How Fiber Impacts Blood Sugar How Fiber Impacts Blood Sugar Though fiber is actually a carbohydrate itself — one of the three main types in food, along with starches and sugars — it doesn’t cause spikes in your blood sugar the way the other two can.e60dc2a1-f33c-4a05-9b50-8e3e8e59762956679e36-18c0-4890-b94f-3ab84b2577fee60dc2a1-f33c-4a05-9b50-8e3e8e5976295d68e746-49f4-4ee0-8995-cdf15ebc22cb That’s because both soluble and insoluble fiber aren’t absorbed by the body in the…