Why is glucose the preferred source of energy for the body? How do the nutrition guidelines reflect this preference?
The body's cells have enzymes that are optimized for glucose breakdown to produce ATP through cellular respiration. Glucose produces 4 calories/gram versus 9 calories/gram for fat. The body cannot break down fat completely to produce ATP energy without the presence of pyruvate. This pyruvate is produced during glycolysis that is the breakdown of glucose.
The nutrition guidelines recommend that 45-65% of all calories come from carbohydrates as compared to 20-35% of all calories that should come from fat.
You might also like to view...
When used with human beings, elemental diets: a. support life
b. support optimal growth. c. support long-term health. d. enable people to thrive. e. are ideally used over long periods.
Menopause is associated with a(n) _____.
A. decline in muscle mass B. increase in abdominal fat C. accelerated gain of bone mass D. lower risk of cardiovascular disease E. increase in the elasticity of the skin
What is a characteristic of a closed feeding system?
A) ?The formula can hang for a longer period of time. B) ?It is more expensive in the long run. C) ?Aseptic technique is not necessary. D) ?It requires far more nursing time.
George is a 5? 8??, 29-year-old man who weighs almost 350 pounds. To lose weight, he's tried calorie-restricted diets, fad diets, exercise programs, and appetite-suppressing pills without success. George wants to a permanent solution to treat his obesity. George's physician is likely to recommend a(n) ________ as the best way to help George lose a lot of weight and avoid regaining much of it.
A. sleeve gastrectomy B. anterior thyroidectomy C. frontal lobotomy D. visceral lipectomy