Which of the following statements is TRUE?
a. The most common macronutrient deficiency among alcoholics is carbohydrates.
b. Chewing gum with artificial sweeteners is the only proven way that artificial sweeteners promote oral health.
c. The muscle uses its glycogen reserve as a way to keep blood-glucose levels within a narrow range between meal times.
d. People with the rare genetic disorder PKU have to avoid products that contain stevia in order to prevent a build-up of phenylalanine.
e. Like saturated fats, trans fats reduce LDL "bad cholesterol," but unlike saturated fats, trans fats raise HDL "good cholesterol."