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Oyster Mushroom Nutrition Facts and Health Benefits
By Malia Frey Malia Frey Malia Frey is a weight loss expert, certified health coach, weight management specialist, personal trainer, and fitness nutrition specialist. Learn about our editorial process Updated on August 24, 2021 Medically reviewed Verywell Fit articles are reviewed by board-certified physicians and nutrition and exercise healthcare professionals. Medical Reviewers confirm the content is thorough and accurate, reflecting the latest evidence-based research.
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Content is reviewed before publication and upon substantial updates. Learn more.
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by Marisa Moore, RDN, MBA Medically reviewed by
Marisa Moore, RDN, MBA Marisa Moore is a registered dietitian nutritionist with a BS in nutrition science and MBA in marketing. She is also the founder of Marisa Moore Nutrition. Learn about our Medical Review Board Print Verywell / Alexandra Shytsman Table of Contents View All Table of Contents Nutrition Facts Health Benefits Allergies Adverse Effects Varieties When It s Best Storage and Food Safety How to Prepare The oyster mushroom is a common type of edible mushroom.
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The fungi got their name because they have a shape and color similar to an oyster. They are often consumed as a food, but oyster mushroom supplements are also available.
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In certain systems of medicine, such as traditional Chinese medicine (TCM), oyster mushrooms are used to treat a variety of health conditions. Oyster mushrooms provide dietary fiber, beta-glucan, and other ingredients that may boost health.
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They have a delicate taste and can be used to add flavor to a wide variety of savory dishes. They can easily be found in most grocery stores, making them a convenient, nutritious addition to your diet. Oyster Mushroom Nutrition Facts One cup of raw, sliced oyster mushrooms (86g) provides 28 calories, 2.9g of protein, 5.2g of carbohydrates, and 0.3g of fat.
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Oyster mushrooms are an excellent source of niacin, fiber, and riboflavin. This nutrition information is provided by the USDA. Calories: 28Fat: 0.3gSodium: 15.5mgCarbohydrates: 5.2gFiber: 2gSugars: 0.95Protein: 2.9gNiacin: 4.27mg
Carbs There are just 28 calories in a cup of raw, sliced oyster mushrooms.
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Most of the calories come from carbohydrates (5.2g). The mushrooms are low in sugar, providing just under 1 gram of naturally occurring sugar. You'll benefit from 2 grams of fiber when you eat them.
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The rest of the carbohydrate in oyster mushrooms is starch. The glycemic load of a 1-cup serving is estimated to be 3, making them a low-glycemic food.
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Fats Oyster mushrooms are nearly fat-free, providing just 0.3 grams per serving. Protein You'll get almost 3 grams of protein when you consume a cup of oyster mushrooms. Vitamins and Minerals Oyster mushrooms are an excellent source of several vitamins, including niacin (providing 21% of your recommended daily intake), riboflavin (18%), and pantothenic acid (11%).
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You'll also get smaller amounts of folate, vitamin B6, and thiamin. Minerals in oyster mushrooms include phosphorus, potassium, copper (10% of your daily needs for each), iron, magnesium, zinc, manganese, and selenium.
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Calories One cup of raw, sliced oyster mushrooms (86g) provides 28 calories, 59% of which come from carbs, 32% from protein, and 10% from fat. Summary Oyster mushrooms are a low-calorie, fat-free, fiber-rich food high in several vitamins and minerals such as phosphorus, copper, and niacin. Health Benefits Oyster mushrooms contain several substances thought to influence health.
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These substances include dietary fiber, beta-glucan, and several other polysaccharides—a class of carbohydrates affecting immune function. Scientific studies on the health benefits of oyster mushrooms are emerging. May Lower Cholesterol A 2015 study found evidence that the dietary fiber component of oyster mushrooms (Pleurotus ostreatus) may be useful in reducing triglyceride accumulation in the liver.
Promotes Heart Health Research shows that whole foods with fiber, such as mushrooms, provide several health effects with few calories, making them a good choice for a healthy eating pattern.
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Several studies have associated a higher intake of fiber with better heart health. Authors of one study specifically said that fiber in vegetables and other foods "makes them attractive targets for disease prevention and reduction of risk of atherosclerosis and cardiovascular disease."
Supports Better Immune Function Oyster mushrooms may enhance immune function, according to a small study published in 2016.
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For the study, participants ingested an oyster mushroom extract for eight weeks. At the study's end, researchers found evidence that the extract might have immune-enhancing effects. Another study reported that oyster mushrooms contain compounds that act as immunomodulators to help to regulate the immune system.
