
Mushrooms are a nutritious food with a distinctive flavor, packed with vitamins, minerals, and antioxidants. They are low in calories, fat, and salt and are an excellent source of B vitamins, vitamin D, and several essential minerals. They also have therapeutic properties, including improved gut health, heart health, and immunity. While mushrooms do contain carbohydrates, the amount varies depending on the type of mushroom and is generally low, making them suitable for low-carb diets like the keto diet. So, are mushrooms a complex carb? Let's find out.
| Characteristics | Values |
|---|---|
| Carbohydrates | Yes |
| Carbohydrate type | Dietary fibre (complex) |
| Carbohydrate content | Varies depending on the type of mushroom |
| White button mushroom | 3.1g of carbs per 96g |
| Oyster mushroom | 9.52g of total carbs per piece, with 3.6g from fibre |
| Portabella mushroom | 4.26g of total carbs per piece, with 1.3g from fibre |
| Shiitake mushroom | 1.3g of total carbs per 19g |
| White mushroom | 3.26g of carbs per 100g |
| Portobello mushroom | 3.87g of carbs per 100g |
| Oyster mushroom | 6.09g of carbs per 100g |
| Shiitake mushroom | 6.79g of carbs per 100g |
| Raw mushroom | 2.3g of total carbs per cup |
| Keto-friendly | Yes |
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What You'll Learn

Mushrooms are a good source of dietary fibre, a complex carb
Mushrooms are a good source of dietary fibre, a type of complex carbohydrate. They are often consumed for their nutritional value and distinctive flavour. Mushrooms are low in calories, fat, and salt, while being an excellent source of B vitamins, vitamin D, and several essential minerals. They also contain antioxidant compounds, which have been shown to fight oxidative stress and inflammation, contributing to the prevention of chronic diseases and signs of ageing.
The amount of carbohydrates in mushrooms varies depending on the type. For example, a 100-gram serving of white mushrooms contains 3.26 grams of carbohydrates, while the same serving of oyster mushrooms contains 6.09 grams. Despite these variations, mushrooms are generally considered to have a low carbohydrate content, making them suitable for low-carb diets such as the keto diet.
Most carbohydrates in mushrooms are classified as dietary fibres, including chitin and beta-glucan polysaccharides. These complex molecules are too large for the body to digest, so they pass through the intestines relatively unchanged. This provides various benefits, such as improved gut health, heart health, and immunity. Dietary fibres act as prebiotics, fuelling the gut microbiota, and improving digestion by absorbing water to soften stools and prevent constipation.
In addition to their nutritional benefits, mushrooms are also a good source of protein and other micronutrients, including copper, potassium, phosphorus, and iron. These nutrients contribute to energy production, nerve and muscle function, and the synthesis of essential compounds in the body. Overall, mushrooms are a versatile and nutrient-dense food that can complement a balanced diet and support overall health and well-being.
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Carbohydrates are one of three primary macronutrients
Carbohydrates are indeed one of three primary macronutrients, along with fat and protein. Macronutrients are nutrients that the body needs in large amounts to function, and they provide the body with calories (energy) and the building blocks for cellular growth, immune function, and overall repair. Carbohydrates, in particular, are the body's preferred fuel source, as they are easily converted into glucose, which can be used as energy or stored for later. They are primarily found in grains, fruits, beans, and starchy vegetables.
While the body does not require carbohydrates to function, as it can use ketones from fat for energy, carbohydrates are still an important part of a healthy diet. The healthiest sources of carbohydrates provide the body with fiber, vitamins, minerals, and phytochemicals. Phytochemicals are compounds found in plants that can help fight diseases. These include unprocessed whole grains, beans, vegetables, and fruits.
It is important to note the difference between whole carbs and refined carbs. Whole carbs are found in unprocessed foods and contain natural fiber, while refined carbs have been processed and had their natural fiber removed. Examples of refined carbs include white pasta, white bread, white rice, and sugar-sweetened fruit juices. A diet high in refined carbs and added sugar can lead to obesity, weight gain, diabetes, and heart disease.
Mushrooms are a food that contains carbohydrates, specifically dietary fibers, which are complex carbohydrate molecules. These fibers pass through the intestines relatively unchanged, acting as prebiotics for the gut microbiota and improving digestion. They also have potential health benefits, such as improved gut health, heart health, and immunity. Mushrooms are also low in calories, fat, and salt, while being a source of B vitamins, vitamin D, and essential minerals.
Overall, carbohydrates are a vital part of a balanced diet, and mushrooms are a healthy and nutritious source of these macronutrients.
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Mushrooms are keto-friendly due to their low carb content
Mushrooms are a nutritious food, packed with vitamins, minerals, and antioxidants. They are low in calories, fat, and salt and are an excellent source of B vitamins, vitamin D, and several essential minerals. They are also a source of fibre and protein.
