NUTRITION ALC+MASTW/MDA W/ET AC PKG
4th Edition
ISBN: 9780135158999
Author: Blake
Publisher: PEARSON
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Chapter 5.8, Problem 1TAI
Summary Introduction
To explain: The relationships between dietary cholesterol, saturated fats, and trans fats and the blood LDL cholesterol level, and the way it might been easy for Person A to confuse them.
Introduction: A biological organic compound that does not dissolve in water is called as lipid. A group of organic compounds that belong to lipids is called as fats and oils. The basic units of fats and oils are called as fatty acids. Food fats are made up of a mixture of unsaturated, saturated, and polyunsaturated fatty acids.
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- The food label in Figure 11.28 lists the nutrients and other substances in a package of ready-to-eat macaroni and cheese. Based on your reading in this chapter, how would you rate this products healthiness in terms of fats and carbohydrates? Figure 11.28 Food labels are useful health tools. Information on a food label can be used to ensure that you get the nutrients you need without exceeding recommended limits on less healthy substances such as salt, sugar, and trans fats. At present, the USDA is considering major revisions to food labels. The proposed changes include showing realistic serving sizes and sugars added by the manufacturer, and printing the calorie content per serving in larger, bolder type so that it is easier for consumers to make informed choices about purchases of prepared foods. (Left: USDA, US Department of Agriculture; Right: FoodCollection/SuperStock)arrow_forwardWhich of the following is a water-soluble vitamin? vitamin A vitamin E vitamin K vitamin Carrow_forwardWhich of the following statements is not true? Essential nutrients can be synthesized by the body Vitamins are required in small quantities for bodily function Some amino acids can be synthesized by the body, while others need to be obtained from diet Vitamins come in two categories: fat-soluble and water-soluble.arrow_forward
- Triglycerides are transported by chylomicrons because ________. they cannot move easily in the bLood stream because they are fat based, while the blood is water based they are too small to move by themselves the chylomicrons contain enzymes they need for anabolism they cannot fit across the intestinal membranearrow_forwardExcess carbohydrates and proteins are stored as _____. a. amino acids b. starches c. fats d. monosaccharidesarrow_forwardExcess glucose is stored as fat glucagon glycogen it is not stored in the bodyarrow_forward
- Many distance runners “carb load” the day before a big race. How does this eating strategy provide an advantage to the runner? The carbohydrates cause the release of insulin. The excess carbohydrates are converted to fats, which have a higher calorie density. The glucose from the carbohydrates lets the muscles make excess ATP overnight The excess carbohydrates can be stored in the muscles as glycogen.arrow_forwardWhich of the following statements is not true? a. Essential nutrients can be synthesized by the body. b. Vitamins are required in small quantities for bodily function. c. Some amino acids can be synthesized by the body, while others need to be obtained from diet. d. Vitamins come in two categories: fat-soluble and water-soluble.arrow_forwardEffects of Dietary Fats on Lipoprotein Levels Cholesterol that is made by the liver or that enters the body from food does not dissolve in blood, so it is carried through the bloodstream by lipoproteins. Low-density lipoprotein (LDL) carries cholesterol to body tissues such as artery walls, where it can form deposits associated with cardiovascular disease. Thus, LDL is often called bad cholesterol. Highdensity lipoprotein (HDL) carries cholesterol away from tissues to the liver for disposal, so HDL is often called good cholesterol. In 1990, Ronald Mensink and Martijn Katan published a study that tested the effects of different dietary fats on blood lipoprotein levels. Their results are shown in Figure 2.23. Figure 2.23 Effect of diet on lipoprotein levels. Researchers placed 59 men and women on a diet in which 10 percent of their daily energy intake consisted of cis fatty acids, trans fatty acids, or saturated fats. Blood LDL and HDL levels were measured after three weeks on the diet; averaged results are shown in mg/dL (milligrams per deciliter of blood). All subjects were tested on each of the diets. The ratio of LDL to HDL is also shown. Source, Mensink RP, Katan MB, Effect of dietary trans fatty acids on high-density and low-density lipoprotein cholesterol levels in healthy subjects. NEJM 323(7):43945. An elevated risk of heart disease has been correlated with increasing LDL-to-HDL ratios. Rank the three diets according to their predicted effect on cardiovascular health.arrow_forward
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