
Medicinal mushrooms have been used for thousands of years, but their recent surge in popularity as a supplement has brought them under the spotlight. Touted as a savoury superfood, mushrooms are said to have a wide range of health benefits, from boosting energy and immunity to improving mood, sleep, and digestion. However, despite their long history of use and the recent boom in sales of mushroom supplements, the question of their safety remains. While generally safe to consume, there are some potential side effects and other considerations to be aware of.
| Characteristics | Values |
|---|---|
| Safety | Generally considered safe when consumed in recommended dosages. However, individuals with certain health conditions (e.g., autoimmune diseases, mushroom allergies), pregnant or breastfeeding women, and people on immunosuppressive medications should exercise caution and consult a healthcare provider. |
| Health Benefits | Enhanced immune function, stress relief, improved cognitive performance, better sleep, reduced fatigue, improved digestion, increased energy, improved skin radiance, reduced risk of cancer, improved heart health, anti-inflammatory properties, improved mood, and more. |
| Risks and Side Effects | May increase the risk of bleeding. Can interact with certain medications, including anticoagulants, antiplatelet drugs, high blood pressure medications, herbs, and other supplements. Overconsumption can lead to digestive issues such as nausea, diarrhea, or an upset stomach. |
| Recommended Dosage | Varies depending on the specific mushroom variety and individual factors such as age and overall health. There is no standard dosage, and optimal doses for specific conditions are not well established. |
| Sourcing | Choose reputable manufacturers to ensure quality and safety. Look for supplements that are free of fillers, additives, and unnecessary binders. Prefer certified USDA organic and independently lab-tested products. |
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What You'll Learn

Safe for most, but not all
Mushroom supplements are generally safe for most people when consumed in recommended dosages. However, it's important to consult a healthcare professional if you have any underlying health conditions, as they may not be suitable for everyone.
Mushroom supplements have soared in popularity due to their purported health benefits, ranging from enhanced immune health to reduced stress and improved cognitive performance. The effects may vary depending on the individual and the specific type of mushroom. Some common mushrooms used in supplements include reishi, maitake, and lion's mane. These mushrooms have been celebrated for their medicinal properties and potential health advantages.
However, it's essential to exercise caution if you have certain health conditions. For instance, individuals with autoimmune diseases, mushroom allergies, or those who are pregnant or breastfeeding should consult their healthcare provider before taking mushroom supplements. Additionally, people on immunosuppressive medications or specific drugs, such as anticoagulants or antiplatelet medications, should seek medical advice due to potential interactions.
The quality and safety of mushroom supplements also depend on sourcing them from reputable manufacturers. Some products may contain contaminants or fail to meet potency claims, leading to potential health risks. Therefore, it's crucial to follow the manufacturer's guidelines and choose supplements that are certified organic and independently lab-tested.
Furthermore, while mushrooms have been used in traditional medicine for centuries, particularly in Asian cultures, Western medicine is still catching up in terms of integrating them into conventional therapeutic practices. More clinical trials and research are needed to standardize and fully understand the effects of mushroom supplements on humans.
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Risks for those with autoimmune diseases or mushroom allergies
Mushroom supplements are generally considered safe for most people. However, individuals with certain health conditions, such as autoimmune diseases or mushroom allergies, should exercise caution.
Risks for those with autoimmune diseases
Autoimmune diseases are conditions in which the body's immune system mistakenly attacks healthy cells. Mushroom supplements have been shown to have immunomodulating effects, which means they can affect the way the immune system functions. While this can be beneficial in some cases, it is important to understand how mushroom supplements may interact with a specific autoimmune disease before taking them.
In some cases, mushroom supplements have been reported to trigger a flare-up of HMGCR immune-mediated necrotising myopathy (IMNM), a rare autoimmune disease. This disease is typically associated with statin use, but there have been reports of it developing in patients who consume significant amounts of mushrooms or mushroom supplements. However, these reports are anecdotal, and mushrooms have not been definitively proven to be a risk factor for IMNM.
It is important for individuals with autoimmune diseases to consult their healthcare provider before taking mushroom supplements to ensure they are safe and will not interfere with any existing treatments.
Risks for those with mushroom allergies
Mushroom supplements may also pose risks for individuals with mushroom allergies. Allergic reactions to mushroom supplements can range from mild digestive discomfort and skin rashes to more severe reactions such as anaphylaxis. It is important to note that even if someone does not have a mushroom allergy, they may still experience gastrointestinal discomfort due to the high concentration of beta-glucans and other bioactive compounds in mushroom supplements. Therefore, it is recommended to start with a small dose to assess tolerance and consult a healthcare provider if any adverse reactions occur.
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Risks for pregnant or breastfeeding women
While mushrooms are generally considered safe to eat during pregnancy, there is limited research on the safety of mushroom supplements for pregnant and breastfeeding women. Therefore, it is recommended that they are not consumed by this group unless advised by a medical professional.
Lack of Research
There is very little scientific research into the effects of mushroom supplements on pregnant and breastfeeding women. This lack of research makes it difficult to determine the safety of these supplements for this vulnerable group.