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May Reduce Risk of Cancer Some preliminary research indicates that oyster mushrooms may possess cancer-fighting properties. A 2012 study demonstrated that an oyster mushroom extract might suppress breast cancer and colon cancer growth and spread in human cells. Research is ongoing, with scientists suggesting that more studies are needed to understand the relationship fully.
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Improves Metabolic Health Consuming a diet that includes plenty of fiber-rich vegetables is often recommended by health professionals as a method to reach and maintain a healthy weight. But mushrooms may offer an additional benefit to help you maintain better metabolic health.
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One published study examined the effects of edible mushrooms on obesity. Researchers concluded that "regular consumption of mushrooms is effective in treating metabolic syndrome, including obesity." However, they advised that the practice needs to be combined with regular physical exercise and dietary and lifestyle alterations.
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Allergies There is at least one case report of an allergic reaction to oyster mushrooms. According to the report, a mushroom worker experienced chills, fever, joint pain, and skin rashes after exposure to the mushrooms.
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Symptoms disappeared after a few days. There are other reports of allergic reactions to mushrooms.
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According to one published case study, prior sensitization to mold allergens might explain severe food reactions to cross-reacting mushroom proteins. If you have a mold allergy, you may experience symptoms of oral allergy syndrome when you consume mushrooms. These symptoms may include itchiness or swelling of the mouth, face, lip, tongue, and throat.
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If you have an allergy to mold, speak to your healthcare provider before consuming mushrooms. Adverse Effects Some people who consume certain types of edible mushrooms, especially in large quantities, may experience stomach problems such as nausea, flatulence, diarrhea, or stomach rumbling.
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However, it is unclear if oyster mushrooms can cause those problems. Also, some evidence suggests that mushrooms may interact with gabapentin, a medication traditionally prescribed to manage pain or epilepsy.
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But the limited research did not specifically include oyster mushrooms, and researchers concluded that the interaction might not be clinically significant. Emerging scientific research touts the benefits of taking oyster mushrooms in dietary supplement form. Keep in mind that supplements haven't been tested for safety and dietary supplements are largely unregulated by the Food and Drug Administration (FDA).
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In some cases, the product may deliver doses that differ from the specified amount. In rare cases, the product may be contaminated with other substances such as metals. However, there is little research regarding the safety of supplements in pregnant women, nursing mothers, children, and those with medical conditions or who are taking medications has not been established.
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It is always advisable to check with your doctor before adding oyster mushrooms and/or supplements to your healthcare regimen. Oyster mushroom supplements should not be used as a substitute for standard medical care to treat serious health conditions such as high cholesterol. Lastly, it is safest to consume mushrooms that have been purchased from a legitimate food vendor (such as a grocery store or local market).
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Eating mushrooms that are collected in the wild can lead to mushroom poisoning. Certain wild mushrooms are poisonous and may cause abdominal pain, dizziness, diarrhea, headache, and loss of consciousness. Varieties There are approximately 40 species of oyster mushrooms, such as golden oyster, pink oyster, Phoenix oyster, blue oyster, and many more.
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Each has its own flavor profile, but oyster mushrooms are generally known to have a mild, sweet, woodsy taste. They have a more firm texture than other mushroom varieties, making them an easy addition to hearty recipes.
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Pearl oyster mushrooms are commonly found in North America in hardwood stumps and logs. However, mushroom experts advise that you do not consume the ones you find yourself unless you are certain that they have been properly identified.
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When It s Best Oyster mushrooms are sold as a whole food in many grocery stores. Most varieties can be found year-round as mushroom growers cultivate them throughout the year.
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In the wild, oyster mushrooms are most commonly found in the fall or early spring. When choosing oyster mushrooms, look for dry, firm clusters.
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Avoid mushrooms that are dark, wilted, or too moist. Storage and Food Safety The best way to store oyster mushrooms is to place them in a plastic bag or on a plate covered with plastic wrap in the refrigerator. Some people place the mushrooms in a paper bag in the refrigerator.
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Fresh mushrooms are likely to stay good for about 4 to 7 days. You can also dry mushrooms to make them last longer. To do so, simply place sliced mushrooms on a baking tray and place them in the oven at 150 degrees Fahrenheit for at least an hour.
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Freeze any fresh mushrooms that you don't plan to use right away. Boil them first for 1 to 3 minutes. Then drain thoroughly, seal in airtight bags, and place in the freezer.
