Peppermint essential oil for improved cognitive function

A double-blinded, placebo-controlled, cross-over clinical trial was conducted with 24 healthy individuals as study participants. Study participants were given placebo capsules or capsules containing either 1 or 2 drops of peppermint essential oil. Participants were asked to perform a number of tasks designed to test cognitive function and assessed for mental fatigue.

The researchers found that peppermint essential oil had a positive effect on cognition during the execution of difficult mental tasks. In addition, peppermint essential oil significantly reduced cognitive fatigue.

Reference:
Kennedy D, Okello E, Chazot P, et al. Volatile Terpenes and Brain Function: Investigation of the Cognitive and Mood Effects of Mentha × Piperita L. Essential Oil with In Vitro Properties Relevant to Central Nervous System Function. Nutrients. 2018;10(8). pii: E1029. doi: 10.3390/nu10081029.