Component

Non-shivering thermogenesis

Non-shivering thermogenesis. Species, exposure and limitations are retained in each linked claim.

4 recorded relationships. Experimental role, claim status and evidence remain attached to each record.

Read recorded mechanisms Open recursive mind map

How nutrients influence it

Every nutrient with a recorded effect on this component, credited to the nutrient that acted rather than the chapter that recorded it. Open a nutrient to see the findings and the conditions they were measured under.

How nutrients reach it in more than one step

Chains of two or more recorded steps that end here, grouped by the nutrient they start from. Each step is a separate finding, so a chain is a route a mechanism could take, not proof that it does.

Tracing routes…

What it does

Every recorded relationship this component is part of, grouped by its role. Plain wording comes first; the technical statement follows.

Recorded relationships

What acts on it

  1. Brown adipose volume correlated with the change in metabolic heat production during the mild cold phase, and positively correlated with rectal temperature at the end of that phase, which in turn correlated with shivering onset time.

    Detectable brown adipose tissue volume → Non-shivering thermogenesis source_derived_draftungraded
    Experimental context and source evidence
    evidence_span
    {"source_cache": "artifacts/cold-research/32948898.abstract.txt", "locator": "Indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "699fc07665c5f8800951348b6948dba539ed6aed5d1d354d4793be8f9f731b6a", "start_char": 0, "end_char": 1697, "text_sha256": "699fc07665c5f8800951348b6948dba539ed6aed5d1d354d4793be8f9f731b6a"}
    experimental_model
    Eighteen men with measured brown adipose volume during gradual cold exposure
    exposure
    Gradual cooling to 18.6 degrees C for non-shivering thermogenesis and 11.6 degrees C for shivering onset
    limitations
    Correlational human physiology. It tests whether muscle compensates for low brown fat, and finds an earlier shivering onset instead.
    nutrient_topic
    Cold water immersion research collection; topical membership is not evidence of a direct clinical effect, and a therapeutic exposure is not a dietary intake. · Cold water immersion
    organism
    Human
    plain_language
    People with more of the tissue made more heat without shivering and started shivering later.
    primary_references
    [cold-p32948898] Multiorgan contribution to non-shivering and shivering thermogenesis and vascular responses during gradual cold exposure in humans. (2020). https://pubmed.ncbi.nlm.nih.gov/32948898/ DOI: 10.1007/s00421-020-04496-1
    tissue_or_cell_type
    Brown adipose tissue and skeletal muscle

    Cold water immersion: cold sensing, heat production, the catecholamine axis and what repeated exposure changes (2026-09-19) · lines 507–518

    AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Eighteen men with measured brown adipose volume during gradual cold exposure · source_derived_draft · unverified_draft

    ### cold-bat-volume-nst Brown adipose volume correlated with the change in metabolic heat production during the mild cold phase, and positively correlated with rectal temperature at the end of that phase, which in turn correlated with shivering onset time. Condition category: normal nutrient_topic: Cold water immersion research collection; topical membership is not evidence of a direct clinical effect, and a therapeutic exposure is not a dietary intake. plain_language: People with more of the tissue made more heat without shivering and started shivering later. organism: Human tissue_or_cell_type: Brown adipose tissue and skeletal muscle experimental_model: Eighteen men with measured brown adipose volume during gradual cold exposure limitations: Correlational human physiology. It tests whether muscle compensates for low brown fat, and finds an earlier shivering onset instead. exposure: Gradual cooling to 18.6 degrees C for non-shivering thermogenesis and 11.6 degrees C for shivering onset evidence_span: {"source_cache": "artifacts/cold-research/32948898.abstract.txt", "locator": "Indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "699fc07665c5f8800951348b6948dba539ed6aed5d1d354d4793be8f9f731b6a", "start_char": 0, "end_char": 1697, "text_sha256": "699fc07665c5f8800951348b6948dba539ed6aed5d1d354d4793be8f9f731b6a"} [cold-p32948898] Multiorgan contribution to non-shivering and shivering thermogenesis and vascular responses during gradual cold exposure in humans. (2020). https://pubmed.ncbi.nlm.nih.gov/32948898/ DOI: 10.1007/s00421-020-04496-1
    Complete structured claim and evidence

  2. Skeletal muscle mass correlated with baseline metabolic heat production but not with non-shivering thermogenesis, and skin blood flow and skin temperatures did not correlate with non-shivering thermogenesis or brown adipose volume.

