Evidence check: Östradiol in the context of Darmgesundheit

The provided knowledge context does not contain direct evidence linking estradiol to gut health. General biological knowledge indicates that estradiol can influence gut microbiome composition and intestinal barrier function via estrogen receptors, but this is based on mechanistic and animal studies, not on the sources given here. Without specific human trials or guidelines from the context, the evidence level is unclear. A conservative interpretation is warranted: hormonal effects on the gut are plausible but insufficiently supported to derive actionable recommendations. For MyBody-X tests involving hormone or gut markers, users should understand that results are indicative and not a substitute for clinical evaluation.