Reishi mushroom - properties, contraindications, how to use

A few thousand years ago, someone saw a piece of a not-so-beautiful mushroom on a rotten tree and thought: maybe...help me? I've probably simplified the story, but someone was right - it did.

And so the reishi mushroom, it may not be too beautiful, but it is still very useful in Eastern medicine today. You can ingest reishi, drink it, even lubricate yourself with it and... brush your teeth with it. Only, does it really do anything? I've checked what scientific studies and experts say.

See also:

• Adaptogens
• Cordyceps
• Lion's Mane
• Cordyceps
• Lion's Mane
• Ashwagandha
• Macrophylla
• Caffeine
• Indian ginseng

Reishi mushroom - what is it?

Reishi is a species of fungus in the lacewing family. They are also known as laceworm (Latin Ganoderma lucidum) and lingzhi (Chinese for "divine mushroom"). There are six varieties of these fungi: red, white, blue, yellow, black and purple. The red variety is the best studied and probably the most valuable for healthand.

Reishi grows on every continent (except Antarctica). It is very rare in Poland and is on the list of potentially endangered species . The best conditions for this fungus are high humidity and temperature. In the wild, reishi grows on trees (often rotting trees) where it can colonise the wood and produce mycelium .

The Japanese name for reishi is mannetake, meaning 'mushroom of 10,000 years', and the Korean name is yeongji, which can be translated as 'divine mushroom' .

Reishi contains valuable ingredients such asand:

• magnesium,
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• zinc,
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• manganese,
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• copper,
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• germanium,
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• B vitamins,
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• amino acids,
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• polysaccharide compounds, e.g. alpha- and beta-glucans, coumarins and alkaloids,
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• steroidal components, e.g. ganoderic acid,
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The properties of these substances mean that reishi can have a positive effect on health and wellbeing. This mushroom is an adaptogen, i.e. it has properties that influence the stabilisation of physiological processes and promote the body's homeostasisand.

Divine mushroom

Reishi have been used in Eastern medicine for several thousand years. This type of mushroom was believed to have magical properties. It was attributed with success, wellbeing, divine power and longevityand.

Every ruler wanted to have reishi in his treasury, and poets wrote poems about it . Talismans are still made from reishi in Asia to protect against diseaseand.

Reishi - properties

The reishi mushroom has adaptogenic properties, meaning it can reduce the negative effects of stress and adverse external conditions on the body. It can also have a positive effect on immunity, reduce fatigue and improve cardiovascular health. It also exhibits antioxidant effects.

Unfortunately, despite the fact that reishi has been used for thousands of years in Eastern medicine, we cannot say that this mushroom has health-promoting properties for humans. There are too few scientific studies involving humans to confirm these assumptions.

There are not many studies, they are of varying quality, sometimes they are from a decade ago, and some have been carried out on animals - keep this in mind when reading about reishi.

Reishi potentially:

Promotes immunity

Will reishi displace classic milk with honey and garlic for immunity? Studies on samples have shown that reishi can affect genes in white blood cells, which are important components of the immune system. Researchers verified under a microscope that certain forms of this fungus can alter inflammatory pathways in themand.

In a 2006 study, 47 patients with colorectal cancer took 5.4g of reishi extract daily for three months. The results showed that the mushroom could increase white blood cell counts in patientsand.

In another 2007 study, fungus improved lymphocyte function in 40 football players exposed to stressful conditions. Lymphocytes also help fight infection and are an important part of the body's immune shieldand.

Further research is needed, however, as some work to date has shown no effect of reishi extract on immune function or inflammationand. Well, and reishi doesn't beat the taste of milk with honey and garlic.

Reduces fatigue and improves mood

One 2005 study examined the effect of reishi on reducing fatigue in 132 people with neurasthenia. This is a neurotic disorder manifested by a constant feeling of fatigue, nervousness, dizziness and headaches and irritabilityand.

For eight weeks, patients divided into two groups took 1800 mg of reishi extract or placebo three times a day. The group consuming the mushroom reported reduced feelings of fatigue and improved wellbeing after two months of consumptionand.

Another 2012 study of breast cancer patients found that taking reishi powder reduced fatigue, anxiety and depression and improved quality of life after four weeks of use .

Reishi may hold promise for people struggling with certain illnesses, but it is unclear whether its consumption benefits healthy individuals.

Shows anti-cancer potential

Several in vitro studies conducted between 2020 and 2022 have shown that reishi can lead to cancer cell deathand.

One review of studies has shown that the mushroom can benefit the health and wellbeing of cancer patients when used in parallel with traditional treatment, increasing white blood cell activity and improving quality of lifeand.

