Mushroom Nutrition Facts and Health Benefits


Verywell / Alexandra Shytsman

Mushrooms are fungi, which is a separate kingdom of life from plants and animals. Technically, they are not a vegetable, but they are often used and served as a vegetable in recipes. They are a low-calorie, high-fiber food choice that can be used diversely in cooking. Mushrooms add a savory flavor to recipes but are very low in sodium, making them a healthy choice.

Mushroom Nutrition Facts

The following nutrition information is provided by the USDA for 1 cup (70g) raw mushroom pieces or slices.

  • Calories: 15
  • Fat: 0.2g
  • Sodium: 4mg
  • Carbohydrates: 2.3g
  • Fiber: 0.7g
  • Sugars: 1.4g
  • Protein: 2.2g


One cup of raw mushrooms contains only 15 calories and 2.3 grams of carbohydrate. Mushrooms are also a good source of fiber, particularly the soluble fiber beta-glucan.

Mushrooms have a naturally low glycemic index, and studies have even been done on the effects of medicinal mushrooms for diabetes control. There is not sufficient, conclusive evidence on the use of mushrooms for diabetes, however.

The glycemic load of a food item takes into account serving size, and, for mushrooms, it is estimated to be low at a value of 2. Mushrooms are presumed to have little negative effect on blood glucose or insulin response due to their low carbohydrate content.


Mushrooms have only a minuscule amount of fat, most of which is polyunsaturated fat. As a result, mushrooms are considered a heart-healthy food choice.


Mushrooms provide a small amount of protein: 2.2 grams per cup. This is only 4% of your daily needs, so you should be sure to eat protein-rich foods, such as legumes, nuts, dairy, meat, or fish, as part of a balanced diet.

Vitamins and Minerals

Mushrooms are full of micronutrients. They are a good source of copper, niacin (vitamin B3), pantothenic acid (vitamin B5), potassium, phosphorus, and iron. B vitamins assist in the release of energy from carbohydrate, protein, and fat.

Copper assists in energy production and iron utilization. It also maintains the integrity of connective tissues and assists antioxidant enzymes. Potassium is important for maintaining fluid and electrolyte balance. It is also required for proper nerve and muscle conduction and may help to lower blood pressure. Iron is a mineral that is needed for the synthesis of hemoglobin, DNA, amino acids, neurotransmitters, and certain hormones.

Health Benefits

A total of 126 health-related functions are thought to be produced by medicinal mushrooms and fungi. Research is ongoing about the potential for using mushrooms to improve health, prevent, or manage health conditions.

In addition to the many vitamins and minerals mushrooms contain, they have also been found to have high levels of some antioxidant compounds. All of these compounds can be beneficial to health.

Fights Cell Damage

Antioxidants have been shown to fight oxidative stress and inflammation, which contribute to signs of aging and to the development of chronic diseases. Several varieties of mushrooms, such as porcini and white button mushrooms, are high in the antioxidants glutathione and ergothioneine, which are not found in many other plant foods.

Improves Brain Function

Consuming mushrooms may also help slow the cognitive decline that comes with aging, according to both the antioxidant research above and a study of over 600 people aged 60 and over.

Supports Bone Health

Some mushrooms sold in stores have been treated with UV light to increase their vitamin D stores. These treated mushrooms are one of the best sources of vitamin D. Vitamin D is important for healthy bones. Eating these mushrooms has the same benefit as getting vitamin D from supplements or from sun exposure.

Normally, mushrooms are not a good source of vitamin D. The exception is wild mushrooms, but eating them can be risky if you are unable to determine which are edible and which are toxic.

Lowers Risk of Diabetes

Mushrooms are a good source of fiber. Consuming dietary fiber has many health benefits, including a lower risk of type 2 diabetes, lowered cholesterol levels, improved weight control.


Food allergies to mushrooms are rare but have been reported. You may have a cross-reaction if you are allergic to molds.

