Component
Self-reported negative affect
Self-reported negative affect. Species, exposure and limitations are retained in each linked claim.
1 recorded relationships. Experimental role, claim status and evidence remain attached to each record.
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.
Other things that act on it
Enzymes, hormones, genes, and other components with a recorded effect. These are not nutrients, so they do not count toward the arrows above. Each finding names the chapter that recorded it.
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.
What acts on it
Negative affect was lower 180 minutes after a single 15-minute immersion at 10 degrees C while positive affect did not change, and cortisol was lower at 180 minutes, whereas serum beta-endorphins did not change throughout the trial.
Experimental context and source evidence
- evidence_span
- {"source_cache": "artifacts/cold-research/37866096.abstract.txt", "locator": "Indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "2180ef37d9e3dda6b7785769dcc2e4deb89b07a12ffed469e52c80af563cff54", "start_char": 0, "end_char": 1665, "text_sha256": "2180ef37d9e3dda6b7785769dcc2e4deb89b07a12ffed469e52c80af563cff54"}
- experimental_model
- Sixteen healthy adults completing one 15-minute immersion at 10 degrees C with Doppler ultrasound and blood sampling
- exposure
- One 15-minute immersion at 10 degrees C
- limitations
- A small single-bout study. Beta-endorphin did not change, which bears on the common attribution of the mood effect to endorphins.
- 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
- Three hours after one plunge people felt less bad, though not better, and the endorphin explanation did not hold up.
- primary_references
- [cold-p37866096] Cardiovascular and mood responses to an acute bout of cold water immersion. (2023). https://pubmed.ncbi.nlm.nih.gov/37866096/ DOI: 10.1016/j.jtherbio.2023.103727
- tissue_or_cell_type
- Brachial artery and mood
Cold water immersion: cold sensing, heat production, the catecholamine axis and what repeated exposure changes (2026-09-19) · lines 741–752
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Sixteen healthy adults completing one 15-minute immersion at 10 degrees C with Doppler ultrasound and blood sampling · source_derived_draft · unverified_draft
### cold-acute-negative-affect Negative affect was lower 180 minutes after a single 15-minute immersion at 10 degrees C while positive affect did not change, and cortisol was lower at 180 minutes, whereas serum beta-endorphins did not change throughout the trial. 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: Three hours after one plunge people felt less bad, though not better, and the endorphin explanation did not hold up. organism: Human tissue_or_cell_type: Brachial artery and mood experimental_model: Sixteen healthy adults completing one 15-minute immersion at 10 degrees C with Doppler ultrasound and blood sampling limitations: A small single-bout study. Beta-endorphin did not change, which bears on the common attribution of the mood effect to endorphins. exposure: One 15-minute immersion at 10 degrees C evidence_span: {"source_cache": "artifacts/cold-research/37866096.abstract.txt", "locator": "Indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "2180ef37d9e3dda6b7785769dcc2e4deb89b07a12ffed469e52c80af563cff54", "start_char": 0, "end_char": 1665, "text_sha256": "2180ef37d9e3dda6b7785769dcc2e4deb89b07a12ffed469e52c80af563cff54"} [cold-p37866096] Cardiovascular and mood responses to an acute bout of cold water immersion. (2023). https://pubmed.ncbi.nlm.nih.gov/37866096/ DOI: 10.1016/j.jtherbio.2023.103727
Complete structured claim and evidence
The events it takes part in
A mechanism often involves more than two components. These are the full events, with every participant and its role.
Situations it appears in
Low-supply and faulty-machinery situations recorded in the chapters where this component plays a part.
In the sources
Preserved passages that mention this component, quoted exactly. Open one to read it in context.
Open hypotheses
Proposed ideas that involve this component. They are labeled as hypotheses and do not change any recorded statement.
This is a research prototype built from draft material. It is not medical advice, and its statements still await verification against the original studies.