You body is having a hard time being undernourished, it's going into starvation mode and bad breath is one of the many ways your body tells you it's not happy. For example, most of our sugar cravings are the result of skipped meals or just plain hunger, not any metabolic defect. We crave sugar because our body needs energy right away, and sugar delivers fast, but sometimes with consequences. At the heart of Dr. Atkins' plan is the claim that the American diet is based too heavily on carbohydrates and sugars. Carbohydrates include simple sugars such as candy, chocolate and pastries as well as white bread, some cereals and white rice.
Complex carbohydrates are food like beans, brown rice, fruits and vegetables.
The Atkins diet so severely restricts carbohydrate intake that your body goes into a state of ketosis. Ketosis is the body's response to starvation due to lack of carbohydrate. It can cause fatigue, constipation, nausea and vomiting. Potential long-term side effects include heart disease, osteoporosis and kidney disease. Osteoporosis is a condition that makes your bones weak and brittle causing them to break easily.