People who live together evidently share far more than just the kitchen, bathroom, and sofa: a study shows that they also exchange parts of their gut and oral flora https://www.welt.de/gesundheit/article6a31509aa8614079727d8276/mikrobiom-mit-wem-wir-unser-zuhause-teilen-kann-enormen-einfluss-auf-unsere-darmbakterien-haben.html Mund-Darm-Achse: Übertragung von Bakterienstämmen zwischen Personen https://www.cell.com/cell-press-blue/fulltext/S3051-3839(26)00032-0