Reishi is able to activate NK (Natural Killer) 'natural killer' cells, which are important components of immunity, increasing their activity and the body's ability to fight cancer . Consuming reishi may reduce the chances of metastasis, or the spread of cancer to another part of the body.

Antioxidant effects

Antioxidants are molecules that protect cells from harmful oxidative stress, prevent the development of disease and delay the body's ageing process. Reishi can support their health benefitsand.

Provides support for the cardiovascular system

Research shows that reishi canand:

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• lower blood sugar concentrations,
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• increase the concentration of HDL - the "good" cholesterol,
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• lower the concentration of triglycerides,
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The mushroom's potential in this aspect has been confirmed in both normal and unhealthy blood sugarsand.

Other animal and human studies also suggest that certain compounds found in the reishi mushroom may lower blood sugar levels .

There are, however, studies that have shown no effect of consuming reishi on cholesterol, triglycerides or blood sugar levels. Will it help you? You'll have to find out for yourself - it's best to test your blood before and after consuming reishi.

Promotes skin health

Cosmetics with reishi are available on the market - hair conditioners and shampoos, creams or lotions. Several studies have shown that the use of these cosmetics can have a moisturising, anti-ageing effect, promote skin regeneration and brighten the skinand.

Reishi is also an ingredient in hair conditioners and shampoos, facial cheeses and creams, and even... toothpaste. It is credited with anti-ageing, soothing and water-binding properties in the skinand.

Other potential benefits

Reishi shows potential to :

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• inhibit the growth of gram-positive and gram-negative bacteria,
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• protect the liver,
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• act as an antifungal and antiviral agent,
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• promote muscle recovery after intense exercise,
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• act as an anti-inflammatory,
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These are conclusions from single studies or animal studies, so they should be approached with caution.

Reishi - dosage

The dosage of reishi depends on the purpose of use and is usually 1.4-5.2 g of extract per day. From 3 g upwards, it is advisable to spread the intake over 2 or 3 servings per day. A safe duration of use is 4 weeks, after which it is recommended to take a break for 1-2 weeksand.

How long to use reishi mushroom?

The safest way to take reishi mushroom is for 4 weeks, after which consumption is discontinued for 1-2 weeks. Scientific studies with reishi have typically lasted between 2 and 12 weeks, but the effects of long-term reishi intake are not yet well understoodand.

What reishi to buy?

Reishi products are available in a variety of forms, such as powders, dietary supplements, coffee and tea. They are made from different parts of the mushroom, including the mycelium, spores and fruiting bodies. The best choice would be a standardised extract, preferably with a stated DER (Drug Extract Ratio).

Extract is a dehydrated mushroom powder, making it about 10 times more potent than the raw mushroom. This means that 5g of extract acts like 50g of whole mushroomand.

The bioactive ingredients found in each product were compared with those found in the reishi mushroom itself. The results of the study showed that only 5 out of 19 samples (26%) actually contained what was claimed on the reishi product labeland.

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How is it in Poland? Unfortunately there is no such research, so all the more reason to choose extracts over powdered mushrooms. Also pay attention to the DER - even if it is not too high, it is still a big plus for the manufacturer to provide this information.

Standardised extract

REISHI, the fungus Yellow-lipped Lacewing

5.0

• Active ingredients: Extract of Reishi fruiting bodyóandash; lactobacilli
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• Form: powder
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• Packaging: 30 g or 100 g
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• Dose: 1 scoop 3 times daily
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• Sufficient for: 60 or 200 days
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See price

Product description

After a challenging day, Reishi is perfect as a relaxing evening tonic. It pairs perfectly with hot cocoa or tea.

Reishi has a broad spectrum of beneficial vitamins, mineralsós, polysaccharidesós including beta-D-glucans, nucleotides, triterpenes including ganoderic acids (A-G), sterols, lactates, glycoproteins.

Lion’s Mane is one of the most important mushrooms’s used for centuries’s in the far East. It is valued for its health-promoting properties, including cardiovascular support, lowering cholesterol and maintaining adequate immunity.

Pros and cons

After a challenging day, Reishi is perfect as a relaxing evening tonic. It pairs perfectly with hot cocoa or tea.

Reishi has a broad spectrum of beneficial vitamins, mineralsós, polysaccharidesós including beta-D-glucans, nucleotides, triterpenes including ganoderic acids (A-G), sterols, lactates, glycoproteins.

Lion’s Mane is one of the most important mushrooms’s used for centuries’s in the far East. It is valued for its health-promoting properties, including cardiovascular support, lowering cholesterol and maintaining adequate immunity.

Additional information

After a challenging day, Reishi is perfect as a relaxing evening tonic. It pairs perfectly with hot cocoa or tea.