Potential Risks
The potential risks of consuming mushroom supplements during pregnancy and breastfeeding include:
- Contamination and impurities: The quality and purity of mushroom supplements can vary, and contamination or impurities could pose a risk to the mother and developing baby.
- Individual sensitivities: Some people may have sensitivities or allergies to mushrooms, which could potentially be dangerous during pregnancy.
- Drug interactions: Mushroom supplements may interact with other medications, which could be harmful during pregnancy.
Expert Recommendations
Due to the lack of research and potential risks, health experts generally advise against the use of mushroom supplements during pregnancy and breastfeeding. It is recommended that pregnant and breastfeeding women consult a healthcare provider before consuming any mushroom supplements to weigh the potential risks and benefits.
Safe Alternatives
While mushroom supplements may not be recommended, cooked, culinary mushrooms are often considered safe to be included in a pregnant woman's diet. Edible mushrooms like shiitake, maitake, and oyster mushrooms are generally safe and provide various nutrients beneficial during pregnancy, such as vitamins, minerals, and antioxidants.
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Overconsumption may cause digestive issues
While mushroom supplements are generally safe for most people when consumed in recommended dosages, overconsumption may cause digestive issues.
Mushroom supplements have soared in popularity, with people taking them for a multitude of reasons, from enhancing immune health to reducing stress, improving sleep, and achieving better mental clarity and focus. The best mushroom supplements can lend day-to-day benefits like better brain function, a healthier immune system, more energy, and better sleep.
However, it is crucial to follow the manufacturer's guidelines and consult a healthcare provider if you have any underlying health conditions, are pregnant or breastfeeding, or are taking any medications. This is because mushroom supplements can interact with certain drugs, such as anticoagulants or antiplatelet medications, and may increase the risk of bleeding.
Additionally, overconsumption of mushroom supplements can lead to digestive issues such as nausea, diarrhea, or an upset stomach. This is due to the high fibre content of mushrooms, which can cause digestive distress if consumed in excessive amounts. It is also important to source mushroom supplements from reputable manufacturers to ensure quality and safety. Some products may contain contaminants or may not meet the claimed potency, leading to ineffective or harmful results.
To avoid overconsumption, it is recommended to follow the suggested dosage on the product label and consult a healthcare professional if you have any concerns or questions about the appropriate dosage for your individual needs.
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Sourcing and dosage are critical
Sourcing mushroom supplements from reputable manufacturers is critical to ensure quality and safety. Some products may be contaminated or may not meet the claimed potency, which can lead to harmful or ineffective results. For instance, the U.S. Food and Drug Administration (FDA) does not require manufacturers to prove the safety and efficacy of dietary supplements, so it is important to choose supplements that are certified USDA organic and independently lab-tested by an organization such as NSF.
Additionally, it is important to follow the manufacturer's guidelines for dosage, as overconsumption of mushroom supplements can lead to digestive issues such as nausea, diarrhea, or an upset stomach. The optimal dosage may depend on factors such as age and overall health, so it is recommended to consult a doctor about the right dosage for your specific needs. For example, lion's mane mushroom supplements are recommended at a dosage of 3 to 5 grams per day for improving cognition, while a lower dosage of 350 mg per day was found to be effective in improving cognitive function in older adults with mild Alzheimer's disease symptoms.
Furthermore, it is important to be aware of potential interactions and contraindications. For instance, reishi mushroom supplements may increase the risk of bleeding and may interact with high blood pressure medications, so it is advised to consult a healthcare provider if you are taking any medications or have underlying health conditions.
Overall, sourcing mushroom supplements from reputable manufacturers and following recommended dosages are critical steps to ensure the safety and effectiveness of these supplements.
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Frequently asked questions
For most people, taking mushroom supplements is considered safe when consumed in recommended dosages. However, it is important to follow the manufacturer's guidelines and consult a healthcare provider if you have any underlying health conditions.
Overconsumption of mushroom supplements can lead to digestive issues such as nausea, diarrhea, or an upset stomach. Additionally, some mushroom supplements may contain contaminants or not meet the claimed potency, resulting in ineffective or potentially harmful outcomes.
Individuals with autoimmune diseases, mushroom allergies, or those who are pregnant or breastfeeding should exercise caution and consult a healthcare professional before taking mushroom supplements. Additionally, mushroom supplements may interact with certain medications, such as anticoagulants or immunosuppressive drugs.
Mushroom supplements are celebrated for their purported health benefits, including enhanced immune health, reduced stress, improved cognitive performance, better sleep, and increased energy levels. They are also said to possess medicinal properties with anti-inflammatory, antioxidative, and immunomodulating effects.
It is crucial to source mushroom supplements from reputable manufacturers to ensure quality and safety. Look for supplements that are certified USDA organic, independently lab-tested, and free of fillers, additives, and unnecessary binders. Consulting with a healthcare professional or a nutritionist can also help determine which mushroom supplement is right for you.

























