Tomatoes, similar to carrots, are considered a non-starchy vegetable in meal planning for diabetes. This means that the amount of naturally occurring sugar is minimal in a serving. A non-starchy vegetable serving is ½ cup cooked or 1 cup raw and contains approximately 2 grams of sugar and 4 grams of total carbohydrates (amount of starches and sugars added together).
How does this compare to fruits and starchy vegetables like potatoes, corn, peas, and beans? A serving of a fruit or starchy vegetable, such as a small apple or ½ cup of beans, contains about 2 to 15 grams of sugar and 15 grams of total carbohydrate. In other words, non-starchy vegetables like tomatoes contain less sugar and carbohydrate.
The total amount of carbohydrates in food affects glucose levels in people with diabetes. The bottom line is that tomatoes are not high in total carbohydrates or sugar and are an excellent source of B vitamins like folate, and vitamins A, C, E, and K. Non-starchy vegetables of all shapes, taste, and colors are a valuable part of meal planning for people with and without diabetes
Meeting with a Registered Dietitian or Certified Diabetes Educator can help you get specific recommendations for meal-time amounts of total carbohydrates.