Skip to main content

Are tomatoes keto? Carb content and other benefits

Discover whether this food can be part of a keto diet

Colorful heirloom tomatoes on wooden board
Vince Lee / Unsplash

As you explore a ketogenic diet and the foods you can eat and what adjustments you need to make as you start, you’re probably wondering about the everyday staples in your meals and whether they can keep their place in your diet. There’s no doubt that one of these familiar foods you want to know more about is the tomato.

Tomatoes are ever-present piece in many meals, whether as a garnish, a base for sauce and dips, or in salads, so you need to know are tomatoes keto and how you should implement them into this new diet. The answer regarding this healthy hallmark and its implications on your health just might be the answer you’re looking for.

Recommended Videos

What is the ketogenic diet?

Healthy low carbs products. Ketogenic diet concept. Top view
Yulia Furman / Adobe Stock

The ketogenic diet is an eating plan designed so your body uses stored fat for energy rather than carbohydrates. You’ll achieve this by incorporating more healthy fats into your diet, like olive oil and fatty fish, and balancing this with the right amount of protein while limiting carb intake to 50 grams or less.

What makes a food keto-friendly?

Keto diet
Jenna Hamra / Pexels

You’ll know you’re eating keto-friendly foods if they are low in sugar and carbs. Your meal prep is likely to consist of more natural food sources, like nuts and seeds, as well as cocoa butter or almond flour. Note that you can still enjoy sweet treats like smoothies but with more keto-friendly ingredients, like coconut milk, vanilla extract, and nuts. You can keep salad dressing a keto-friendly option by making your own with lemon juice, herbs, and vinegar to bypass the sugars that are added to the average store-bought salad dressing.

Are tomatoes keto?

Colorful tomatoes on vine
Dan Gold / Unsplash

Luckily, tomatoes are a keto-friendly food and suitable for a ketogenic diet, as fiber and carbs only make up 5% of the tomato. In addition to the low carbohydrate content, another benefit of the tomato is that it is a low-calorie food.

Nutritional information of tomatoes

Tomatoes
LoggaWiggler / Pixabay

Turn your attention to tomatoes’ nutritional profile, and you’ll find that they are a low-calorie food that possesses macronutrients and minerals that will benefit your health.

1 cup of chopped tomatoes contains the following nutrients:

  • Calories: 32.4
  • Protein: 1.58 grams
  • Fat: 0.36 grams
  • Carbohydrates: 7 grams
  • Fiber: 2.16 grams
  • Sugar: 4.73 grams

What nutrients are tomatoes rich in?

Tomatoes on vine in a bowl
Rodion Kutsaev / Unsplash

Tomatoes have a rich nutritive makeup that benefits your body and total wellness. The vitamin C and vitamin A content drive the antioxidant abilities, along with flavonoids that combat infection and protect against diseases like heart disease. You’ll also find that tomatoes are rich in magnesium and calcium, as well as potassium, which help with electrolyte balance and maintaining hormone balance and sleep patterns.

Benefits of regularly including tomatoes in your diet

Caprese salad olives tomato basil cheese
Grooveland Designs / Unsplash

Upgraded heart health

Keep tomatoes handy during your meal prep, as this is a sure way to promote heart health. As previously mentioned, tomatoes possess antioxidative characteristics. Selenium is found in tomatoes, as well as lycopene, a carotenoid that works to stop oxidative damage. These components can protect your cells and your heart from the free radical damage that encourages coronary artery disease and other heart diseases.

Digestive support

Eating tomatoes may also benefit your digestive health. Just as lycopene protects against cell damage, it also works to alleviate inflammation, which is beneficial for your GI tract. The many polyphenols, like flavonoids, for example, that are found in this red beauty and have antioxidative abilities also promote good bacteria in the gut, and this balance keeps your system running smoothly.

