Why Is Reishi Called the “Mushroom of Immortality”? Ganoderma lucidum History and Scientific Research
Reishi (Ganoderma lucidum) is one of the world’s best-known mushrooms traditionally used in Asian cultures. In China it is known as Lingzhi, in Japan as Reishi, and for centuries historical sources have associated it with longevity, vitality, and maintaining balance within the body. This is why Reishi is often referred to as the “mushroom of immortality.”
The history of Ganoderma use in Asia stretches back more than 2,000 years. Today, scientific interest extends far beyond these ancient traditions. Researchers are studying the chemical composition of Reishi and how its bioactive compounds interact with different biological processes in the human body.
Ganoderma lucidum research covers a remarkably broad range of areas, including the immune system, inflammatory processes, oxidative stress, glucose and lipid metabolism, liver function, cardiovascular health, the gut microbiome, the nervous system, brain ageing, and cellular processes.
Comprehensive scientific review of Ganoderma lucidum:
https://pubmed.ncbi.nlm.nih.gov/34411377/
What Makes Reishi Special?
Ganoderma lucidum contains a wide variety of naturally occurring compounds. Scientific literature describes polysaccharides, beta-glucans, triterpenoids, ganoderic acids, sterols, proteins, peptides, nucleosides, and other compounds.
Researchers have focused particular attention on three groups of substances.
Polysaccharides and beta-glucans — studied primarily in relation to immune function, inflammatory processes, oxidative stress, and the gut microbiome.
Triterpenoids — investigated for their potential role in inflammatory pathways, oxidative stress, and various cellular processes.
Ganoderic acids — Ganoderma-specific triterpenoids whose biological activity represents one of the most interesting areas of modern Reishi research.
Scientific review:
https://pubmed.ncbi.nlm.nih.gov/34411377/
Reishi and the Immune System
One of the most extensively researched areas involving Ganoderma lucidum is the immune system.
Of particular interest are the polysaccharides and beta-glucans found in Reishi. Scientists are studying how these compounds interact with various immune cells and signalling pathways.
Research has examined the responses of macrophages, lymphocytes, natural killer cells (NK cells), and other components of the immune system to polysaccharides derived from Ganoderma.
Research continues to determine which Ganoderma polysaccharides are the most biologically active, how beta-glucan structure affects their activity, and how mechanisms observed in laboratory studies translate to the human body.
Comprehensive scientific review:
https://pubmed.ncbi.nlm.nih.gov/34411377/
Reishi, Stress, Fatigue and Well-Being
Interesting human clinical data have also emerged regarding fatigue, the nervous system, and general well-being.
A randomized, double-blind, placebo-controlled study involved 132 people with neurasthenia. A standardized Ganoderma lucidum polysaccharide extract was used in the study.
After eight weeks, statistically significant differences were observed in several symptom and well-being measures in the Ganoderma group compared with placebo.
This study is particularly interesting because, unlike many laboratory experiments, it was conducted in humans and included a placebo control group.
The effects of Ganoderma lucidum on fatigue, the nervous system, stress, and related processes continue to be investigated. Larger clinical studies may help determine which Reishi compounds and mechanisms are most relevant.
Clinical study:
https://pubmed.ncbi.nlm.nih.gov/15857210/
Reishi, Sleep and the Nervous System
Reishi has traditionally been associated with calmness, rest, and maintaining balance, which has also led modern researchers to investigate the nervous system and mechanisms involved in sleep regulation.
Experimental studies are examining how compounds found in Ganoderma may interact with the nervous system, inflammatory pathways, and oxidative stress.
This is an area where more high-quality human studies are needed. Future research may provide a clearer understanding of the potential significance of Reishi compounds in the context of sleep quality, fatigue, stress, and nervous system function.
Comprehensive review of Ganoderma lucidum pharmacological research:
https://pubmed.ncbi.nlm.nih.gov/34411377/
Reishi and Blood Sugar
Ganoderma lucidum is also being studied in relation to glucose metabolism, blood sugar levels, insulin function, and metabolic syndrome.
Laboratory and animal studies have produced interesting findings involving Ganoderma polysaccharides and other bioactive compounds.
Human studies have also been conducted.
For example, a double-blind, randomized, placebo-controlled trial included 84 people with type 2 diabetes and metabolic syndrome. Researchers examined the effects of Ganoderma lucidum on HbA1c, fasting glucose, and several other metabolic markers.
In this study, no statistically significant changes in HbA1c or fasting glucose were observed compared with placebo.
Research findings in this area remain mixed, which is why Ganoderma lucidum and glucose metabolism continue to be an active field of research. Future clinical studies need to clarify the importance of extract composition, dosage, duration of use, and specific Ganoderma compounds.
