High blood pressure is one of the most common health problems in the world. Millions of people live with it every day, often without even knowing they have it.
Doctors sometimes call high blood pressure the “silent killer” because it usually causes no obvious symptoms while slowly damaging the body over time.
When blood pressure stays too high for many years, it can increase the risk of heart attacks, strokes, kidney disease, and heart failure.
Because of this, many people take medicines to keep their blood pressure under control.
However, blood pressure medicines do not always work perfectly for everyone, and some people experience unwanted side effects such as dizziness, tiredness, or coughing.
Now, researchers from the University of Lancashire have discovered that peppermint oil may help lower blood pressure naturally in people with mildly raised readings.
The study was published in the journal PLOS One and suggests that peppermint oil could become a simple, inexpensive, and easy-to-use treatment for some people with early-stage high blood pressure.
Peppermint is already widely known for its refreshing smell and cooling taste. People often use peppermint in teas, sweets, chewing gum, and digestive remedies.
Scientists believe peppermint contains several active compounds, including menthol and plant chemicals called flavonoids, which may affect blood vessels and circulation.
To test whether peppermint oil could help lower blood pressure, researchers carried out a clinical study involving 40 adults between the ages of 18 and 65.
The participants had either pre-hypertension or stage 1 hypertension. Pre-hypertension means blood pressure is higher than normal but not yet dangerously high. Stage 1 hypertension is the first official stage of high blood pressure.
The participants were randomly divided into two groups. One group received small daily doses of peppermint oil, while the other group received a placebo treatment. A placebo looks or tastes similar but does not contain the active ingredient.
The people taking peppermint oil consumed 100 microliters twice daily for 20 days.
At the end of the study, the researchers found that the peppermint oil group experienced significant improvements in systolic blood pressure. Systolic pressure is the top number in a blood pressure reading and measures the pressure inside arteries when the heart pumps blood.
On average, systolic blood pressure fell by about 8.5 mmHg in the peppermint oil group.
In comparison, the placebo group did not show meaningful changes.
Researchers also studied other health measures during the trial. These included diastolic blood pressure, which is the lower number in a blood pressure reading, along with heart rate, sleep quality, body measurements, mental well-being, and blood test results.
The findings suggest peppermint oil may affect the body in several ways that support cardiovascular health.
Lead researcher Dr. Jonnie Sinclair explained that high blood pressure remains one of the leading causes of death and heart disease around the world.
He said current blood pressure medicines are useful but may not always provide ideal long-term solutions for every patient.
According to Dr. Sinclair, peppermint oil may offer a low-cost and low-calorie option that could potentially help millions of people worldwide.
Scientists believe peppermint’s active ingredients may help relax blood vessels and improve blood flow, which could help explain the reduction in blood pressure.
However, the researchers also stressed that this was still a relatively small study involving only 40 participants over a short period of time.
Much larger and longer studies will be needed before doctors can fully understand how effective peppermint oil truly is and whether it remains safe for long-term use.
The study also mainly focused on people with mild blood pressure problems. Researchers do not yet know whether peppermint oil would help people with severe hypertension or serious heart disease.
Experts also warn that people should not stop taking prescribed blood pressure medicines without speaking to their doctor first.
Still, the findings are interesting because they suggest that natural plant compounds may play a larger role in future healthcare.
Researchers say the study adds to growing evidence that diet, lifestyle, and natural products may help support heart health alongside standard medical treatment.
Simple habits such as regular exercise, healthy eating, maintaining a healthy weight, reducing salt intake, avoiding smoking, and managing stress are still among the most effective ways to control blood pressure.
The researchers believe peppermint oil could eventually become another helpful tool for people trying to reduce their cardiovascular risk.
If you care about blood pressure, please read studies that black licorice could cause dangerous high blood pressure, and this common plant nutrient could help reduce high blood pressure.
For more information about blood pressure, please see recent studies about how coffee influence your risk of high blood pressure, and results showing this olive oil could reduce blood pressure in healthy people.