    Skeletal muscle as a thermogenic and postural organ → Non-shivering thermogenesis source_derived_draftungraded
    Experimental context and source evidence
    evidence_span
    {"source_cache": "artifacts/cold-research/32948898.abstract.txt", "locator": "Indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "699fc07665c5f8800951348b6948dba539ed6aed5d1d354d4793be8f9f731b6a", "start_char": 0, "end_char": 1697, "text_sha256": "699fc07665c5f8800951348b6948dba539ed6aed5d1d354d4793be8f9f731b6a"}
    experimental_model
    Eighteen men with measured brown adipose volume during gradual cold exposure
    exposure
    Gradual cooling to 18.6 degrees C for non-shivering thermogenesis and 11.6 degrees C for shivering onset
    limitations
    Correlational human physiology. It tests whether muscle compensates for low brown fat, and finds an earlier shivering onset instead.
    nutrient_topic
    Cold water immersion research collection; topical membership is not evidence of a direct clinical effect, and a therapeutic exposure is not a dietary intake. · Cold water immersion
    organism
    Human
    plain_language
    Muscle does not quietly take over the job; it just starts shivering sooner.
    primary_references
    [cold-p32948898] Multiorgan contribution to non-shivering and shivering thermogenesis and vascular responses during gradual cold exposure in humans. (2020). https://pubmed.ncbi.nlm.nih.gov/32948898/ DOI: 10.1007/s00421-020-04496-1
    tissue_or_cell_type
    Brown adipose tissue and skeletal muscle

    Cold water immersion: cold sensing, heat production, the catecholamine axis and what repeated exposure changes (2026-09-19) · lines 520–531

    AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Eighteen men with measured brown adipose volume during gradual cold exposure · source_derived_draft · unverified_draft

    ### cold-muscle-does-not-compensate Skeletal muscle mass correlated with baseline metabolic heat production but not with non-shivering thermogenesis, and skin blood flow and skin temperatures did not correlate with non-shivering thermogenesis or brown adipose volume. Condition category: normal nutrient_topic: Cold water immersion research collection; topical membership is not evidence of a direct clinical effect, and a therapeutic exposure is not a dietary intake. plain_language: Muscle does not quietly take over the job; it just starts shivering sooner. organism: Human tissue_or_cell_type: Brown adipose tissue and skeletal muscle experimental_model: Eighteen men with measured brown adipose volume during gradual cold exposure limitations: Correlational human physiology. It tests whether muscle compensates for low brown fat, and finds an earlier shivering onset instead. exposure: Gradual cooling to 18.6 degrees C for non-shivering thermogenesis and 11.6 degrees C for shivering onset evidence_span: {"source_cache": "artifacts/cold-research/32948898.abstract.txt", "locator": "Indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "699fc07665c5f8800951348b6948dba539ed6aed5d1d354d4793be8f9f731b6a", "start_char": 0, "end_char": 1697, "text_sha256": "699fc07665c5f8800951348b6948dba539ed6aed5d1d354d4793be8f9f731b6a"} [cold-p32948898] Multiorgan contribution to non-shivering and shivering thermogenesis and vascular responses during gradual cold exposure in humans. (2020). https://pubmed.ncbi.nlm.nih.gov/32948898/ DOI: 10.1007/s00421-020-04496-1
    Complete structured claim and evidence

  3. UCP1-ablated mice acclimated to 4 degrees C sustained heat production at four times resting levels entirely by shivering, with no substitution by any adaptive non-shivering thermogenic process in muscle or any other organ, and neither UCP2 nor UCP3 could substitute.

    Human mitochondrial uncoupling protein 1 / UCP1 → Non-shivering thermogenesis source_derived_draftungraded
    Experimental context and source evidence
    availability_state
    machinery_impairment Imported condition classification; unverified.
    evidence_span
    {"source_cache": "artifacts/cold-research/11511509.abstract.txt", "locator": "Indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "6e49074478632e22aff36d236fa55e5afb956a4b335f7d95d2cae6f02c4f3d05", "start_char": 0, "end_char": 1527, "text_sha256": "6e49074478632e22aff36d236fa55e5afb956a4b335f7d95d2cae6f02c4f3d05"}
    experimental_model
    UCP1-ablated mice acclimated successively to 4 degrees C
    exposure
    Successive cold acclimation with heat production at four times resting level
    limitations
    A demanding negative result: no substitute for the protein was recruited even under extreme thermogenic demand. It is a mouse result about adaptive non-shivering thermogenesis specifically.
    nutrient_topic
    Cold water immersion research collection; topical membership is not evidence of a direct clinical effect, and a therapeutic exposure is not a dietary intake. · Cold water immersion
    organism
    Mouse
    plain_language
    Only one protein can produce adaptive heat without shivering; nothing else stands in for it.
    primary_references
    [cold-p11511509] Only UCP1 can mediate adaptive nonshivering thermogenesis in the cold. (2001). https://pubmed.ncbi.nlm.nih.gov/11511509/ DOI: 10.1096/fj.00-0536fje
    tissue_or_cell_type
    Brown adipose tissue, muscle and whole body
    trigger_kind
    machinery_impairment Imported condition classification; unverified.

