The Claim
Cranberry polyphenol intake at 54.5 mg/day for 6 weeks is associated with a positive correlation between the abundance of Eggerthella and serum levels of 3-(3-hydroxyphenyl)propionic acid in overweight and obese adults.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
In overweight and obese adults, consuming 54.5 mg of cranberry polyphenols daily for six weeks is linked to higher levels of the gut bacterium Eggerthella alongside higher levels of the compound 3-(3-hydroxyphenyl)propionic acid in the blood.
See the scientific wording
Cranberry polyphenol intake (54.5 mg/day for 6 weeks) is associated with a positive correlation between the abundance of Eggerthella and serum levels of 3-(3-hydroxyphenyl)propionic acid in overweight and obese adults, suggesting a potential microbe–metabolite interaction, though causation cannot be inferred.
When people consume cranberry polyphenols, these compounds travel to the gut unchanged, where certain bacteria, including Eggerthella, break them down into a specific chemical called 3-(3-hydroxyphenyl)propionic acid. This chemical enters the bloodstream, and its levels rise when Eggerthella is present.
What the research says
1 studyPeople who drank cranberry juice for six weeks sometimes developed more of a gut bacterium called Eggerthella, and when they did, they also had higher levels of a specific blood chemical — the study found this link, but didn’t prove the bacterium makes the chemical.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.