What Can't You Eat on Keto - Prohibited Foods Explained (2024)

The ketogenic diet is on hearing for its ability to facilitate weight loss and enhance overall well-being. The main objective of this diet is to transition the body's metabolism into a state that is called ketosis, where fat becomes the primary source of energy instead of carbohydrates.

In case you’re a newcomer in keto, you should be mindful of the foods that are strictly forbidden on this meal plan in order to successfully achieve and sustain ketosis. This article reveals ten foods that are not recommended on the keto diet and discusses the reasons why they should be avoided.

Understanding the Keto Diet

Before we explore restricted foods, let's briefly grasp the principles of the keto diet. The main objective of this diet, distinguished by high fat, modest protein as well as low carbohydrate intake, is to significantly reduce carb consumption. By limiting carb intake to approximately 20-50 grams per day, the body depletes its glycogen stores and shifts to breaking down fats into ketones, an alternative source of fuel. Consequently, the body enters a state of ketosis, which forms the basis of the ketogenic diet's effectiveness. This can be done by achieving a proper meal plan containing the right goods. At Ideal Nutrition, you can find flavorful keto meals boasting a diverse menu and ensuring a satisfying culinary experience while staying true to your ketogenic goals.

And here are the common foods that should be avoided.

10 Foods You Can’t Eat on the Keto Diet & Their Substitutes

1. Grains and Starches

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One of the initial food categories to steer clear of on the keto diet is grains and starchy foods. Examples include wheat, rice, corn, and oats, which are rich in carbohydrates. These goods can have a notable impact on blood sugar levels and impede the body's ability to enter ketosis. By eliminating these high-carb staples from your diet, you enable your body to efficiently burn fat for energy instead of relying on glucose derived from carbohydrates.

Substitutes for Grains and Starches

  • Cauliflower rice. Substitute traditional rice with cauliflower rice, a nutritious alternative that is low in carbs. It serves as a versatile base for stir-fries, curries, and even keto-friendly sushi rolls.
  • Zucchini noodles (Zoodles). Replace traditional pasta with zucchini noodles to savor your beloved pasta dishes while avoiding excessive carbs. Zoodles can be lightly cooked or enjoyed raw in salads.

2. Sugary Foods and Sweets

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Sweet treats and sugary foods are a definite "no" when following a keto diet. Consuming candies, pastries, and sugary drinks leads to a quick rise in insulin levels. Elevated insulin levels hinder fat burning and encourage fat storage, making it hard to achieve and maintain ketosis. Avoiding these sugary temptations helps stabilize blood sugar levels and enhances your body's ability to burn fat.

Substitutes for Sugary Foods and Sweets

  • Stevia or erythritol. Incorporate natural sweeteners such as stevia or erythritol into your keto baking and cooking. These sweeteners have minimal effect on blood sugar levels and can satisfy your cravings for sweetness without disrupting your ketosis.
  • Dark chocolate. Pick dark chocolate with at least of 70% cocoa content and low sugar. It can be a delightful indulgence in moderation and provides numerous health advantages.

3. High-Carb Fruits

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While fruits provide essential vitamins and antioxidants, some fruits have higher carbohydrate content. Bananas, grapes, and mangoes, for example, contain significant amounts of sugar and are not recommended for those following a keto diet.

Substitutes for High-Carb Fruits

  • Berries. Berries like strawberries, blueberries, raspberries, and blackberries are rich in fiber, antioxidants, and have a low carb content. Indulge in them moderately for a delightful and nutrient-packed treat.
  • Avocado. Avocado is a fruit that is compatible with the keto diet, as it contains beneficial fats and is low in carbs. It can be a flexible ingredient in salads, smoothies, and desserts.

4. Starchy Vegetables

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Vegetables are typically regarded as nutritious, although certain types contain higher levels of starch and carbohydrates. On the keto diet, you should restrict the consumption of starchy vegetables such as potatoes, yams, and corn.

Substitutes for Starchy Vegetables

  • Leafy greens. Spinach, kale, arugula, and other leafy greens serve as top-notch substitutes for starchy vegetables. These nutrient-rich options are low in carbohydrates and offer a myriad of essential vitamins and minerals.
  • Broccoli and cauliflower. These vegetables are rich in nutrients and can be incorporated into a range of keto-friendly recipes like casseroles and soups, making them a great addition to your low-carb diet.

5. Legumes and Beans

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Beans and legumes receive accolades for their protein and fiber content, yet they also contain a considerable amount of carbohydrates. Lentils, chickpeas, and black beans, among others, can potentially interrupt ketosis and cause fluctuations in blood sugar levels. For a strict keto diet, completely abstain from consuming legumes and beans.