Improved sleep

The tomato is a vegetable-like fruit that is a high-quality source of tryptophan, which has a positive impact on sleep. This essential amino acid must be obtained via diet and plays a role in sleep, mood, and behavioral patterns. Keep tomatoes and other tryptophan sources in your diet, and your production of serotonin and melatonin will improve, ultimately benefiting your sleep.

Frequently asked questions

Caprese skewers
Silvo / Pixabay

How much tomato can I eat on keto?

As previously mentioned, carbs only make up about 5% of a tomato, so this is a lower-carb option that you can include in your keto diet with creativity. Try homemade tomato sauces if you can, and have tomato slices on toast with avocado and pepper as a snack.

What vegetables are not keto?

Starchy vegetables are not keto. This means white potatoes, sweet potatoes, and beets aren’t permitted. Corn and peas are other starches, like parsnips and carrots, that have a greater carbohydrate content that makes them less friendly to the ketogenic diet.

Instead, turn your attention to the more keto-friendly veggies like Brussels sprouts, celery, and cauliflower. Most of your leafy greens and cruciferous vegetables are allowed, along with some other colorful goodies like bell peppers and eggplant.

Why are cherry tomatoes not keto?

Cherry tomatoes are not considered a keto-friendly food because of their nutritional composition compared to other tomato varieties. Cherry tomatoes possess more carbs and have greater sugar content than some other tomato variants, like the grape tomato. If you were to have cherry tomatoes in your keto diet, it would take great attention to detail and accurate carb counting to be certain the cherry tomato fits within your total carb count.

This would also mean considering the way cherry tomatoes have been processed for preservation. To have a longer shelf life, the already sweet cherry tomato may undergo processing that results in greater sugar content. This would need to be avoided on the keto diet, as well as if you need to adhere to a low-carb diet or a more blood glucose-friendly meal plan.

Christine VanDoren
Christine is a certified personal trainer and nutritionist with an undergraduate degree from Missouri State University. Her…
11 benefits of squats that will improve your overall fitness
Here are the reasons to do more squats, plus expert tips
Man squatting down doing jump squats at home workout

Squats have many benefits, and they arguably involve one of the most important foundational movement patterns when it comes to strength training. Nearly every total-body or lower-body resistance training workout will include a variation of a squat due to its effectiveness.

I have two little dogs, so I often practice my squats to dip down low to pet them. My reward for squatting to the floor is seeing their cute, smiling, furry faces. I usually include squats in my workout routine because they enhance my functional fitness and provide various benefits. Plus, you can also make it more challenging by adding weights and switching up your routine with one of the numerous variations.

Read more
11 delicious low-glycemic foods to improve your overall health
Vegetables, eggs, and more
Vegetables on cutting board

Do you wish you could maintain your energy levels and consume a lot of nutrient-dense foods without accumulating too much sugar? As a trainer and nutritionist, this is a common goal that many clients share with me. Luckily, certain diet plans can help you achieve this easily, with one of them being the low-glycemic diet.

Low glycemic foods can aid weight loss, help manage diabetes, reduce overall cholesterol levels, improve athletic performance, and reduce blood pressure. So, if you want to learn more about the low-glycemic diet, keep reading for information on the glycemic index, the benefits of low-glycemic foods, and more!
What is the glycemic index?

Read more
What is clean eating: How it influences weight loss and bulking
Should eating clean be your new goal?
Healthy low carbs products. Ketogenic diet concept. Top view

As a nutritionist, many new clients come to me sharing the diet trends they have tried that ultimately weren’t sustainable. Clean eating is one of the newest diet trends that everyone is currently enthusiastic about, especially in the U.S., because they keep hearing that it's healthy and natural. However, there are no regulations around "clean eating," so many people have their own thoughts on what it actually means.

According to a recent study, "Definitions for the culturally trendy 'clean' eating phenomenon vary; whereas some characterize it as natural and healthy, others adopt more restrictive, moralizing, and affectively laden definitions that may reflect disordered eating."

Read more