Component
Heart-rate response to acute psychological stress
Heart-rate response to acute psychological stress. 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
Theanine reduced the heart-rate response to the laboratory stress task.
Experimental context and source evidence
- evidence_span
- {"source_cache": "artifacts/theanine-research/16930802.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "31dbb84c1297b65782bcb68a3408ca09cfeaf9e43ce03503303e1596bd2fe834", "start_char": 0, "end_char": 1257, "text_sha256": "31dbb84c1297b65782bcb68a3408ca09cfeaf9e43ce03503303e1596bd2fe834"}
- experimental_model
- Acute laboratory mental-stress experiment
- exposure
- Theanine before mental arithmetic stress
- limitations
- Small experimental stress study. Sympathetic modulation was inferred; direct receptor mechanism was not established.
- nutrient_topic
- L-Theanine research collection; topical membership is not evidence of a direct dietary effect. · L-Theanine
- organism
- 12 humans
- plain_language
- An acute physiological response was measured, not a diagnosis or long-term treatment effect.
- primary_references
- [theanine-p16930802] L-Theanine reduces psychological and physiological stress responses. (2007). https://pubmed.ncbi.nlm.nih.gov/16930802/ DOI: 10.1016/j.biopsycho.2006.06.006
- tissue_or_cell_type
- Heart rate and salivary immunoglobulin A
L-Theanine: metabolism, neural signaling, nutrient connections and human outcomes (2026-09-17) · lines 1056–1067
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Acute laboratory mental-stress experiment · source_derived_draft · unverified_draft
### theanine-stress-heart-rate Theanine reduced the heart-rate response to the laboratory stress task. Condition category: normal nutrient_topic: L-Theanine research collection; topical membership is not evidence of a direct dietary effect. plain_language: An acute physiological response was measured, not a diagnosis or long-term treatment effect. organism: 12 humans tissue_or_cell_type: Heart rate and salivary immunoglobulin A experimental_model: Acute laboratory mental-stress experiment limitations: Small experimental stress study. Sympathetic modulation was inferred; direct receptor mechanism was not established. exposure: Theanine before mental arithmetic stress evidence_span: {"source_cache": "artifacts/theanine-research/16930802.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "31dbb84c1297b65782bcb68a3408ca09cfeaf9e43ce03503303e1596bd2fe834", "start_char": 0, "end_char": 1257, "text_sha256": "31dbb84c1297b65782bcb68a3408ca09cfeaf9e43ce03503303e1596bd2fe834"} [theanine-p16930802] L-Theanine reduces psychological and physiological stress responses. (2007). https://pubmed.ncbi.nlm.nih.gov/16930802/ DOI: 10.1016/j.biopsycho.2006.06.006
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.