
Portabella mushrooms are a type of mushroom that is beloved by many for its hearty, beefy, and juicy texture and full flavor. They are low in calories, fat, and carbohydrates, making them a popular food choice for people on a ketogenic diet. In fact, portabella mushrooms are considered one of the most keto-friendly vegetables due to their low net carb content, ranging from 2.2 to 2.57 grams of net carbs per serving or per 100 grams. In addition to their low-carb content, portabella mushrooms offer a good amount of protein and are rich in nutrients such as copper, selenium, vitamin B6, and niacin. They are also versatile in the kitchen and can be grilled, sautéed, or stuffed with various ingredients.
| Characteristics | Values |
|---|---|
| Carbohydrates | 2.2 g of net carbs per serving (1 cup diced) or 2.57 g of net carbs per 100 g serving |
| Calories | 18 calories per 3-ounce serving (about 1 mushroom) or 19 calories per serving |
| Protein | 1.8 g per serving or more than 2 g per mushroom |
| Vitamins | Good source of vitamin B6 and niacin (vitamin B) |
| Minerals | Good source of copper and selenium |
| Fat | Virtually fat-free |
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What You'll Learn

Portabella mushrooms are keto-friendly
Portabella mushrooms are a keto dieter's best friend. With a mere 2.2 grams of net carbs per serving (1 cup diced), they are one of the most keto-friendly vegetables available. Portabella mushrooms are also a good source of protein, with 1.8 grams per serving and more than 2 grams of plant-based protein per mushroom. They are also rich in niacin, a B vitamin that supports the health of the nervous and digestive systems, and vitamin B6, which your body doesn't store, so it's essential to get it through your diet. Portabella mushrooms also contain copper and selenium, which help the body produce thyroid hormones and antioxidants.
Portabella mushrooms are also versatile and can fit into almost any meal. They are perfect for grilling, and their meaty texture and flavour make them a great substitute for high-calorie foods like hamburgers. They can also be sautéed or stuffed with spinach, onions, and feta cheese, or served as part of a caprese salad with sliced tomatoes, fresh basil, and low-fat mozzarella cheese.
The keto diet is a low-carb, high-fat diet that aims to get the body into a metabolic state called ketosis, where it burns fat for fuel instead of carbohydrates. Portabella mushrooms fit perfectly into this scheme, with a low net carb content and a high nutritional value. However, it's important to consider them as part of a balanced keto diet rather than a standalone keto food, as consuming multiple servings throughout the day can push your total carb consumption towards the higher end of your daily limit.
Portabella mushrooms are a great option for anyone looking to add volume to their meals without adding carbs. They are low in calories, with only 18-19 calories per 3-ounce serving, and fat, with less than half a gram of fat per mushroom. This makes them an ideal food for vegetarians and vegans who need to add more protein to their diet.
In conclusion, Portabella mushrooms are keto-friendly, offering a unique combination of low net carb content, high nutritional value, and culinary versatility that complements the framework of a ketogenic diet.
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They are low in calories
Portabella mushrooms are low in calories, with only 18 to 19 calories per 3-ounce serving (approximately one mushroom). This amount accounts for just 1% of a typical 2,000-calorie daily diet for an average adult. Portabella mushrooms are also considered keto-friendly, with a low net carb content of around 2.2 to 2.57 grams of carbohydrates per serving. This makes them an excellent choice for individuals following a ketogenic diet, which typically involves a strict reduction in daily carb intake to around 20-50 grams.
The low-calorie content of portabella mushrooms means they can help individuals manage their weight. For example, grilling portabella mushroom caps instead of high-calorie hamburgers can save over 150 calories without sacrificing taste. Portabella mushrooms are also a good source of protein, with approximately 1.8 to 2 grams of protein per serving. This makes them a valuable option for vegetarians and vegans who need to incorporate more plant-based protein into their diets.
The nutritional composition of portabella mushrooms extends beyond their low-calorie content. They are also rich in niacin, a B vitamin that supports the health of the nervous and digestive systems. Additionally, they contain selenium and copper, essential for producing thyroid hormones, antioxidants, and connective tissue. The specific carbohydrate content in portabella mushrooms is primarily made up of dietary fibre, a type of carb that the body does not digest or absorb.
Portabella mushrooms offer a unique combination of low net carb content and high nutritional value, making them a versatile and delicious addition to any meal. They can be grilled, sautéed, or stuffed with various ingredients to create healthy and flavourful dishes. By tracking their carb intake, individuals can easily incorporate portabella mushrooms into a balanced keto diet without disrupting ketosis.
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They are a good source of protein
Portabella mushrooms are not only low in carbohydrates, but they are also a good source of protein. In fact, each serving of portabella mushrooms (1 cup diced) contains 1.8 grams of protein. This makes them an excellent option for those looking to increase their protein intake while maintaining a low-carb diet.
Portabella mushrooms are a type of mushroom that is known for its large, beefy caps and juicy texture. They are a popular ingredient in vegetarian and vegan diets due to their high protein content and versatility in cooking. With just 2.2 grams of net carbs per serving, portabella mushrooms are considered one of the most keto-friendly vegetables available.