Adverse Effects

Some species of mushrooms can interact with alcohol in unpleasant ways. The inky cap mushroom contains coprine, which acts like the drug Antabuse, causing a racing heart, flushing, tingling, and other symptoms when you ingest alcohol as long as five days after eating the mushroom. Some other mushrooms cause digestive distress in susceptible people who consume alcohol alongside the mushroom dish.

The biggest concerns with adverse effects, however, are with wild mushrooms and the wide variety of poisonous substances they can contain. Effects of ingesting a toxic wild mushroom variety may include gastrointestinal irritation with nausea, cramps, vomiting, and diarrhea and may either pass on their own or be severe enough to require hospitalization.

Other mushroom toxins can affect the involuntary nervous system, kidneys, and liver, or are carcinogenic. Some of these toxins have no antidote and can be fatal within hours. Hallucinogenic mushrooms contain psilocybin and related compounds that produce psychological and perceptual effects.


There are many types of culinary mushrooms, ranging from white button, crimini, shiitake, portabella, enoki, cloud ear, and more. The largest cultivated mushroom is the portabella, which can grow up to 6 inches in diameter.

Micro- and macro-nutrient levels can vary among different types of mushrooms. For example, white mushrooms have slightly more calcium, while shiitake mushrooms have more fiber. But in general, most edible varieties contain important vitamins and minerals like vitamin C, vitamin B-6, magnesium, phosphorous, potassium, copper, folate, and zinc.

Dried and canned mushrooms can also be found all year long. Dried mushrooms tend to have more calories and other nutrients than raw varieties because they are more concentrated. When they are rehydrated before cooking or eating, their nutrition will be comparable to raw versions. Canned mushrooms are often a little higher in calories, and significantly higher in sodium, than raw mushrooms due to additives.

When They're Best

Fresh mushrooms are available all year long, with the peak season in the United States being April through June. Wild mushrooms are available seasonally, usually in the summer and fall.

Storage and Food Safety

Many wild mushrooms are deadly and can look like the safe varieties, so it is risky to gather wild mushrooms on your own for eating. Wild mushrooms that are sold by reputable purveyors should be safe to eat.

Many people use mushrooms, such as white button, to chop up and put in salads raw. Some experts suggest that you're better off cooking mushrooms because cooking helps to release the vitamins and minerals. Certain varieties of raw mushrooms contain small amounts of toxins, including a compound that is considered carcinogenic, which is destroyed through cooking. However, cooking will not render highly toxic mushrooms safe to eat.

When shopping for mushrooms, look for fresh mushrooms that are clean and free of blemishes, such as soft, moist spots and discoloration. Fresh mushrooms can be stored in the refrigerator in an open container for about five days. Do not wash them until just before use.

How to Prepare

Mushrooms can be cooked in a variety of ways, including grilling, baking, broiling, sauteing, and roasting. They are a hearty, vegetarian ingredient that can add texture, flavor, and substance to meals. Use mushrooms when making sauces, stews, and soups, or simply chop them up, saute them, and add them to grains, potatoes, or egg dishes.

Mushroom caps serve as a good vehicle for stuffing. Raw mushrooms can hold spreads and dips, or they can be baked with other kinds of stuffing, such as seafood or cheeses mixed with herbs, spices, and vegetables.

Start your day off with a protein and fiber-rich egg and mushroom dish or pair your main course with a side of simple grilled mushrooms. Top healthy pizzas with mushrooms or add them to your sides. Use them as a substitute for meat if you are looking to follow a vegetarian or vegan meal plan.


Was this page helpful?
Article 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.
  1. Fun with funghi: Garnish your meals with mushrooms. Academy of Nutrition and Dietetics. Updated January 17, 2019.