    Cold water immersion: cold sensing, heat production, the catecholamine axis and what repeated exposure changes (2026-09-19) · lines 312–323

    AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · UCP1-ablated mice acclimated successively to 4 degrees C · source_derived_draft · unverified_draft

    ### cold-ucp1-only-mediator UCP1-ablated mice acclimated to 4 degrees C sustained heat production at four times resting levels entirely by shivering, with no substitution by any adaptive non-shivering thermogenic process in muscle or any other organ, and neither UCP2 nor UCP3 could substitute. Condition category: machinery_impairment nutrient_topic: Cold water immersion research collection; topical membership is not evidence of a direct clinical effect, and a therapeutic exposure is not a dietary intake. plain_language: Only one protein can produce adaptive heat without shivering; nothing else stands in for it. organism: Mouse tissue_or_cell_type: Brown adipose tissue, muscle and whole body experimental_model: UCP1-ablated mice acclimated successively to 4 degrees C limitations: A demanding negative result: no substitute for the protein was recruited even under extreme thermogenic demand. It is a mouse result about adaptive non-shivering thermogenesis specifically. exposure: Successive cold acclimation with heat production at four times resting level evidence_span: {"source_cache": "artifacts/cold-research/11511509.abstract.txt", "locator": "Indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "6e49074478632e22aff36d236fa55e5afb956a4b335f7d95d2cae6f02c4f3d05", "start_char": 0, "end_char": 1527, "text_sha256": "6e49074478632e22aff36d236fa55e5afb956a4b335f7d95d2cae6f02c4f3d05"} [cold-p11511509] Only UCP1 can mediate adaptive nonshivering thermogenesis in the cold. (2001). https://pubmed.ncbi.nlm.nih.gov/11511509/ DOI: 10.1096/fj.00-0536fje
    Complete structured claim and evidence

Where it participates (unsigned role)

  1. Heat produced by the thermogenic action of adrenaline may represent more than a quarter of total cold thermogenesis, and in winter swimmers shivering was induced later during cooling, after 40 minutes, suggesting an important contribution of non-shivering thermogenesis to the early thermogenic response.

    Epinephrine → Catecholamine-driven cold thermogenesis source_derived_draftungraded
    Experimental context and source evidence
    evidence_span
    {"source_cache": "artifacts/cold-research/10825419.abstract.txt", "locator": "Indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "df5b07f571e51ae21572ac56aa97d1a9dffcd44fe8f5ead4c929086cbbd37e62", "start_char": 0, "end_char": 2308, "text_sha256": "df5b07f571e51ae21572ac56aa97d1a9dffcd44fe8f5ead4c929086cbbd37e62"}
    experimental_model
    Cold-adapted winter swimmers and controls during one hour of immersion at 13 degrees C
    exposure
    One hour of cold water immersion at 13 degrees C
    limitations
    A comparison of adapted and unadapted people. The adrenaline contribution to thermogenesis is the authors’ estimate from their thermoregulation data, not a direct measurement of a hormone-driven heat fraction.
    nutrient_topic
    Cold water immersion research collection; topical membership is not evidence of a direct clinical effect, and a therapeutic exposure is not a dietary intake. · Cold water immersion
    organism
    Human
    plain_language
    A quarter of the heat may come from a hormone rather than from muscle shaking.
    primary_references
    [cold-p10825419] Thermoregulation in winter swimmers and physiological significance of human catecholamine thermogenesis. (2000). https://pubmed.ncbi.nlm.nih.gov/10825419/ DOI: 10.1111/j.1469-445x.2000.01909.x
    tissue_or_cell_type
    Whole body thermoregulation

    Cold water immersion: cold sensing, heat production, the catecholamine axis and what repeated exposure changes (2026-09-19) · lines 624–635

    AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Cold-adapted winter swimmers and controls during one hour of immersion at 13 degrees C · source_derived_draft · unverified_draft

    ### cold-catecholamine-thermogenesis-share Heat produced by the thermogenic action of adrenaline may represent more than a quarter of total cold thermogenesis, and in winter swimmers shivering was induced later during cooling, after 40 minutes, suggesting an important contribution of non-shivering thermogenesis to the early thermogenic response. Condition category: normal nutrient_topic: Cold water immersion research collection; topical membership is not evidence of a direct clinical effect, and a therapeutic exposure is not a dietary intake. plain_language: A quarter of the heat may come from a hormone rather than from muscle shaking. organism: Human tissue_or_cell_type: Whole body thermoregulation experimental_model: Cold-adapted winter swimmers and controls during one hour of immersion at 13 degrees C limitations: A comparison of adapted and unadapted people. The adrenaline contribution to thermogenesis is the authors’ estimate from their thermoregulation data, not a direct measurement of a hormone-driven heat fraction. exposure: One hour of cold water immersion at 13 degrees C evidence_span: {"source_cache": "artifacts/cold-research/10825419.abstract.txt", "locator": "Indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "df5b07f571e51ae21572ac56aa97d1a9dffcd44fe8f5ead4c929086cbbd37e62", "start_char": 0, "end_char": 2308, "text_sha256": "df5b07f571e51ae21572ac56aa97d1a9dffcd44fe8f5ead4c929086cbbd37e62"} [cold-p10825419] Thermoregulation in winter swimmers and physiological significance of human catecholamine thermogenesis. (2000). https://pubmed.ncbi.nlm.nih.gov/10825419/ DOI: 10.1111/j.1469-445x.2000.01909.x
    Complete structured claim and evidence

In the sources

Preserved passages that mention this component, quoted exactly. Open one to read it in context.

    This is a research prototype built from draft material. It is not medical advice, and its statements still await verification against the original studies.

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