How does mint affect the brain?

 Peppermint in many forms such as tea, candy, and oil can be used to help improve mental awareness. The menthol “stimulates the Hippocampus area of the brain which controls mental clarity and memory. The odour triggers you to wake up and pay attention.” This explains why many people believe that peppermint makes you smarter when really it makes you more alert. Peppermint works independently of the effects on mood and motivation; therefore, exposure to peppermint aroma functions to improve cognitive function during learning and memory retrieval.

Manufacturer of Menthol Crystals in India presents here in this article some of the fascinating studies on the effects of the scent of mint on brain functioning, as follows:-

1.      At the University of Cincinnati, a study found that peppermint made students taking a test more focused and alert, and ended up with a better grade on their test. Peppermint has this effect because it increases oxygen saturation and blood pressure, which results in physiological arousal. Blood brings oxygen to your brain, so if peppermint increases the amount of oxygen in your blood and then increases your blood pressure, more oxygen travels to your brain. The more oxygen was available to your brain, the better your concentration and focus.

2.      A recent study, performed by a collaboration of scientists from the UK and Duke University, set out to fill some of the existing gaps in the scientific literature concerning the effects of essential oils on cognitive performance. Using in vitro analysis, they assessed the ability of numerous essential oils to bind to key receptors and enzymes found in the brain, such as GABA and cholinergic receptors, which modulate cognitive performance. Their preliminary testing identified spearmint and peppermint oils as the most promising due to the propensity of these oils to bind to GABA and cholinergic receptors.

3.      To take the experiment further, a double-blind, 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 50 μL or 100 μL (approximately 1 or 2 drops respectively) of peppermint/spearmint essential oils. Participants were asked to perform a number of tasks designed to test cognitive function and assessed for mental fatigue.

The Results: 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. The authors of the study suggested the increased activation of cholinergic receptors by peppermint essential oil as the explanation for the cognitive benefits observed. While the study was limited to a small number of participants, this research represents a step forward in better understanding the benefits of essential oils in promoting healthy cognitive function.

4.      Similarly, in an experiment at Wheeling Jesuit University, students were asked to chew different flavours of gum, one of them being peppermint, while doing work. Chewing gum already improves blood flow to your brain, but peppermint only enhances that effect. Through this experiment, the students chewing peppermint gum were found to be both more productive and also improve memory.

Peppermint also has the ability to improve athletic performance as well as helping to improve reaction times.

Recent research has found that simply the aroma of peppermint essential oil could improve memory, reasoning, concept formation, attention span, and problem-solving if inhaled orthonasally, through the nose. Inhaling the scent of peppermint is a non-pharmacological way to enhance human cognitive performance. It can even be grown in your own home! Additionally, researchers found peppermint helpful in alleviating the symptoms of Alzheimer’s, a neurodegenerative disease that affects patients’ functional memories, is currently incurable by modern, lab-made drugs.

In a patient with Alzheimer’s, abnormal amounts of proteins deposits, known as plaque, accumulate throughout the brain and nerve cells called neurons to die, resulting in an eventual loss of memory. Although nothing can be done to stop the spread of the plaque, researchers found that the smelling peppermint oil helped improve Alzheimer patients’ symptoms of a weakening memory, keeping their neural signals strong and healthy.

To further understand the effects of peppermint on the brain, one must first understand the process behind learning and memory. The reasons behind the human brain’s ability to learn new material and form new memories can essentially be described in two words: long-term potentiation (LTP). LTP, known as the cellular mechanism behind learning and memory, creates long-lasting increases in the strength of signals between neurons in the hippocampus, a structure in the brain particularly important for long-term memory. The longer the neurons are subjected to LTP, the stronger the signals between hippocampal neurons become, thereby making learning and memorizing material easier and faster.

 

Role Of Cool Menthol In Balancing Trpm8 Protein In Brains:

Nerves are the wiring of the brain, carrying information in the form of electric currents. Our nervous system is built to sense changes in temperatures – a whole set of nerves running from our skin to the brain is dedicated to conveying just that information. The receptor protein that senses the change in temperature is called TRPM8 and it is found in all cold-sensing nerve cells. TRPM8 is a voltage-gated ion-channel protein – meaning it allows entry of calcium ions on sensing the change in temperature. Whenever there is a drop in temperature, the voltage on TRPM8 somehow changes and its shape changes so that it allows calcium ions to flow into the nerve cell. This triggers current to flow from the membrane of the nerve cell. This current carrying vital information warns the brain of the temperature fall. Falling temperatures is not the only factor that switches on TRPM8, though. A waxy crystalline organic chemical, called menthol, found in peppermint and other mint oils, can somehow bind to TRPM8 directly and activate it. 

In fact, TRPM8 was first discovered as a protein that responds to menthol and was later acknowledged for its role in sensing temperature fall. It is also found that other “cooling chemicals” in nature like eucalyptol and icilin, that act similarly. Peppermint drops fire up TRPM8 in cold-sensing nerves and makes your mouth instantly feel cool. Even after you have swallowed, some menthol remains and keeps the nerves activated. Just a sip of water can get the nerves fired up again. In fact, our nerves have similar proteins to sense hot temperatures as well. Scientists have discovered a protein called TRP-V1 that acts like TRPM8 to sense a rise in temperature. Capsaicin, the chemical that gives hot peppers their zing, directly activates TRP-V1, giving that intense feeling of heat.

Menthol, eucalyptus oil and other cooling agents have long been used to relieve arthritic and other muscle and bone pain. It is still not understood exactly how it works, but one way it may act is by activating its receptor, TRPM8. Just like your mouth feels numb when you eat peppermint, applying menthol to your skin activates the cold-sensing nerves making the area go numb. 

Now you no longer feel the pain. Menthol can also bind to another receptor called kappa opioid receptor that can also produce a numbing effect.