26 Times You Should Say 'No Thanks' to the Keto Diet

3. If You Have Diabetes

Fiber is needed to slow down the digestive process, which has an impact on blood glucose spikes. Fiber is only found in plant sources of food and is limited while on the ketogenic diet. Fiber controls blood sugar levels by limiting the amount of glucose that is dumped into the bloodstream. Because of this, fiber reduces blood sugar spikes and can help control diabetes. Eating a diet that is high in vegetables is the best way to incorporate fiber into one's diet. This would be hard to accomplish on a diet that limits its overall carbohydrate intake to just two to four percent.

4. If You Have Chronic Fatigue Syndrome

A high-fat diet is hard to metabolize. Meat is harder to break down in the digestive system than plants are. Eating a diet that is high in meats and natural fat may be taxing on the digestive system, which can result in an increased risk of chronic fatigue. Eating high-fat meals all the time can make a person tired because they are overloading their digestive system with hard to digest food, and they are not eating enough plant-based sources. Plants such as fruits and vegetables provide natural energy. They also work as natural detoxification agents to eliminate toxins from the body, which is another energy source for the body.