Reishi has a broad spectrum of beneficial vitamins, mineralsós, polysaccharidesós including beta-D-glucans, nucleotides, triterpenes including ganoderic acids (A-G), sterols, lactates, glycoproteins.

Lion’s Mane is one of the most important mushrooms’s used for centuries’s in the far East. It is valued for its health-promoting properties, including cardiovascular support, lowering cholesterol and maintaining adequate immunity.

User review

After a challenging day, Reishi is perfect as a relaxing evening tonic. It pairs perfectly with hot cocoa or tea.

Reishi has a broad spectrum of beneficial vitamins, mineralsós, polysaccharidesós including beta-D-glucans, nucleotides, triterpenes including ganoderic acids (A-G), sterols, lactates, glycoproteins.

Lion’s Mane is one of the most important mushrooms’s used for centuries’s in the far East. It is valued for its health-promoting properties, including cardiovascular support, lowering cholesterol and maintaining adequate immunity.

Cocoa drink 2.0

Mushroom cacao elixir

4.9

• Active ingredients: reishi, magnesium, valerian, Ceylon cinnamon, cardamom
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• Form: powder
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• Packaging: 12 sachets
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• Dose: 1 sachet daily
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• Sufficient for: 12 days
.

See price

Product description

Natural indulgence, relaxation and tranquillity in one cup. A rival to a warm cup from mum. The infusion supports mental well-being in cases of tension and stress and contributes to optimal relaxation. Its complex composition promotes relaxation of the nervous system and helps to maintain normal psychological functions.

Mushroom Cacao will work best for peopleób in need of relieving symptomsóof stress and calming emotions. It is recommended for peopleówho want to facilitate evening relaxation and maintain natural sleep.

Pros and cons

Natural indulgence, relaxation and tranquillity in one cup. A rival to a warm cup from mum. The infusion supports mental well-being in cases of tension and stress and contributes to optimal relaxation. Its complex composition promotes relaxation of the nervous system and helps to maintain normal psychological functions.

Mushroom Cacao will work best for peopleób in need of relieving symptomsóof stress and calming emotions. It is recommended for peopleówho want to facilitate evening relaxation and maintain natural sleep.

Additional information

Natural indulgence, relaxation and tranquillity in one cup. A rival to a warm cup from mum. The infusion supports mental well-being in cases of tension and stress and contributes to optimal relaxation. Its complex composition promotes relaxation of the nervous system and helps to maintain normal psychological functions.

Mushroom Cacao will work best for peopleób in need of relieving symptomsóof stress and calming emotions. It is recommended for peopleówho want to facilitate evening relaxation and maintain natural sleep.

User review

Natural indulgence, relaxation and tranquillity in one cup. A rival to a warm cup from mum. The infusion supports mental well-being in cases of tension and stress and contributes to optimal relaxation. Its complex composition promotes relaxation of the nervous system and helps to maintain normal psychological functions.

Mushroom Cacao will work best for peopleób in need of relieving symptomsóof stress and calming emotions. It is recommended for peopleówho want to facilitate evening relaxation and maintain natural sleep.

Contraindications

Contraindications to the use of reishi areand:

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• pregnancy,
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• lactation,
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• age under 18 years old,
• use of immunosuppressants,
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• use of immunosuppressants or anticoagulants,
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• planned surgery or period of convalescence,
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• cardiovascular diseases, e.g. hypertension,
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The use of reishi may increase the risk of bleeding, so discontinue preparations with this fungus at least 2 weeks before any planned surgery.

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Side effects

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Side effects of taking reishiand:

• gastrointestinal disorders (diarrhoea, indigestion, nausea),
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• headaches and dizziness,
• diarrhoea,
and dizziness.
• rash,
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• itching of the skin,
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Side effects usually occur with excessive and prolonged use of reishi preparations. They should subside once the mushrooms are discontinued. Remember, it is advisable to take a 1-2 week break after 4 weeks of consuming this mushroom.

Some scientific studies have shown that people taking reishi mushrooms for four months were twice as likely to experience side effects as those taking placeboand.

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Does reishi harm the liver?

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Some scientific studies have shown that taking reishi mushroom extract for four weeks had no harmful effects on the liver or kidneys in healthy adults .

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On the other hand, in other studies, participants experienced liver problems after taking reishi . Because other factors were involved, it is difficult to determine whether the fungus itself was responsible for the observed liver damage.

Be cautious - if you have liver problems, consult your doctor before consuming reishi preparations.

See also:

• liver
• Fatty liver
• Liver tests

Reishi - doctors' opinions

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Doctors' opinions on reishi are extreme. While in China, reishi is prescribed on a daily basis for treatment in hospitals, in Poland, doctors tend to approach it with caution.

