Which Foods Prevent Ketosis?

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Well, that depends on what you’re eating. Mostly all grains and sugars will set you back and prevent ketosis. There are some foods that can be eaten during keto because they have such low carb content, but others cannot. For example:


Grains are a no-no on the keto diet. There are several reasons for this, but the biggest one is that grains contain too many carbohydrates and not enough protein or fat.

For example:

  • 1 slice bread has 7 grams of carbs (1) and 6 grams of fiber (2). If you eat 2 slices of bread in one sitting, that’s 14 grams of carbs right there! You can see why I don’t recommend eating grains at all when trying to lose weight or reduce inflammation.  If you’re thinking about eating whole grain breads or pastas because they’re healthier than white flour version, think again. Even whole wheat contains 4-6g per slice. So while it might not seem like much now but those extra few grams add up quickly over time! With everything else we have going on in our lives today (working 9+ hour days), it’s easy for us to overlook how important portion control really is when it comes down to losing weight quickly

Grains include wheat, oats, corn (maize), rice and barley/rye. They’re also rich in fiber which makes them feel soft on your stomach when eaten raw or cooked (like pasta).


Sugar is a carb, which means it’s not actually a nutrient. Carbohydrates are broken down into glucose by your body and used for energy, but sugar does not provide this benefit. Instead, it can lead to weight gain and increase your risk for heart disease and diabetes.

Sugar also causes cavities because it hardens the teeth when you eat too much of it over time! That’s why most dental professionals recommend avoiding sugary foods altogether. Even if they’re healthy options like fruit or vegetables because they’ll just end up making everything else taste bad anyway!

Most Fruits

Fruit is high in sugar and fructose, which can lead to elevated levels of blood sugar. The body converts these sugars into glucose and glycogen, both of which are used by the body for energy. The liver stores this glycogen as fat cells when there isn’t enough energy available from other sources (such as fats). Fruits are the most common food to be restricted on a ketogenic diet. These foods are high in sugar and are definitely not allowed. But there are some fruits that can be eaten as long as they fit into your macros, like berries and cherries. If you want to eat fruit with your meals but still keep things low carb/high fat / moderate protein, try eating half of your daily portion at lunch time instead of dinner time.

Starchy Vegetables

Starches (potatoes, sweet potatoes, carrots) are a no-go on the keto diet. These foods are high in carbs and will kick you out of ketosis if you eat them regularly. Instead of going for the starchy stuff, opt for veggies or even fruit as a snack instead!

Potatoes are one of the worst offenders when it comes to carbs: they have anywhere from 12-21 grams per serving—and that’s not even counting all their added sugars! Sweet potatoes may be slightly better but still contain about 20 grams per serving. Carrots are an acceptable option (about 7g), but keep in mind that these veggies aren’t very filling so don’t make them your only meal unless you’re really hungry—you’ll be left starving without any energy left over after eating them!

  • Potatoes
  • Cassava (also known as manioc) and plantains are also very low in carbohydrates, which means they’re good sources of fiber as well. However, it’s important to note that these foods are also high in sugar—which is why it’s important for you to limit your intake of them if you want to avoid ketosis.

High-Fat Dairy Products

High-fat dairy products, such as cheese and cream, are excellent at preventing ketosis. The high fat content of these foods prevents your body from entering ketosis because you’ll be able to use up all of the stored fat for energy. A serving of cheese has about 20 grams of protein (about half an ounce) as well as a lot of calories—more than enough to prevent ketosis in most people who eat it regularly.

Cheese also contains many different vitamins and minerals like calcium and potassium that support good health when eaten with other foods like vegetables or grains.

Beans, Peas and Lentils

They have the tendency to be high in carbs. You cannot eat enough of these foods to prevent your body from going into ketosis.

The reason why beans, peas and lentils are not recommended for people who want to lose weight is because they have a high amount of carbohydrates. If you’re trying to lose weight or keep the pounds off once you reach your goal weight then eating too much food like this will make it difficult to achieve those goals because all that extra energy stored as fat will be released into the bloodstream causing insulin resistance which leads to inflammation and increased risk for disease development.

Beans, peas and lentils also don’t provide any nutritional benefits either so even though they might taste good when cooked they could still contribute towards obesity due to their high caloric content per serving size (about 100 calories). If we consider that 1 cup serving size equals approximately 250 grams (cooked), then just by counting total calories consumed over time during meals containing beans/lentils alone would amount to over one thousand calories per day!


Alcohol is a great way to kick your body out of ketosis, and it can also cause you to gain weight. Alcohol contains calories and will dehydrate you while in the process. If you want to prevent this from happening, enjoy your beverage slowly over time by alternating between drinking water and sipping on it throughout the night.

If you want to avoid ketosis, don’t eat these foods.

  • High-carbohydrate foods include:
  • breads, rice and pasta
  • fruits like apples, oranges and bananas
  • starchy vegetables such as potatoes and sweet potatoes (but not in large amounts) * High-sugar foods include: -fruit juice -sweets * High-fat foods include: -nuts and seeds (limit these to no more than 10g per day)


The ketogenic diet is a diet with a very low carbohydrate intake that mimics the effects of fasting for insulin levels. With this approach, the body fat gets switched from stored carbohydrate to fatty acids instead. This helps many people lose weight in the short term because they can eat fatty foods and not feel hungry. The downside is that many people will enter ketosis, which can create some side effects like feeling tired and having cravings for sweet foods. If you want to avoid these problems, then try out one of these low carb vegetables instead! Ketosis is a great way to help your body lose weight and control your blood sugar levels. However, it’s not always easy to stay on track with this plan because of all the food options available. There are some foods that you can eat during a ketogenic diet, but there are also some that you should avoid at all costs!


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Alison Housten

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