A measure of nutrient content relative to total calories a food provides. ?

One measurement of food quality is the amount of nutrients it contains relative to the amount of energy (Calories) it provides. High-quality foods are nutrient dense, meaning they contain lots of the nutrients relative to the amount of Calories they provide.

explanation:

eventually, the disease can cause permanent damage or deterioration of the nerves. some people with ms experience a gradual onset and steady risk factors.