All Flavor, No Brain Boost?

This study examines how peppermint served in herbal tea might enhance Alzheimer patients’ memory. The goal was to learn how consuming peppermint tea influences memory performance during cognitive tasks. Researchers hypothesized that peppermint tea can enhance memory performance as compared against participants consuming water only. Given the increased number of Alzheimer patients, there is an increased need to find economical treatment options to reduce the rate at which memory deteriorates. Prior research found that natural compounds like peppermint may improve cognitive function, which could improve the quality of life for individuals experiencing memory loss or at risk for cognitive impairments.

Figure 2 assesses the change in heart rate (dependent variable) of participants consuming only water (independent variable). All blood pressure measurements readings (control variables) were taken using a standard blood pressure cuff; in a seated position; and an oximeter attached to the left index finger. Undergoing three phases of examination, researchers monitored the changes of the control and peppermint group, comparing the initial heart rate against changes observed at 10 and 15 minutes, but noticed that there were little changes in the basal heart rate, 10 (p=0.44), and 15 minutes (p=0.51) showing no influence on cognitive function and stability in heart rates.

Peppermint tea affects heart rate at baseline, 10 minutes, and 15 minutes after ingestion, as seen in Figure 3. Peppermint tea vs. tap water was the independent variable, and heart rate was the dependent variable. The surroundings, the testing procedure, and the temperature of the drink were all constants. The experimental group drank peppermint tea, while the control group drank tap water. No clear patterns were seen in heart rate. The heart rate 10 and 15 minutes after drinking tea did not vary from the baseline (p=0.37 and p=0.79, respectively). These results show that ingesting peppermint did not have an effect on heart rate compared to the control group, indicating little difference in heart rate changes between water and tea consumption.

Systolic blood pressure for the peppermint tea and water conditions is displayed in Figure 4 at each phase of the tests. This information was gathered from an experiment in which participants' physiological reactions were noted after consuming either water (control group) or peppermint tea (experimental group). The independent variable was the type of beverage, while the dependent variable was systolic blood pressure. The temperature of the beverage, testing setting, and measurement period were all constants. Systolic blood pressure did not significantly alter for either group, according to the data (p = 0.81 for water and p = 0.95 for tea). This pattern implies that during the experiment, peppermint tea had no noticeable impact on blood pressure.

The study's results show that peppermint tea does not impact memory. Figures 2 and 3, track heart rate before, during, and after beverage consumption, but indicate no noticeable changes from the tea and water consumption. Figure 4 shows the same systolic blood pressure readings, supporting these results. Future studies can work towards understanding the limitations of peppermint as a physiological enhancer. The results suggest that ingesting peppermint may not produce the same effects as peppermint, which have previously shown to influence alertness and memory. Each figure shows that when comparing changes in heart rate or blood pressure, drinking peppermint tea did not cause any fluctuations, indicating that drinking peppermint tea might not have noticeable changes in cognitive function as compared to drinking water.

Fox, M., Krueger, E., Putterman, L., & Schroeder, R. (2012). The effect of peppermint on

memory performance. Physiology. 1-5.