The protein content in portabella mushrooms is in the form of plant-based protein. Each portabella mushroom contains more than 2 grams of plant-based protein, making them a good alternative source of protein for those following a plant-based diet. Portabella mushrooms are also a good source of other essential nutrients, including copper, selenium, and vitamin B6.
Copper, for instance, is essential for forming connective tissue, metabolizing iron, and producing energy and antioxidants in the body. Similarly, selenium plays a crucial role in producing thyroid hormones and antioxidants, as well as regulating the immune system and inflammation. Vitamin B6, on the other hand, supports the health of the nervous and digestive systems.
In addition to their nutritional benefits, portabella mushrooms are also low in calories, making them a weight-management-friendly food. With only 18 to 19 calories per serving, they are a great way to add volume and flavour to meals without increasing calorie intake. This makes portabella mushrooms an excellent option for those looking to manage their weight while still enjoying delicious and nutritious food.
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They are rich in copper and selenium
Portabella mushrooms are not only delicious and hearty but also highly nutritious. While they are low in calories, carbohydrates, and fat, they are rich in copper and selenium. These minerals are essential for various bodily functions and offer multiple health benefits.
Copper is a crucial mineral that plays a vital role in forming connective tissue, metabolizing iron, and producing energy and antioxidants. According to the NIH, a cup of diced portabella mushrooms provides 0.2 milligrams, or 27% of the recommended daily allowance (RDA) of copper. This mineral is essential for maintaining overall health and wellness.
Selenium, another important mineral, has two primary roles in the body. Firstly, it assists in producing thyroid hormones and antioxidants. Secondly, it supports the immune system and helps regulate inflammation. A cup of diced portabellas provides 16 micrograms, or 29% of the RDA for selenium. This mineral duo of copper and selenium in portabella mushrooms contributes significantly to their nutritional value.
The nutritional composition of portabella mushrooms makes them an excellent choice for those following a ketogenic diet. With a low net carb content of around 2.2 to 2.57 grams per serving, they fit perfectly into the dietary requirements of keto. Additionally, portabella mushrooms are a good source of protein, offering 1.8 grams per serving. Their unique combination of low carb, high nutritional value, and culinary versatility makes them a popular and healthy option for keto enthusiasts.
Portabella mushrooms, with their rich content of copper and selenium, offer a multitude of health benefits. By including these mushrooms in your diet, you not only enhance the flavour of your meals but also boost your intake of these essential minerals, contributing to a healthier and more nutritious lifestyle.
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They are high in niacin
Portabella mushrooms are a nutrient-dense food that offers a range of health benefits. They are a good source of vitamin B3, also known as niacin. Niacin is a water-soluble vitamin that plays a crucial role in various bodily functions. For instance, it is needed to produce two important coenzymes: nicotinamide adenine dinucleotide (NAD) and nicotinamide adenine dinucleotide phosphate (NADP). These coenzymes are essential for over 400 enzymes involved in processes such as DNA repair, fatty acid synthesis, antioxidant systems, detoxification, and hormone synthesis.
Portabella mushrooms provide a significant amount of niacin, with one cup of diced portobello mushrooms supplying 3.87 milligrams of niacin, which is approximately 24 to 27 percent of the recommended dietary allowance (RDA). This makes portabella mushrooms an excellent natural source of this important nutrient.
Niacin has a wide range of health benefits and therapeutic potential. It is good for the digestive system and helps maintain healthy skin. Additionally, niacin may offer protective effects against cardiovascular disease, hyperlipidemia, cancer, and type 1 diabetes. Some research even suggests that niacin may have beneficial effects on health outcomes for patients with HIV or schizophrenia.
Portabella mushrooms, also known as Agaricus bisporus, are the mature form of this variety of mushrooms. They are fully mature, while the immature white mushrooms are known as common or white mushrooms, and the brown immature mushrooms are called cremini or baby bellas. As portabella mushrooms mature, they lose water content, resulting in a more concentrated and intense earthy, umami flavor, along with a dense, meaty texture. This makes them a popular vegetarian alternative to meat, commonly used as replacements for steak or burgers.
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Frequently asked questions
Yes, portabella mushrooms are a keto-friendly food due to their low net carb content. A serving of portabella mushrooms (1 cup diced) contains 2.2 g of net carbs. For every 100 grams of Portobello mushrooms, there are 2.57 grams of net carbohydrates.
There are 2.2 g of net carbs in a serving of portabella mushrooms, which is about 1 cup diced. A large portobello mushroom cap has fewer than 4 grams of carbohydrates.
Portabella mushrooms are high in niacin, a B vitamin that supports the health of the nervous and digestive systems. They are also a good source of protein, with 1.8 g per serving. Portabella mushrooms are also minimally processed and free of harmful ingredients like non-keto sweeteners, highly refined oils, and food additives.

