Substitutes for Legumes and Beans

  • Nuts and seeds. Almonds, walnuts, and chia seeds are excellent sources of healthy fats and protein. They can be enjoyed as snacks or used as toppings in ketogenic recipes.
  • Coconut flour. To reduce the carbohydrate content of your beloved recipes, consider using coconut flour as a substitute for conventional flours when baking. This change can help keep your creations healthier and more suitable for your dietary needs.

6. Processed Foods with Hidden Carbs

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Processed foods are well-known for their concealed sugars and carbs, which can impede your keto progress. Foods like chips, pre-packaged snacks, and some convenience meals may appear low in carbs, but they frequently harbor covert sugar and starch sources. Be vigilant in reading food labels and opt for whole, unprocessed foods to stay on course with your keto adventure.

Substitutes for Processed Foods

  • Homemade snacks. Create your own low-carb snacks, such as kale chips, cheese crisps, or nut blends. By doing so, you can have full control over the ingredients and ensure they align with your daily carb limit.

7. Alcohol and co*cktails

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Alcohol consumption presents a distinct challenge when following the keto diet. While certain alcoholic beverages contain minimal carbohydrates, the body prioritizes metabolizing alcohol over fats, which can delay or halt ketosis. co*cktails that are mixed with sugary syrups or sodas can result in a significant intake of carbs. Exercise moderation if you decide to consume alcohol while on a keto diet, and pick low-carb options.

Substitutes for Alcohol and co*cktails

  • Spirits with low-carb mixers. Select spirits such as vodka, gin, or tequila and combine them with sugar-free alternatives like soda water, sparkling water, or diet tonic.

8. High-Carb Sauces and Condiments

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Many seasonings contain sugars and starches that can quickly add up and disrupt ketosis. Examples of condiments to avoid include ketchup, BBQ sauce, and sweet dressings.

Substitutes for High-Carb Sauces and Condiments

  • Olive oil. Use olive oil as a foundation for dressings and sauces. It serves as a fantastic provider of nutritious fats while imparting a delightful taste to your keto dishes.
  • Mustard. Mustard is a condiment with low carbohydrate content, which adds a tangy flavor to sandwiches and salads in a delightful way.

9. Trans Fats and Hydrogenated Oils

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Partially hydrogenated oils, which commonly contain trans fats, bring negative effects on heart health and can contribute to inflammation. While there is no direct link between trans fats and ketosis, it is better to avoid them in order to promote overall health while following a keto diet. To support your body's optimal functioning, steer clear of margarine and processed foods that contain hydrogenated oils.

Substitutes for Trans Fats and Oils

  • Healthy fats. Choose natural sources of healthy fats like avocados, olive oil, coconut oil, and nuts. These fats promote ketosis and enhance overall wellness.

10. Low-Fat and Diet Products

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While low-fat and diet items are advertised as nutritious choices, they frequently include extra sugars and artificial sweeteners to alter the absence of fat. The consumption of these products might impede your progress on the keto diet by raising your carbohydrate intake.

Substitutes for Low-Fat and Diet Products

  • Full-fat dairy. Opt for full-fat versions of dairy products such as yogurt, cheese, and heavy cream. These choices are lower in carbohydrates and provide greater satisfaction compared to their low-fat alternatives.
  • Grass-fed meat. Savor the goodness of grass-fed meats, rich in beneficial omega-3 fatty acids, and free from any added hormones or antibiotics.

Conclusion

Maintaining a successful keto diet requires a solid understanding of the foods to avoid. By staying away from grains, sugary foods, high-carb fruits, and starchy vegetables, you set yourself up for a smoother transition into ketosis. Additionally, steer clear of processed foods, alcohol, and condiments that may contain hidden carbs. This wise approach helps you stay on track with your keto goals while promoting overall health. Embrace a balanced approach to the keto diet, and soon you'll experience the benefits of increased energy, weight loss, and overall health state.

What Can't You Eat on Keto - Prohibited Foods Explained (2024)

FAQs

What food is not allowed in keto? ›

10 Foods You Can't Eat on the Keto Diet & Their Substitutes
  • Grains and Starches. ...
  • Sugary Foods and Sweets. ...
  • High-Carb Fruits. ...
  • Starchy Vegetables. ...
  • Legumes and Beans. ...
  • Processed Foods with Hidden Carbs. ...
  • Alcohol and co*cktails. ...
  • High-Carb Sauces and Condiments.

What foods do not break ketosis? ›

Foods you can eat on the keto diet include fish and seafood, meat and poultry, non-starchy vegetables like bell peppers, broccoli, and zucchini, avocados, berries, nuts and seeds, eggs, high-fat dairy products, olive oil and other oils, and high-cocoa chocolate.

