

These foods are made of sugars, either simple or complex (carbs). If this is your main diet, you're having dessert for every meal!
White food generally refers to foods that are white in color and have been processed and refined, like flour, rice, pasta, bread, crackers, cereal, and simple sugars like table sugar, fructose, and high-fructose corn syrup.
Sucrose is the scientific name for table sugar (composed of glucose and fructose).
Glucose is the building block of carbohydrates.
Fructose is the sugar found in fruit and honey.
Summary: Glucose and fructose are absorbed directly into your bloodstream, while sucrose must be broken down first. Glucose is used for energy or stored as glycogen. Fructose is converted to glucose or stored as fat.
Ketosis is a normal process that happens when your body doesn't have enough carbs to burn for energy. Instead, it burns fat and makes substances called ketones, which it can use for fuel.
Unlike muscle, your brain can't use fat as a fuel source. However, the brain can use ketones. Your liver produces ketones from fatty acids when glucose and insulin levels are low.
Current thinking suggests carbs are the master fuel, but ketones may actually be the master fuel with carbs as the body's backup. Carbs and sugars are absorbed directly, so in times of fat famine when the body is starving, carbs are absorbed quickly to prevent death.
