Are Carbohydrates Necessary for Good Health?

In their book, Protein Power, Drs. Michael and Mary Dan Eades write, "The actual amount of carbohydrates required by humans for health is zero."

In other words, there is no such thing as a necessary carbohydrate for good health.

They go on to say that every cell in the human body has the ability to create its own sugar or energy. 

Therefore, carbohydrates, especially in the quantities generally consumed today, serves only to damage the internal environment of the human body.

So what do you think? 

Are carbohydrates necessary for good health?