Clinical study:
https://pubmed.ncbi.nlm.nih.gov/27511742/
Reishi, Cholesterol and Cardiovascular Health
Ganoderma lucidum is also being investigated in relation to cholesterol, lipid metabolism, blood vessels, and cardiovascular risk factors.
Experimental studies examine how compounds found in Reishi interact with lipid metabolism, oxidative stress, and inflammatory pathways.
Results from human clinical studies have so far been mixed, and research in this field continues.
One particularly interesting question is whether outcomes depend on the composition of the Ganoderma extract, concentrations of polysaccharides and triterpenoids, duration of use, and the metabolic status of study participants.
Clinical study:
https://pubmed.ncbi.nlm.nih.gov/27511742/
Comprehensive Ganoderma lucidum review:
https://pubmed.ncbi.nlm.nih.gov/34411377/
Reishi and Blood Pressure
Within cardiovascular research, Ganoderma lucidum is also being studied in relation to blood pressure and mechanisms involved in vascular function.
Scientists are interested in both Reishi triterpenoids and polysaccharides and their potential interactions with oxidative stress, inflammatory pathways, and metabolism.
Clinical evidence in this area remains limited, and further research is needed to better understand the significance of Ganoderma compounds in cardiovascular function.
Scientific review:
https://pubmed.ncbi.nlm.nih.gov/34411377/
Reishi, the Liver and Oxidative Stress
Another important field of Ganoderma lucidum research involves the liver and oxidative stress.
Reishi polysaccharides, triterpenoids, and ganoderic acids have been investigated in experimental studies in relation to antioxidant, anti-inflammatory, and liver-cell protective mechanisms.
The liver plays an essential role in metabolism and the body’s detoxification processes, making the relationship between Ganoderma and liver function an important area of scientific interest.
Research continues, with particular attention being paid to oxidative stress, inflammatory pathways, and mechanisms involved in protecting liver cells. Larger clinical studies may help clarify the significance of these mechanisms in humans.
Scientific review:
https://pubmed.ncbi.nlm.nih.gov/34411377/
Reishi and the Gut Microbiome
In recent years, research into the gut microbiome has expanded rapidly, and Ganoderma lucidum has also attracted considerable scientific interest in this field.
A study published in Nature Communications investigated a water extract of Ganoderma lucidum mycelium in mice fed a high-fat diet.
Researchers observed changes in gut microbiota composition, intestinal barrier function, inflammatory processes, and insulin resistance. Some of the observed effects were associated with high-molecular-weight Ganoderma polysaccharides.
This was a preclinical animal study, and its findings have provided an interesting basis for further investigation.
One of the important questions for future research is whether similar microbiome changes can also be observed in humans and which Ganoderma polysaccharides have the greatest influence.
Study in Nature Communications:
https://www.nature.com/articles/ncomms8489
PubMed:
https://pubmed.ncbi.nlm.nih.gov/26102296/
Reishi, the Brain and the Nervous System
Increasing attention in Ganoderma lucidum research is being directed towards the brain, nervous system, and neurodegenerative processes.
Laboratory and animal models are being used to investigate several mechanisms, including oxidative stress, neuroinflammation, neuronal protection, and other processes associated with brain ageing.
This field is particularly interesting because oxidative stress and chronic inflammation are studied in connection with many age-related changes in the nervous system.
Research into Ganoderma lucidum and its bioactive compounds in the nervous system continues. Future studies may help determine which Reishi compounds are most significant and how mechanisms observed in preclinical models translate to humans.
Comprehensive scientific review:
https://pubmed.ncbi.nlm.nih.gov/34411377/
Reishi, Alzheimer’s Disease and Dementia Research
In recent years, there has been particular scientific interest in Ganoderma lucidum in Alzheimer’s disease and dementia research.
Researchers are investigating processes associated with neuroinflammation, oxidative stress, beta-amyloid metabolism, neuronal damage, and other mechanisms involved in neurodegeneration.
Research into Ganoderma lucidum and its bioactive compounds in the field of neurodegeneration continues. Particular attention is being paid to how polysaccharides and triterpenoids may interact with processes associated with brain ageing and nerve-cell function.
Larger human clinical studies may eventually help researchers better evaluate the significance of mechanisms observed in preclinical research.
Ganoderma lucidum scientific literature review:
https://pubmed.ncbi.nlm.nih.gov/34411377/
Reishi and Inflammatory Processes
Inflammatory processes represent another important area of Ganoderma lucidum research.
Scientists are studying how Reishi polysaccharides, beta-glucans, and triterpenoids interact with different inflammatory signalling pathways and immune cells.
