The study found that apple cider vinegar (ACV) can effectively kill harmful bacteria like E. coli, Staphylococcus aureus, and the yeast Candida albicans. It also showed that ACV helps reduce inflammation by lowering the levels of certain harmful substances (cytokines) produced by immune cells when exposed to these germs. Additionally, ACV seemed to interfere with the germs’ ability to produce important proteins they need to survive and grow.