Nuts are high in fiber and protein, and many are low in carbohydrates. For example, 1 ounce of almonds contains about 6 grams of protein, 5 grams of total carbs and 3 grams of dietary fiber.unflower seeds are high in protein and fiber, but contain few carbs. High-protein, low-carb diets are often effective for weight loss. Dietary fiber can help you feel full, aids in digestion, is helpful for weight management and reduces constipation.