Experimental research has described anti-inflammatory biological activity of Ganoderma compounds, generating considerable interest in the mechanisms behind these effects.
Research into the anti-inflammatory mechanisms of Ganoderma lucidum continues, with scientists examining in increasing detail how Reishi polysaccharides and triterpenoids may influence inflammatory signalling pathways, immune-cell activity, and other mechanisms associated with inflammatory processes.
Further clinical studies are needed to determine the significance of these compounds in the human body and their potential practical applications.
Scientific review:
https://pubmed.ncbi.nlm.nih.gov/34411377/
Reishi and Cancer Research
Cancer biology is one of the most extensively studied and at the same time most complex areas of Ganoderma lucidum research.
In laboratory and preclinical research, Reishi polysaccharides and triterpenoids are studied in relation to immune-response mechanisms, cell proliferation, apoptosis, and other processes relevant to tumour biology.
Human clinical research has also been conducted.
A Cochrane systematic review examined five randomized controlled trials involving a total of 373 participants. The review identified interesting findings relating to certain immune-function and tumour-response measures, while the authors emphasized the need for larger and higher-quality clinical trials.
Research into Ganoderma lucidum in the oncology context therefore continues, particularly regarding the mechanisms of its bioactive compounds and their possible complementary role.
Cochrane systematic review:
https://www.cochrane.org/evidence/CD007731_g-lucidum-reishi-mushroom-cancer-treatment
Reishi and the Ageing Process
And this brings us back to Reishi’s historical name — the “mushroom of immortality.”
Modern science does not view ageing as a single process. Instead, it is understood as a highly complex interaction between numerous biological mechanisms.
Interestingly, Ganoderma lucidum research examines several processes that are also important in the science of ageing:
oxidative stress;
chronic inflammation;
immune-system function;
glucose metabolism;
lipid and cholesterol metabolism;
the gut microbiome;
the nervous system and brain ageing;
cell-protection mechanisms.
The historical term “mushroom of immortality” should not be interpreted literally. Nevertheless, it is fascinating that a mushroom that has symbolized longevity and vitality in Asian culture for centuries is now being investigated in relation to so many biological processes relevant to ageing.
Comprehensive scientific review:
https://pubmed.ncbi.nlm.nih.gov/34411377/
Why Is Reishi Called the “Mushroom of Immortality”?
The name “mushroom of immortality” is a historical and cultural designation with roots in ancient China.
Lingzhi was considered a rare and valuable mushroom and was historically associated with longevity, vitality, and well-being.
The traditional use of Ganoderma mushrooms in Asia has been documented for more than 2,000 years.
Modern science is now attempting to understand whether and how these ancient traditions may relate to Reishi’s unusually rich chemical composition.
Ganoderma lucidum contains polysaccharides, beta-glucans, triterpenoids, ganoderic acids, and numerous other bioactive compounds, whose properties continue to be studied in laboratories and clinical research around the world.
Research on the history and biological activity of Ganoderma:
https://pubmed.ncbi.nlm.nih.gov/35516772/
Comprehensive Ganoderma lucidum pharmacological review:
https://pubmed.ncbi.nlm.nih.gov/34411377/
What Is Science Currently Investigating About Reishi?
Ganoderma lucidum provides a fascinating example of how more than 2,000 years of traditional use can meet modern molecular biology, pharmacology, and clinical research.
Scientists currently investigate Reishi in relation to an exceptionally broad range of processes:
immune function, inflammation, oxidative stress, stress and fatigue, sleep and the nervous system, blood sugar and glucose metabolism, cholesterol and lipid metabolism, blood pressure and vascular function, liver function, the gut microbiome, brain ageing, mechanisms associated with Alzheimer’s disease and dementia, and cellular processes in cancer research.
Human studies have already been conducted in some of these areas, while in others most available data still come from laboratory and animal models.
This is precisely why Reishi research continues — scientists are working to determine which Ganoderma lucidum compounds are most biologically significant, how they work, what forms of standardization are most appropriate, and how mechanisms observed in laboratory research translate to the human body.
Comprehensive scientific review:
https://pubmed.ncbi.nlm.nih.gov/34411377/
More than two thousand years after the earliest written references to Lingzhi, the “mushroom of immortality” remains an active subject of scientific research.
Today, however, instead of ancient texts alone, researchers are exploring its secrets through laboratory analysis, molecular biology, and clinical studies.
Important information: The information in this article is provided for educational and informational purposes. It describes areas of scientific research and findings from published studies. Results from laboratory and animal studies may differ from those observed in humans, and research in many of these areas is still ongoing. This information is not a substitute for advice from a doctor or another qualified healthcare professional.
