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Are Mushrooms Keto-Friendly?

Mushrooms on a kitchen counter

If you're asking "Are Mushrooms Keto-Friendly?" the answer is a resounding yes.

In this article, we'll dive into the nitty-gritty of mushrooms and their compatibility with a ketogenic diet.

We’ll provide a detailed breakdown of the carb content in mushrooms and discuss how you can incorporate this versatile food into your keto meal plan.

Beyond just the carb content, we'll also explore the myriad of nutritional benefits mushrooms offer.

So, let's embark on this deep dive into the world of mushrooms and their place in a keto-friendly diet.


  • Yes, mushrooms are keto-friendly due to their low net carb content.
  • They are packed with essential vitamins and minerals that support overall health.
  • Mushrooms can be creatively incorporated into a variety of keto dishes.

Are Mushrooms Keto-Friendly?

Yes, mushrooms are keto-friendly. This verdict is based on the nutritional profile of mushrooms, which contain 3.13g of net carbs per 100g.

Mushrooms' low carbohydrate content makes them a suitable addition to a ketogenic diet. Per 100g serving, a quantity usually consumed in a single meal, mushrooms contain 3.13g of net carbs. This is calculated by subtracting the total dietary fiber content (1.0g) from the total carbohydrate content by difference (4.13g). This modest net carb content makes mushrooms a beneficial choice for those adhering to a low-carb, high-fat diet such as keto.

Can You Have Mushrooms on a Strict Keto Diet?

Absolutely, mushrooms can fit into even a strict ketogenic diet. A strict keto diet involves limiting your carb intake to less than 20g per day, and with mushrooms containing 3.13g of net carbs per 100g, they can easily be accommodated.

Some individuals also follow a more lenient version of the keto diet or a low-carb diet, where they limit their carb intake to 30-50g of net carbs per day. This offers even more flexibility to include nutrient-rich foods like mushrooms in their diet without disrupting their state of ketosis.

Carbs In Mushrooms

Mushrooms contain 3.13g of net carbs per 100g. This value is considered low for a food item, fitting well within the guidelines of a ketogenic diet that emphasizes low-carb consumption.

Mushrooms Nutrition Facts

In a 100g portion, mushrooms are a nutritional powerhouse. They're packed with both macro and micronutrients. The macronutrients include protein (3.1g), dietary fiber (1g), and carbohydrates (3.3g). Mushrooms are a low calorie food, with just 22 calories in a 100g serving.

Turning to micronutrients, mushrooms are notably high in B Vitamins. They contain B2 (Riboflavin), B3 (Niacin), and B5 (Pantothenic Acid), which play vital roles in energy production and cell health. You'll also find minerals such as Potassium, Phosphorus, and a small amount of Magnesium, Zinc, and Selenium.

Perhaps one of the most unique aspects of mushrooms is their Vitamin D content, especially when exposed to sunlight. This makes them a rare non-animal source of this essential vitamin. Mushrooms also contain powerful antioxidants like Ergothioneine and Glutathione, which can help protect the body's cells.

Nutrient NameAmount and Unit per 100g
Net Carbs 3.13g
Carbohydrate, by difference 4.13g
Fiber, total dietary 1.0g
Total fats 0.35g
Protein 2.9g
Sodium, Na 6.0mg
Potassium, K 371.0mg
Magnesium, Mg 10.0mg
Calcium, Ca 5.0mg
Vitamin B-6 0.08mg
Vitamin B-12 0.04ug
Vitamin C, total ascorbic acid 2.1mg
Vitamin E (alpha-tocopherol) 0.01mg
Copper, Cu 0.36mg
Iron, Fe 0.23mg
Phosphorus, P 93.0mg
Selenium, Se 19.0ug
Zinc, Zn 0.5mg
Thiamin 0.05mg
Riboflavin 0.45mg
Niacin 3.91mg
Folate, total 35.0ug
Choline, total 17.3mg
Calories 31.0kcal
Water 91.79g
Fatty acids, total saturated 0.05g
Fatty acids, total polyunsaturated 0.16g
Nutritional data is sourced from the US Department of Agriculture's FoodData Central system. Please see Cast Iron Keto's editorial and research standards for more information.

Health Implications of Mushrooms on a Keto Diet

Mushrooms offer a variety of nutritional benefits that align well with a ketogenic diet. They are a rich source of many essential vitamins and minerals, including B-vitamins such as riboflavin, niacin, and vitamin B-6, as well as important minerals like potassium, phosphorus, and selenium. All these nutrients contribute to overall health, supporting various bodily functions.

