What is the most likely explanation for the observation that a person may experience "upset digestion" upon changing the diet?
What will be an ideal response?
The pancreas does know what its owner has been eating, and it secretes enzyme mixtures tailored to handle the food mixtures that have been arriving recently (over the past several days). Enzyme activity changes proportionately in response to the amounts of carbohydrate, fat, and protein in the diet. If a person has been eating mostly carbohydrates, the pancreas makes and secretes mostly carbohydrates; if the person's diet has been high in fat, the pancreas produces more lipases; and so forth. Hormones from the GI tract, secreted in response to meals, keep the pancreas informed as to its digestive tasks. The day or two lag between the time a person's diet changes dramatically and the time digestion of the new diet becomes efficient explains why dietary changes can "upset digestion" and should be made gradually.
You might also like to view...
Why do fats yield more energy per gram than proteins or carbohydrates?
What will be an ideal response?
How do the pancreas and small intestine function together in the process of digestion?
A. The pancreas produces hydrochloric acid (HCl) and releases it into the small intestine. B. The pancreas stores inactive digestive enzymes, and they are activated in the small intestine. C. The pancreas produces bile, which travels to the small intestine for fat emulsification. D. The pancreas produces insulin, which helps break apart carbohydrates in the small intestine.
When it comes to weight loss, reduction of overall energy intake is more important than the macronutrient composition of the diet.
a. true b. false
Why does the color of meat vary among animals and individual muscles? What is a meat pigment? Explain the effect of oxygen and heat on the color of red meat. How do nitrites affect color? Why is this knowledge important to us in the food business?
What will be an ideal response?