
        "rationale": "A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.",
        "layers": [
          {
            "id": "reported-evidence",
            "name": "Reported evidence",
            "description": "Findings from the breadth pass, kept separate from the structural claims.",
            "findings": [
              {
                "id": "evidence-confidence-notes",
                "name": "Check these first",
                "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                "evidence": [
                  "The supplied PHY.MAT domain appears mismatched: this thing is a dietary pattern or intervention, not a chemical substance or material.",
                  "There is no single universal threshold for a low-sodium diet; numerical targets and the terms moderate and strict require contextual verification.",
                  "This is recall-based information; current guideline wording, labeling rules and condition-specific recommendations have not been checked."
                ],
                "questions": [
                  {
                    "id": "evidence-confidence-notes-q01",
                    "text": "Which of these check these first hold for the sense of low-sodium diet this model covers, and on what evidence?",
                    "kind": "provenance"
                  }
                ]
              },
              {
                "id": "evidence-kinds",
                "name": "Kinds and varieties",
                "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                "evidence": [
                  "Moderately sodium-restricted diet",
                  "Strictly sodium-restricted diet",
                  "Lower-sodium DASH diet"
                ],
                "questions": [
                  {
                    "id": "evidence-kinds-q01",
                    "text": "Which of these kinds and varieties hold for the sense of low-sodium diet this model covers, and on what evidence?",
                    "kind": "provenance"
                  }
                ]
              },
              {
                "id": "evidence-standards-and-regulation",
                "name": "Standards and regulation",
                "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                "evidence": [
                  "World Health Organization: guideline on sodium intake for adults and children.",
                  "US Food and Drug Administration: rules for sodium nutrient-content claims on food labels; these classify foods rather than prescribe whole diets."
                ],
                "questions": [
                  {
                    "id": "evidence-standards-and-regulation-q01",
                    "text": "Which of these standards and regulation hold for the sense of low-sodium diet this model covers, and on what evidence?",
                    "kind": "provenance"
                  }
                ]
              },
              {
                "id": "evidence-real-world-use",
                "name": "Real-world use",
                "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                "evidence": [
                  "Prevention and management of elevated blood pressure.",
                  "Individualized dietary management of heart failure.",
                  "Individualized dietary management of chronic kidney disease.",
                  "Management of fluid retention in selected clinical conditions.",
                  "Planning meals and reformulating foods to reduce sodium intake."
                ],
                "questions": [
                  {
                    "id": "evidence-real-world-use-q01",
                    "text": "Which of these real-world use hold for the sense of low-sodium diet this model covers, and on what evidence?",
                    "kind": "provenance"
                  }
                ]
              },
              {
                "id": "evidence-measurements",
                "name": "Typical measurements",
                "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                "evidence": [
                  {
                    "quantity": "Daily dietary sodium intake",
                    "typical_range": "Commonly used adult targets are approximately 1500-2300; the applicable limit depends on the guideline and clinical context.",
                    "unit": "mg/day"
                  },
                  {
                    "quantity": "Sodium chloride equivalent of sodium",
                    "typical_range": "Approximately 2.54 grams of sodium chloride per gram of sodium.",
                    "unit": "g/g"
                  }
                ],
                "questions": [
                  {
                    "id": "evidence-measurements-q01",
                    "text": "Which of these typical measurements hold for the sense of low-sodium diet this model covers, and on what evidence?",
                    "kind": "provenance"
                  }
                ]
              },
              {
                "id": "evidence-failure-modes-and-hazards",
                "name": "Failure modes and hazards",
                "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                "evidence": [
                  "Confusing the mass of sodium with the mass of salt leads to intake-calculation errors.",
                  "Reducing table salt alone can miss substantial sodium from packaged foods, restaurant meals, sauces and other ingredients.",
                  "A reduced-sodium food can still contribute substantial sodium; the claim describes a reduction relative to a reference food.",
                  "Potassium-based salt substitutes can cause dangerous potassium elevations in people with impaired potassium excretion or certain medication regimens.",
                  "Overly restrictive or poorly planned diets can reduce palatability and overall food intake, especially in frail people."
                ],
                "questions": [
                  {
                    "id": "evidence-failure-modes-and-hazards-q01",
                    "text": "Which of these failure modes and hazards hold for the sense of low-sodium diet this model covers, and on what evidence?",
                    "kind": "provenance"
                  }
                ]
              },
              {
                "id": "evidence-regional-variation",
                "name": "Regional variation",
                "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                "evidence": [
                  "Numerical sodium recommendations and legal definitions of low-sodium food claims vary across jurisdictions.",
                  "Nutrition labels may report sodium or salt equivalent, requiring conversion when comparing products.",
                  "Major dietary sodium sources vary with cuisine and food supply, including manufactured foods, bread, condiments and salt added during cooking."
                ],
                "questions": [
                  {
                    "id": "evidence-regional-variation-q01",
                    "text": "Which of these regional variation hold for the sense of low-sodium diet this model covers, and on what evidence?",
                    "kind": "provenance"
                  }
                ]
              },
              {
                "id": "evidence-neighbours",
                "name": "Neighbouring kinds and how to tell them apart",
                "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                "evidence": [
                  {
                    "name": "Low-salt diet",
                    "difference": "Often used synonymously, but sodium restriction includes sodium from compounds other than sodium chloride."
                  },
                  {
                    "name": "DASH diet",
                    "difference": "DASH specifies an overall food pattern; sodium restriction is a separate feature that can be combined with it."
                  },
                  {
                    "name": "Fluid-restricted diet",
                    "difference": "Limits fluid intake rather than sodium intake, although both restrictions may be prescribed together."
                  },
                  {
                    "name": "Low-sodium food",
                    "difference": "Describes an individual food, often under a regulated labeling definition, rather than total dietary intake."
                  },
                  {
                    "name": "Hyponatremia",
                    "difference": "Is a low blood sodium concentration, reflecting water balance relative to sodium, rather than a dietary pattern or a direct measure of sodium intake."
                  }
                ],
                "questions": [
                  {
                    "id": "evidence-neighbours-q01",
                    "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of low-sodium diet this model covers, and on what evidence?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          }
        ]
      }
    ]
  },
  "openQuestions": [
    "Which researched definition and quantitative criteria should determine when this registry entry applies, including distinctions between low-sodium and reduced-sodium diets?",
    "Does an existing Vercy diet or therapeutic-diet model already cover this concept, and should this entry link to or specialise that model?",
    "How should the inherited PHY / PHY.MAT classification represent a dietary pattern rather than a substance or material?",
    "Which validated intake-assessment methods, observation periods and uncertainty rules are appropriate for the intended uses?",
    "Which authoritative sources establish population-specific targets, salt-substitute review requirements and triggers for reassessment?"
  ],
  "statistics": {
    "bundles": 6,
    "layers": 11,
    "findings": 18,
    "questions": 28
  }
}
