A small study published in PLOS ONE has found that peppermint oil can reduce blood pressure by 8.48 mmHg in a group of participants.[1066][1035] The study, which was conducted in 2026, involved a total of 10 participants who were given either peppermint oil or a placebo.[1035] The results of the study were published online in PLOS ONE and have been met with significant interest from the scientific community.[1035]