People in every group—even those who got a fake treatment—said their wrinkles looked better after 8 or 12 weeks, which suggests that the improvement might just be in their heads or because of the season, not because of the actual skin product they used.
Claim Language
Language Strength
probability
Uses probability language (may, likely, can)
The claim uses 'may be influenced' which expresses possibility rather than certainty, placing it in the probability category. The phrase 'were observed' is descriptive but the concluding 'indicating that... may be' introduces uncertainty about causation.
Context Details
Domain
medicine
Population
human
Subject
Subjective improvements in skin wrinkles
Action
were observed
Target
in all groups, including placebo, after 8 and 12 weeks
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)
Oral hyaluronan relieves wrinkles: a double-blinded, placebo-controlled study over a 12-week period
The study found that people felt their skin got better even if they took a fake pill (placebo), which means how people feel about their skin might be tricked by expectations—but the real HA pills actually made skin wrinkles better in measurements, so both things are true.