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7 min read / 3 November 2023 / yasmin sharp

10 Benefits of Spearmint Oil

Unlock the potential of spearmint oil with its 10 remarkable benefits.

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10ml amber glass bottle with spearmint oil next to spearmint leaves both on a flannel

Spearmint oil benefits often vary, from reducing stress and anxiety to balancing hormones in women and improving arthritis-related pain. 

This perennial plant, which is also known by its botanical name Mentha spicata, is part of the mint family and originally hails from Asian and Europe.

Whilst it is often associated with chewing gums and toothpastes, spearmint contains a host of potential health benefits that are drawn upon by people all over the world.

So, what is spearmint essential oil good for? We offer 10 good reasons why the oil could provide the solution to a host of common health conditions.

Spearmint plant

Spearmint oil benefits

The many benefits of spearmint oil mean it could:

1. Help hormone imbalances

Studies have shown that spearmint tea could offer some help for women with hormone imbalances, by decreasing testosterone and increasing ovulation-related hormones such as follicle-stimulating hormone (FSH) and luteinizing hormone (LH).

For example, demonstrated how 21 women drinking 2 cups of spearmint tea for a period of 5 days experienced an increase in FSH, LH and oestradiol, whilst testosterone levels were lowered.

A few years later, involving 42 women with polycystic ovary syndrome (PCOS) saw an increase in FSH and LH and a decrease in testosterone levels after drinking spearmint tea twice a day.

This was compared to another group of women who were asked to drink a placebo tea.

2. Reduce facial hair

Based on scientific research, it is believed that spearmint tea may also be able to reduce the growth of hair on the face, chest and abdomen of women.

One 5-day study required two groups of women to drink two cups of spearmint twice a day during the follicular phase of their menstrual cycle.

One group of 9 women had facial hair due to unknown causes, whilst the other group of 12 women had PCOS.

Due to the length of the study, researchers were unable to determine whether facial hair could be affected by spearmint tea, although they did find that testosterone levels were lowered.

3. Lower blood sugar

Human-based studies are needed to determine the potential effects of spearmint oil on people, although some progress has been made using animal models.

For example, saw a group of rats given a specific amount of spearmint extract every day.

One group of healthy rats remained unaffected, whilst another group of rats with diabetes saw a significant decrease in blood sugar levels.

One year earlier, researchers conducting with diabetes, also saw a 25% reduction in blood sugar after the animals were given a set amount of spearmint extract every day.

4. Improve arthritis pain

Various studies have shown that spearmint could be used as a natural remedy to ease joint pain caused by arthritis.

In late-2014, researchers of a study that had lasted for 16 weeks.

The tests involved 62 people with arthritis of the knee drinking spearmint tea twice a day.

Participants who drank regular spearmint tea saw a reduction in physical disability and stiffness, whilst those who drank spearmint tea high in rosmarinic acid experienced similar symptoms and less pain.

A conclusion was also reached in that mint-based essential oils offered pain-relieving effects.

5. Ease digestive issues

Many people use spearmint to ease symptoms related to nausea, indigestion, gas and vomiting.

Its ability to ease several digestive issues could be which tests have shown is able to inhibit muscle contractions in the digestive tract.

32 people with irritable bowel syndrome (IBS) took part in an 8-week randomised trial, which required one group of the participants to take a product containing spearmint, coriander, lemon balm and psyllium for constipation or loperamide for diarrhoea.

The results showed that those who took a placebo did not have the same experience as those who took the spearmint-supplement, which helped to reduce discomfort, abdominal pain and bloating.

Spearmint potted in a small china jug

6. Increase the intake of antioxidants

Spearmint contains a host of antioxidant compounds, including rosmarinic acid, flavanones and flavones like menthol and limonene.

Antioxidants play a vital role in protecting the body against oxidative stress, which if allowed to build up, can lead to serious conditions such as cancer, diabetes and various heart diseases.

Research has shown that spearmint offers strong antioxidant activity against free radicals.

demonstrated that using a spearmint extract helped to prevent fat oxidation, whilst also proving to be as effective as the synthetic antioxidant, Butylated hydroxytoluene (BHT).

7. Boost memory recall

Both animal and human studies have produced positive results related to the use of spearmint oil as a memory enhancer.

Some studies have shown that the simple act of chewing mint-flavoured chewing could be beneficial for memory.

Additionally, saw a group of older adults experience a 15% improvement in working memory.

This was after they had taken a daily supplement containing 900mg of spearmint.

When mice were given as part of a maze test, researchers saw that it helped to boost their learning and memory performance.

8. Reduce stress and anxiety

Stress-related spearmint oil benefits are enjoyed by many people as a way to combat negative thoughts and emotions.

It is also believed that the menthol contained in the plant also helps to create a relaxing, sedative effect on the body.

Some scientific studies have investigated spearmints ability to treat stress, with that regular use of a spearmint extract helped to lower anxiety levels and improve sleep.

Although research is ongoing, that GABA brain receptors (which help to reduce nerve activity) are affected by the spearmint, which alleviates stress and promotes relaxation.

9. Decrease blood pressure

Animal studies have produced some positive results that indicate spearmint could play a role in decreasing blood pressure.

found that the carvone compound contained in spearmint can act in a similar way to some medications that are used to lower high blood pressure.

conducted the same year also produced similar results.

It too focussed on the carvone compound, which compared to a commonly used blood pressure medication verapamil, was shown to be 100 times more potent at reducing blood vessel contractions.

10. Fight bacterial infections

Spearmint is often used as a breath-freshening agent in a wide range of toothpaste, breath mints and chewing gums.

However, thanks to its antimicrobial and antibacterial properties, spearmint has much more to offer, with some studies finding that it could help to eliminate bacteria responsible for causing bad breath.

For example, found that using spearmint essential oil was able to combat different forms of harmful bacteria.

published a few years earlier found that spearmint could be effective against bacteria such as listeria and E.coli, which can be responsible for causing foodborne illnesses.

Black and white illustration of mint leaves

Whether you want to freshen up your breath or ease certain digestive issues, there are lots of spearmint oil benefits that may be able to help.

In answer to the question, “What is spearmint oil good for?”, its high levels of antioxidants and plant compounds could go a long way to resolving a host of mind and body-related health issues.

It is also important to note that if you want to enjoy spearmint oil as a tea drink, be sure only to use a food grade spearmint essential oil (Nikura does not sell food grade spearmint oil) as it is safer to consume.

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