It is important for humans to crave for both salty and sugar foods. Our body needs energy which is provided by carbohydrates so, we crave for sweet foods. craving for salt makes sure to have enough of it in the body as sodium is an essential mineral for our body. The body needs to maintain salinity for the tissues to function properly. Sodium salts also help in stimulating the taste bud receptors to increase flavor.
Head traumas and spinal cord injuries are usually caused by accidents or some illnesses. The long term effect of such injuries may differ from each person and would depend on the cause and severity. Some consequences would include paralysis of the lower part or the upper part of the body that would depend on the location of the injury of the spinal cord. For the head it may be slurred speech,impaired cognition and visual defect.
C.) cholesterol is not a nutrient since it can be produced in your liver and intestine