  2. Mushrooms, raw. FoodData Central. U.S. Department of Agriculture. Published April 1, 2019.

  3. Nakashima A, Yamada K, Iwata O, et al. β-Glucan in foods and its physiological functions. J Nutr Sci Vitaminol. 2018;64(1):8-17. doi:10.3177/jnsv.64.8

  4. Lo HC, Wasser SP. Medicinal mushrooms for glycemic control in diabetes mellitus: History, current status, future perspectives, and unsolved problems (review). Int J Med Mushrooms. 2011;13(5):401-26. doi:10.1615/IntJMedMushr.v13.i5.10

  5. Institute of Medicine (US) Panel on Micronutrients. Dietary Reference Intakes for vitamin A, vitamin K, arsenic, boron, chromium, copper, iodine, iron, manganese, molybdenum, nickel, silicon, vanadium, and zinc. Washington (DC): National Academies Press (US); 2001.

  6. Potassium. Fact Sheet for Professionals. National Institutes of Health Office of Dietary Supplements. Updated March 2, 2020

  7. Iron. Fact Sheet for Professionals. National Institutes of Health Office of Dietary Supplements. Updated December 19, 2019

  8. Wasser SP. Medicinal mushroom science: History, current status, future trends, and unsolved problemsInt J Med Mushrooms. 2010;12(1):1-16. doi:10.1615/IntJMedMushr.v12.i1.10

  9. Chaturvedi VK, Agarwal S, Gupta KK, Ramteke PW, Singh MP. Medicinal mushroom: Boon for therapeutic applications3 Biotech. 2018;8(8):334. doi:10.1007/s13205-018-1358-0

  10. Cheung PCK. The nutritional and health benefits of mushrooms. Nutr Bull. 2010;35(4):292-299. doi:10.1111/j.1467-3010.2010.01859.x

  11. Kalaras MD, Richie JP, Calcagnotto A, Beelman RB. Mushrooms: A rich source of the antioxidants ergothioneine and glutathione. Food Chem. 2017;233:429-433. doi:10.1016/j.foodchem.2017.04.109

  12. Feng L, Cheah IK, Ng MM, et al. The association between mushroom consumption and mild cognitive impairment: A community-based cross-sectional study in Singapore. J Alzheimers Dis. 2019;68(1):197-203. doi:10.3233/jad-180959

  13. Vitamin D. Fact Sheet for Professionals. National Institutes of Health Office of Dietary Supplements. Updated March 24, 2020

  14. Keegan RJ, Lu Z, Bogusz JM, Williams JE, Holick MF. Photobiology of vitamin D in mushrooms and its bioavailability in humans. Dermatoendocrinol. 2013;5(1):165-76. doi:10.4161/derm.23321

  15. McRae MP. Dietary fiber intake and type 2 diabetes mellitus: An umbrella review of meta-analyses. J Chiropr Med. 2018;17(1):44-53. doi:10.1016/j.jcm.2017.11.002

  16. Ferreira H, Alves M, Pineda F et al. Cross-reactivity between molds and mushrooms. Pediatr Allergy Immunol and Pulmonol. 2017;30(2):126-128. doi:10.1089/ped.2017.0746

  17. North American Mycological Association. Mushroom poisoning syndromes.

  18. North American Mycological Association. Mushroom Poisoning Syndromes.

  19. National Institute on Drug Abuse. Hallucinogens DrugFacts. What are hallucinogens? Updated April 2019.

  20. Nardozzi, C. The National Gardening Association. Learning Library. Edible Landscaping - Edible of the Month: Two Simple, Beginner Mushrooms.

  21. U.S. Department of Agriculture. FoodData Central. Mushrooms, white, raw. April 1, 2019.

  22. U.S. Department of Agriculture. FoodData Central. Mushrooms, shiitake, raw. April 1, 2019.

  23. U.S. Department of Agriculture. FoodData Central. Mushrooms, raw. October 30, 2020.

  24. Mushrooms, canned. FoodData Central. U.S. Department of Agriculture. Published April 1, 2019.