Incorporating Mushrooms into Your Keto Meal Plan

  1. Mushrooms can be incorporated into a keto diet in a multitude of ways. They can be used as a vegetable side, sautéed in healthy fats like olive oil or butter, or stuffed with cheese and baked for a satisfying snack.
  2. There are numerous keto-friendly recipes that feature mushrooms. Consider classic dishes like cream of mushroom soup, mushroom omelets, or a "pasta" dish using zucchini noodles topped with a hearty mushroom and garlic sauce.
  3. While mushrooms are low in carbs, remember the importance of portion control. Keeping track of the carbs in each meal is crucial to staying within your daily limit and maintaining ketosis.

Keto-Compatible Alternatives for Mushrooms

  1. Bell peppers: Bell peppers are also a low-carb, keto-friendly alternative to mushrooms. They can be incorporated into dishes in much the same way as mushrooms, such as in salads, stuffed with cheese and meat, or sautéed as a side dish. While they have slightly more carbs than mushrooms, with 4.64g of net carbs per 100g, they are still a great option for a ketogenic diet.
  2. Zucchini: Zucchini is another suitable alternative to mushrooms. It has 2.11g of net carbs per 100g, even lower than mushrooms. Zucchini can be spiralized into noodles for a keto-friendly "pasta" dish or sliced and roasted as a side.
  3. Cauliflower: Cauliflower, with 2.97g of net carbs per 100g, provides a similar low-carb profile to mushrooms. It is a versatile vegetable that can be used in a variety of dishes, such as cauliflower rice, mashed cauliflower, or roasted as a side dish, much like mushrooms.

Concluding Thoughts on Mushrooms and Keto

Mushrooms are a wonderful addition to a ketogenic diet due to their low net carb content, fitting comfortably within even the strictest daily carb limits. Their nutritional profile is impressive, offering a variety of essential vitamins and minerals that support overall health.

Incorporating mushrooms into your meal plan can be as simple as sautéing them as a side dish or as adventurous as using them as a main ingredient in keto-friendly recipes. Keep in mind the importance of portion control and carb tracking, to ensure you stay within your daily limit.

In addition to their health benefits, mushrooms can also add a unique flavor and texture to your dishes, enhancing your culinary experience on a keto diet. As a new idea, consider using large Portobello mushrooms as a substitute for burger buns for a fun, low-carb twist on a classic meal.

Cast Iron Keto's Editorial and Research Standards

Certain rare or exotic food items may not have nutritional profiles in the FoodData Central database. If an exact match is not found in the FoodData Central database, then, the Cast Iron Keto team utilizes a three-prong approach to provide readers with the closest relevant nutritional data, where possible.

First, in the event that nutritional profiles for a rare or exotic food item is not available in the FoodData Central database, we investigate alternative names for that particular food item and use that data, when possible. Second, in cases where no alternate names exist, Cast Iron Keto will use nutritional data for a close relative or similar food item. Finally, if no close relatives or similar items exist, we refrain from publishing nutrient data tables.

When making dietary or health decisions based on FoodData Central's data, we suggest readers consult with a nutritionist or other health experts, particularly if the food in question has a significant role in your diet or if you are using the food item to treat any health disorder(s).

Furthermore, it is important to note that even if a close relative or similar item is used to approximate the nutritional data, different food items can have varying levels of nutrients due to factors such as soil quality, farming practices, and regional differences.


The information on this website is only intended to be general summary information for public use, designed for educational purposes only and is not engaged in rendering medical advice or professional services. This information does not replace written law or regulations, nor does it replace professional medical advice, diagnosis, or treatment. If you have questions about a medical condition or are seeking to evaluate the health merits of certain food items for the treatment of any medical condition, you should seek the advice of a doctor or other qualified health professionals.

The views expressed at, or through, Cast Iron Keto are for informational purposes only. Cast Iron Keto cannot guarantee the validity of the information found here. While we use reasonable efforts to include accurate and up-to-date information, we make no warranties as to the accuracy of the content and assume no liability or responsibility for any errors or omissions in the content. All liability with respect to actions taken or not taken based on the contents of this website are hereby expressly disclaimed. The content on this posting is provided "as is;" no representations are made that the content is error-free.

Frequently Asked Questions

Yes, all types of mushrooms are generally low in carbs and can fit into a ketogenic meal plan, but always check specific nutritional information as some varieties may have slightly higher carb counts.

While mushrooms are low in carbs, it's always important to monitor portion sizes. Consuming large amounts may contribute to exceeding your daily carb intake limit.