What is excluded from a ketogenic diet? ›

The keto diet excludes carb-rich foods like grains, beans, fruits and starchy vegetables. 20 percent of calories from protein, such as meat, eggs and cheese. 75 percent of calories from fat, such as oils, unprocessed nuts, butter and avocado.

What foods are surprisingly not keto? ›

It is best if you aim to consume around 12-15g net carbs from vegetables per day, and here are the keto diet foods to avoid:
  • Potatoes.
  • Sweet potatoes.
  • Baked potatoes.
  • Yams.
  • Peas.
  • Corn.
  • Artichoke.
  • Parsnips.

Can you eat a banana on a keto diet? ›

Bananas. Bananas may be great for muscle recovery, reducing bloat, and calming an upset stomach, but they're on the list of foods you can't eat on the keto diet. With 25g of carbs per 100g serving, bananas are too high in carbs.

Can I eat popcorn on keto? ›

Net carbs are calculated by taking the total grams of carbohydrate in a food and subtracting the amount of fiber. In this case, popcorn contains 6 grams of carbs per 1 cup serving and 1.2 grams of fiber, bringing the net carbs per serving to 4.8 grams. Yes friends, popcorn is indeed a keto food.

What are the top 10 keto foods? ›

These are the top 10 keto foods you should include if you're on...
  1. Salmon. Whether wild or farm-raised, salmon is rich in fat, making it an essential ketogenic diet staple. ...
  2. Eggs. This affordable protein and fat source is highly versatile. ...
  3. Cauliflower. ...
  4. Greens. ...
  5. Avocado. ...
  6. Nuts. ...
  7. Olive oil. ...
  8. Zucchini.

Does eggs stop ketosis? ›

Eggs are keto and you can surely eat eggs on keto, as they contain almost zero carbs and fit well with a low-carb diet like the ketogenic diet. Eggs contain essential vitamins, minerals and other micronutrients, including choline and selenium. And the best part is that they are packed with protein.

Can you eat cheese on keto? ›

All types of cheese are allowed on the keto diet, as cheese is relatively low in carbohydrate, which complies with the key principle of the keto diet. The Ketogenic diet or “keto” diet is a low carbohydrate and high fat eating plan.

What medications should not be taken with keto? ›

Medications used for seizures and glaucoma (Carbonic anhydrase inhibitors) interacts with KETOGENIC DIET. Some medications used for seizures and glaucoma can increase the risk of kidney stones. The ketogenic diet might also increase the risk of kidney stones.

What condiments to avoid on keto diet? ›

Condiments to Avoid on Keto

The main condiments that do not fit well into the keto diet regime because of their high sugar content are full-sugar ketchup, maple syrup, jam, tomato paste, and premade sauces.

What foods can you eat unlimited amounts of on keto? ›

What you can eat on a keto diet:
  • Plenty of meats: Chicken, pork, steak, ground beef, lamb, bacon, turkey, ham, and sausage (in limited amounts).
  • Fatty seafood: Salmon, snapper, tuna, halibut, cod, trout, catfish, scallops.
  • Shellfish: Crab, clams, oysters, lobster, mussels.
Nov 1, 2022

Can you eat peanut butter on keto? ›

Peanut butter can definitely be part of a keto diet, but it's best to stick to plain options that are free of extra flavors and sweeteners. Almond butter is a good choice, too, and it's slightly lower in carbs. Additionally, you should be mindful of your portion size if you're trying to lose weight.

What are big mistakes on keto? ›

Eating too much protein and not enough fats

Proteins as well can cause insulin spikes when over-consumed. The only macronutrient that doesn't spike insulin is pure fat. For this reason, you need to be adhering to very specific fat/carb/protein ratios when following a Keto Diet.

What foods to get off keto? ›

Rather than going straight for pasta, doughnuts, and cupcakes, go for plant-based carbs when you first break up with keto. "I would reintroduce whole grains, beans, legumes, fruits, non-starchy vegetables first versus processed foods and sugar-sweetened beverages," says Hughes. Go slow.

Is popcorn keto-friendly? ›

Net carbs are calculated by taking the total grams of carbohydrate in a food and subtracting the amount of fiber. In this case, popcorn contains 6 grams of carbs per 1 cup serving and 1.2 grams of fiber, bringing the net carbs per serving to 4.8 grams. Yes friends, popcorn is indeed a keto food.

What junk food is keto? ›

If you're looking for keto-friendly fast food options, consider ordering bunless burgers or lettuce-wrapped burgers from popular chains like Wendy's, Burger King, or In-N-Out. You can also opt for low-carb burrito bowls at places like Chipotle or even indulge in egg-based breakfasts at restaurants like McDonald's.

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