Berries
Blackberries, strawberries, and raspberries are low in carbohydrates than other fruits and contain plenty of antioxidants and fiber.
These fruits taste naturally sweet, and you can use them as a sugar substitute in small snacks in between meals.
Here is an overview of the carbohydrate content for different berries (100 grams per serving) (10, 11, 12, 13).
