They therefore have very little carbohydrate. You can perform similar experiments yourself just use your blood glucose meter. If they contain carbohydrate, they must at least be counted in your meal plan and will probably render little or no improvement in your lipid profile. Fiber, like carbohydrate, is not essential for a healthy life. Just look at the Eskimos and other hunting populations that survive almost exclusively on protein and fat, and don't develop cardiac or circulatory diseases.
Actual results are the yardstick for an appropriate diet.
We have the tools for self-monitoring of blood sugar and blood pressure. Under your doctor's supervision, try our diet recommendations for at least two months. Then try any other diet plan for two months and see what happens. The differences may not be in the direction that the popular literature would predict.