For the rest of us, tomato sauce is an integral part of our diets for good reasons (besides being delicious). People with Type 2 Diabetes are often encouraged to eat tomatoes to lower the risk of cardiovascular disease. Marinara contains high levels of vitamin A, vitamin C, calcium, and lycopene. The herbs in tomato sauce provide important antioxidants with no carb impact. This low carb recipe is sugar free and gluten free.