When people sing, their bodies might produce more of a special antibody called IgA that helps fight off colds and infections.
Claim Language
Language Strength
definitive
Uses definitive language (causes, prevents, cures)
The verb 'increases' is used, which implies a direct and certain effect — it does not use qualifiers like 'may' or 'could,' suggesting a definitive causal relationship.
Context Details
Domain
medicine
Population
human
Subject
Singing
Action
increases
Target
levels of Immunoglobulin A (IgA) in humans
Intervention Details
Gold Standard Evidence Needed
According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.
Evidence from Studies
Supporting (1)
Effects of Choir Singing or Listening on Secretory Immunoglobulin A, Cortisol, and Emotional State
When people sang in a choir, their body made more of a special immune protein (IgA) that helps fight off colds — but just listening to singing didn’t do the same thing.