EditorialPills and suppositories that promise to balance the vaginal microbiome are lining drugstore shelves and online marketplaces (Tyler Comrie/The New York Times)
EditorialLab technicians at OpenBiome, a nonprofit stool bank that supplies most of the fecal matter for transplants, in Somerville, Mass., Feb. 5, 2019. (Kayana Szymczak/The New York Times)
EditorialA photo provided by Janice Haney Carr/CDC shows Micrococcus luteus, magnified 10,000 times, which produces body odor. (Janice Haney Carr/CDC via The New York Times)