The ketogenic diet, or keto diet, is a low-carb, high-fat, and moderate-protein diet. The body is forced to burn fat for energy instead of carbohydrates, with protein and fat becoming the primary energy sources. This means that people on a keto diet must eat a low amount of carbohydrates each day to put their body into a state of ketosis, where the body uses ketone bodies instead of glucose as its primary energy source.
Mushrooms are keto-friendly due to their low carbohydrate content. Common types of mushrooms, such as white button, portobello, oyster, and shiitake mushrooms, are low in carbohydrates and keto-friendly in their natural form. They can be enjoyed raw or cooked and used in a variety of dishes suitable for a keto diet.
However, it is important to note that not all mushroom products are keto-friendly. Canned or packaged mushroom products, such as mushroom soup, tend to be higher in carbohydrates, so it is essential to read the nutrition labels. Additionally, while mushrooms are generally low in carbs, their net carbohydrate content varies across different types of mushrooms. Therefore, it is advisable to be mindful of your daily carb allowance and overall carb intake when including mushrooms in your keto diet.
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Carbohydrates can be subdivided into sugars, starches and fibres
Carbohydrates are one of the three primary macronutrients, along with fat and protein. They can be subdivided into three main dietary categories: sugars, starches, and fibres. Sugars are simple carbohydrates, including glucose and fructose, which the body can easily absorb and rapidly convert into energy. This is why eating foods high in sugar often leads to an energy peak, followed by a crash. Starches, on the other hand, are complex carbohydrates made up of multiple glucose molecules bound together. The body absorbs starches more slowly than sugars, providing a steadier release of energy. This is why dieticians often recommend eating more complex carbohydrates, such as beans and whole grains.
Fibres are even more complex carbohydrate molecules. They are so large that the body cannot digest them, so they pass through the intestines relatively unchanged. This gives them a range of potential health benefits. For example, fibres act as prebiotics, providing fuel for the gut microbiota, and they improve digestion by absorbing water to soften stools and prevent constipation. Dietary fibre has also been linked to maintaining a healthy body weight and reducing the risk of chronic disease.
Mushrooms contain carbohydrates, but the amount varies depending on the type of mushroom. For example, a 100-gram serving of white mushrooms contains 3.26 grams of carbohydrates, while oyster mushrooms and shiitake mushrooms have a slightly higher carb content, with 6.09 grams and 6.79 grams of carbohydrates per 100-gram serving, respectively. Despite these differences, mushrooms are generally considered to have a low carbohydrate content, making them suitable for low-carb diets like the keto diet. They are also a source of fibre, with one cup of raw mushrooms providing 2.3 grams of carbohydrates, including 1 gram of net carbs.
In addition to their low carb content, mushrooms offer several nutritional benefits. They are low in calories, fat, and salt, while being a good source of B vitamins, vitamin D, and essential minerals like copper, potassium, and selenium. Mushrooms also contain antioxidant compounds, which have been linked to various health benefits, including slowing cognitive decline and reducing the risk of chronic diseases. Furthermore, mushrooms are a natural source of key vitamins and minerals that help the body convert food into energy and reduce tiredness and fatigue.
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Mushrooms are a good source of vitamins and minerals
Vitamin D is important for bone and immune health, and mushrooms are the only vegan, non-fortified dietary source of this vitamin. The amount of vitamin D in mushrooms depends on their exposure to UV light. Mushrooms exposed to UV light either by sunlight or a UV lamp will have higher amounts of vitamin D. Mushrooms also contain vitamin B6, which helps the body form red blood cells, and vitamin B2 (riboflavin), which helps the body convert food into energy.
Mushrooms are a source of selenium, an essential mineral that contributes to normal immune function. Cremini mushrooms are an excellent source of zinc, which is important for the immune system and for ensuring optimal growth in infants and children. Mushrooms are also a rich source of potassium, which can help to reduce blood pressure by lessening the tension in blood vessels.
Mushrooms are a nutrient-dense food that can complement a balanced diet, whether or not one is following a keto diet. They are a good source of dietary fibre, which has been linked to maintaining a healthy body weight and decreasing the risk of chronic disease.
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Frequently asked questions
Mushrooms are a complex carb as they are a source of dietary fiber. They include chitin and beta-glucan polysaccharides, which are associated with various health benefits, such as improved gut health, heart health, and immunity.
Complex carbohydrates are starches made up of multiple glucose molecules bound together. They are found in whole foods like vegetables, whole grains, legumes, and mushrooms.
Dietary fibers are beneficial because the body cannot digest them, so they act as prebiotics that fuel the gut's helpful microorganisms. They also improve digestion and have been linked to maintaining a healthy body weight and reducing the risk of chronic disease.
Yes, mushrooms are keto-friendly as they are low in carbohydrates and fat. They are also a source of fibre and protein, making them a versatile ingredient for a ketogenic diet.

























