PHYSEDU 203 Lecture Notes - Lecture 6: Dietary Fiber, Glycemic Index, Glycemic Load
18 Oct 2016
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Document Summary
Blood levels of cholesterol are reduced (b) low fiber diet less fiber is present to bind to bile, so less bile is excreted in the feces. More cholesterol is reabsorbed from the remaining bile. Why do we need carbohydrates: energy. When diet does not provide enough carbohydrate, the process of gluconeogenesis converts proteins in blood and tissue into glucose. Red blood cells rely only on glucose for their energy supply. Both carbohydrates and fats supply energy for daily activities. Glucose is especially important for energy during exercise. Sufficient energy intake from carbohydrates prevents production of ketones as an alternate energy source. Excessive ketones can result in high blood acidity and ketoacidosis. Digestion of carbohydrates: most chemical digestion of carbohydrates occurs in the small intestine. Enzyme produced in the pancreas and secreted into the small intestine. Additional enzymes secreted by cells that line the small intestine: most monosaccharades are converted to glucose by the liver.
