The short answer to this is 'No'. 1 cup (180 grams) of cooked lentils contains 36 grams of carbs. After subtracting 14 grams of fiber, it still has 22 grams of net carbs. Similarly, 1 cup (160–200 grams) of cooked beans and legumes contains carbs ranging from 44- 49 grams. After deducting fiber, ranging between 9-16 grams, they still average around 30 grams of net carbs per serving. Depending on personal tolerance and dietary restrictions, you may be able to include small amounts on a low-carb diet. (check with your physician)