When rats ate hyaluronic acid, only 16% of it made it into their bloodstream unchanged — the rest got broken down or didn’t get absorbed at all.
Claim Language
Language Strength
definitive
Uses definitive language (causes, prevents, cures)
The claim uses 'was' (definitive past-tense assertion) and 'indicating' (present-tense conclusive inference), both of which present the 16% value and the conclusion about lack of absorption as established facts rather than possibilities or associations.
Context Details
Domain
pharmacology
Population
animal
Subject
14C-hyaluronic acid in male Sprague-Dawley rats (n=3)
Action
was
Target
16% oral bioavailability relative to intravenous administration, indicating most ingested material is not absorbed intact into systemic circulation
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 (0)
Contradicting (1)
Dietary Hyaluronic Acid Migrates into the Skin of Rats
The study found that most of the hyaluronic acid taken by mouth got into the rats’ blood and skin, not just passed through their bodies — which is the opposite of what the claim says.