Are excess calories to enjoy once your required nutrient needs are met.
The six major nutrients found in food and are requried for cellular processes are carbohydrates, proteins, fats, water, vitamins and minerals.
Glucose transporter protein 1, or GLUT1 and SGLT1, present in all human tissues, but especially in RBCs. It is also anchored in the protective sheet of flat cells that line up the blood vessels of the brain.