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Are Tomatoes Really Keto?

keto, diet, nutritious

Tomatoes are a staple in many diets around the world, but for those following the ketogenic diet, there may be some confusion about whether tomatoes are keto-friendly. The ketogenic diet is a low-carb, high-fat diet that has gained popularity for its potential health benefits, including weight loss and improved blood sugar control. In this article, we will explore the nutritional profile of tomatoes, their impact on ketosis, and whether they can be included in a keto diet.

Tomatoes: A Nutritional Powerhouse

Tomatoes are not only delicious but also packed with essential nutrients. They are a rich source of vitamins A, C, and K, as well as potassium and folate. Additionally, tomatoes are known for their high content of lycopene, a powerful antioxidant that has been linked to various health benefits, including reduced risk of heart disease and certain types of cancer.

The Carbohydrate Content of Tomatoes

One of the main concerns for those following a ketogenic diet is the carbohydrate content of foods. The goal of the keto diet is to enter a state of ketosis, where the body burns fat for fuel instead of carbohydrates. To achieve this, individuals typically limit their carbohydrate intake to around 20-50 grams per day.

When it comes to tomatoes, they do contain carbohydrates, but the amount can vary depending on the type and ripeness. On average, a medium-sized tomato contains about 4-5 grams of net carbs, which is the total carbohydrate content minus the fiber content. Considering the low carbohydrate content of tomatoes, they can be included in a keto diet in moderation.

Tomatoes and Ketosis

While tomatoes do contain carbohydrates, their impact on ketosis is minimal due to their relatively low carbohydrate content. Including tomatoes in your keto diet is unlikely to kick you out of ketosis, especially if you consume them in moderation and account for their carbohydrate content in your daily macronutrient intake.

Incorporating Tomatoes into a Keto Diet

If you’re following a ketogenic diet and want to include tomatoes, here are some tips to consider:

  • Choose lower-carb tomato varieties: Some tomato varieties, such as cherry tomatoes, tend to have a slightly lower carbohydrate content compared to larger varieties like beefsteak tomatoes. Opting for these lower-carb varieties can help you keep your carbohydrate intake in check.
  • Control portion sizes: While tomatoes are relatively low in carbs, it’s still important to control your portion sizes to ensure you stay within your daily carbohydrate limit. Tracking your macronutrient intake using a food diary or a mobile app can be helpful in this regard.
  • Pair tomatoes with healthy fats: Since the ketogenic diet is high in fat, pairing tomatoes with healthy fats can help enhance nutrient absorption and keep you feeling satisfied. Consider adding olive oil or avocado to your tomato-based dishes.


Tomatoes can be a part of a ketogenic diet when consumed in moderation. Their low carbohydrate content and numerous health benefits make them a valuable addition to a well-rounded keto meal plan. As with any diet, it’s important to listen to your body and adjust your food choices based on your individual needs and goals. If you’re unsure about whether tomatoes fit into your specific keto plan, consulting with a registered dietitian or healthcare professional can provide personalized guidance.