You can eat a lot of vegetables even if they are only 5 percent of you caloric intake. You can also get all the nutrition that comes from fruit by eating vegetables.

The side effects are due to your body going through withdrawal. Sugar, especially processed sugar, is highly addictive. For me the side effects lasted about two weeks. For others they last a few days. Some people have no side effects at all. The point is don't mistake symptoms of withdrawal for symptoms of ketosis.

Getting the keto rash is rare. I have heard it goes away eventually, but if you do get it then it is probably best to try something else.