Carbohydrates consist of complex long-chain and short-chain carbohydrates or sugars. All the cells – the cells in the brain – more than the rest – depend on glucose for energy and to function properly. The body makes glucose by splitting complex sugars and carbohydrates into their basic units – mostly sugar.
This process begins in the mouth when saliva is added to the food. The enzymes in the saliva hydrolyze carbohydrates into simple sugars and the process continues until inhibited by the acid in the stomach – only to begin again in the small intestines after pancreatic juices are added.
Glucose is essential, but provided in pure form could be dangerous. Only the slow release of glucose from foods in conjunction with other nutrients is safe
The level of toxicity of carbohydrates depends on the degree of refinement. Excessive consumption of carbohydrates, such as rice, grains and potatoes is known to cause obesity and to produce a metabolic imbalance and is further associated with an inadequate digestion of fats and protein.