While searching for information about reishi, I found many desperate people who have "failed the National Health Service" and "have to help themselves". Unfortunately, these people often abandon conventional treatment and rely on scientifically unproven treatments. And dishonest supplement manufacturers profit from this desperation by touting the anti-cancer potential of miracle reishi.

How is it that in "China they take it, but in Poland they get defensive?" I asked medical doctor Witold Tomaszewski for his opinion.

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Asia as culturally, is also medically different from us. Their medicine is over 5,000 years of tradition and experience - sometimes factual, sometimes customary. It may also be a matter of a different metabolism of ethnicity. Currently, the use of reishi is a bit of an experiment. There is a lack of strong evidence for the effects of this mushroom.

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And what do the 'mushroom people' say?

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I personally know fans of adaptogenic mushrooms and have looked through various forums and thematic groups. As always - there are two sides to the coin (and indeed the mushroom). What experience do others have with reishi?

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"I like to drink coffees and chocolates with reishi in winter. I've been drinking them in season for several years now and I get less sick. I can better withstand the fast-approaching darkness outside the window and the weather doesn't hit me as much as it used to."

"I love reishi.

"I love reishi because it makes me feel better and it flavourfully spikes my various drinks. I love the distinctive taste!"

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"Not only do I drink reishi, but I also buy natural cosmetics with it, e.g. the cream has moisturised my skin nicely. I also have toothpaste and face serum. They say I've gone mad, but I ... have mushroomed!"

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"It doesn't work. I drank it for a fortnight and nothing worked, and I took it due to exhaustion, stress and poor sleep. Like a placebo for me."

"I don't know how you can drink this, hideous aftertaste like I'm drinking earth with water".

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And finally my favourite:

"What are you guys talking about, only POLISH PEEK, not some fancy stuff!!!"

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Summary

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• Reishi is a genus of adaptogenic mushrooms that show potential to support health and well-being.
• They have been used in Eastern medicine for several thousand years, and in China reishi is officially approved as a medicine for various diseases.
• Research on reishi shows that the mushroom can support immunity, positively affect mood, reduce fatigue and support cardiovascular function. It is also an antioxidant and may improve the condition of the skin.
• It is recommended to take 1.4-5.2g of the extract daily for 4 weeks and then take a break for 1-2 weeks.
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• Contraindications for the use of reishi include pregnancy, lactation, minors, use of medications that affect blood clotting and immunosuppressants, and planned surgery.
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• Side effects usually occur due to excessive consumption or allergies.
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FAQ

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Can you overdose on reishi mushrooms?

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Overdosing on reishi and taking it for a long time can negatively affect health. With excessive amounts, unpleasant side effects occur and it can even lead to damage to the liver.

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Why children must not consume reishi?

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There are not enough studies to confirm the safety and efficacy of reishi in people under 18 years of age. It is strongly recommended that a paediatrician or paediatric nutritionist be consulted before introducing any dietary supplements, whether for children or young people under 18 years of age.

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What is the world's healthiest mushroom?

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There is no single healthiest mushroom in the world, as many mushrooms show beneficial health properties. Recommended mushrooms that have positive health benefits include oyster mushrooms, boletes, mushrooms, chanterelles, reishi, black truffles and maitake.

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Is it possible to grow reishi?

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Yes, reishi mushrooms can be grown under artificial conditions and it is legal to do so. There are many methods to grow reishi, including using plywood, straw, wood substrates, etc. Many tutorials and guides can be found online to help you get started growing.

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Does reishi slim down?

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No, reishi does not slim down. There is no scientific evidence to suggest that the reishi mushroom reduces weight or promotes weight loss. However, some studies suggest that reishi may indirectly affect weight by improving some health indicators associated with weight loss, such as lowering blood cholesterol.

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What do reishi mushrooms look like?

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Rishi mushrooms have a disc-shaped shape and their caps can reach up to 20 cm in diameter. Their surface is characteristically glossy, as if lacquered. They come in several colour varieties.

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Can reishi be eaten raw?

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It is not recommended to eat reishi raw. In this form, it is difficult to digest and can be bitter to the taste. In order to benefit from its health benefits, it is recommended that it is properly processed before consumption or taken from preparations.

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Sources

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See all

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Pan, R., Lou, J., & Wei, L. (2021). Significant effects of Ganoderma lucidum polysaccharide on lipid metabolism in diabetes may be associated with the activation of the FAM3C-HSF1-CAM signaling pathway. Experimental and Therapeutic Medicine, 22(2), 820. https://doi.org/10.3892/etm.2021.10252

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