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How to Prepare Clean oyster mushrooms before using them in recipes by brushing them with a damp paper towel to remove any dirt. Some people rinse mushrooms, but be sure to dry them completely before use if you choose this method.
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Oyster mushrooms are perfect in egg dishes, soups, savory casseroles, stir-fries, or stews. They make an excellent pizza topping and can also be battered and fried. Many people simply enjoy sautéed mushrooms as a side dish.
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What is Mushroom Coffee? 16 Sources Verywell Fit uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial process to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy.
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Lee KH, Morris-Natschke SL, Yang X, et al. Recent progress of research on medicinal mushrooms, foods, and other herbal products used in traditional Chinese medicine.
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J Tradit Complement Med. 2012;2(2):84-95.
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Minato KI, Ohara A, Mizuno M. A proinflammatory effect of the -glucan from mushroom on macrophage action.
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Mediators Inflamm. 2017;2017:8402405. doi:10.1155/2017/8402405 Mushrooms, oyster, raw.
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FoodData Central. U.S.
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Department of Agriculture. Caz V, Gil-Ramírez A, Largo C, et al. Modulation of cholesterol-related gene expression by dietary fiber fractions from edible mushrooms.
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J Agric Food Chem. 2015;63(33):7371-80. doi:10.1021/acs.jafc.5b02942 Soliman GA.
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Dietary fiber, atherosclerosis, and cardiovascular disease. Nutrients. 2019;11(5):1155.
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doi:10.3390/nu11051155 Tanaka A, Nishimura M, Sato Y, Sato H, Nishihira J. Enhancement of the Th1-phenotype immune system by the intake of Oyster mushroom (Tamogitake) extract in a double-blind, placebo-controlled study.
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J Tradit Complement Med. 2016;6(4):424-430. doi:10.1016/j.jtcme.2015.11.004 Martin KR, Brophy SK.
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Commonly consumed and specialty dietary mushrooms reduce cellular proliferation in Mcf-7 human breast cancer cells. Exp Biol Med.
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2010;235(11):1306-14. doi:10.1258/ebm.2010.010113 Xu T, Beelman RB, Lambert JD. The cancer preventive effects of edible mushrooms.
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Anticancer Agents Med Chem. 2012;12(10):1255-63. doi:10.2174/187152012803833017 Ganesan K, Xu B.
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Anti-obesity effects of medicinal and edible mushrooms. Molecules.
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2018;23(11). doi:10.3390/molecules23112880 Bekci TT, Calik M, Calik SG, Esme H. Oyster mushrooms (pleurotus ostreatus) caused hypersensitivity pneumonitis: Mushroom worker's lung.
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Eur Resp J. 2014;44(58)4023.
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Gabriel MF, González-Delgado P, Postigo I, et al. From respiratory sensitization to food allergy: Anaphylactic reaction after ingestion of mushrooms (Agaricus bisporus). Med Mycol Case Rep. 2015;8:14-16.
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doi:10.1016/j.mmcr.2015.02.003 Hess J, Wang Q, Gould T, Slavin J. Impact of agaricus bisporus mushroom consumption on gut health markers in healthy adults. Nutrients. 2018;10(10):1402.
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doi:10.3390/nu10101402 Toh DS, Limenta LM, Yee JY, et al. Effect of mushroom diet on pharmacokinetics of gabapentin in healthy Chinese subjects. Br J Clin Pharmacol.
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2014;78(1):129-34. doi:10.1111/bcp.12273 Valverde ME, Hernández-Pérez T, Paredes-López O.
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Edible mushrooms: Improving human health and promoting quality life. Int J Microbiol. 2015.
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doi:10.1155/2015/376387 Cordeiro F, Llorente-Mirandes T, López-Sánchez JF, et al. Determination of total cadmium, lead, arsenic, mercury and inorganic arsenic in mushrooms: Outcome of IMEP-116 and IMEP-39. Food Addit Contam Part A Chem Anal Control Expo Risk Assess.
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2015;32(1):54-67. doi:10.1080/19440049.2014.966336 Eren SH, Demirel Y, Ugurlu S, Korkmaz I, Aktas C, Güven FM.
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Mushroom poisoning: Retrospective analysis of 294 cases. Clinics (Sao Paulo). 2010;65(5):491–496. doi:10.1590/S1807-59322010000500006 By Malia Frey
Malia Frey is a weight loss expert, certified health coach, weight management specialist, personal trainer, and fitness nutrition specialist. See Our Editorial Process Meet Our Review Board Share Feedback Was this page helpful?
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