NUTR 1010 Lecture : Nutrition Week 9.docx

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harlequincamel603

10 Apr 2012

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No bones about it: nutrients involved in bone health. Introduction to bones (3 general concepts about bones) Have many important roles in the body. 35% organic substances strength and flexibility: collagen (a fibrous protein) Secrete enzymes and acids to erode bone surface: minerals released into the bloodstream. Bone formation: formation of bone by osteoblasts. Highest amount attained during the years of normal bone growth: end of adolescence versus late 20s, site specific. Influenced by: genetics, nutrition, physical activity, disease, drugs. Dual energy x-ray absorptiometry (dexa: measures bone mineral density (bmd) Bone: monitor changes in bmd, determine risk of osteoporosis, bmd value compared, t-score (helps us determine if someone has osteoporosis or not) 4. 0 presence of osteoporosis: t-score: compares your bmd to average peak bone density of a 30 year old healthy adult of similar age and gender, -1. 0 to -2. 5 (low bone mass) osteopenia (reversible) Most prevalent bone disease in north america.

Related Questions

Chapter 11(The Science of Nutrition) focuses onnutrients involved in bone health. How is blood calcium regulated,and how are our bones affected in the process? What are some goodways to incorporate calcium into our diets? How would you advisesomeone with lactose intolerance?.... i.e., what foods could theyeat to get the recommended amounts of calcium? What other nutrientsare important in bone health? Your friend's grandmother just brokeher hip, and is asking you- so just what is osteoporosis, anyway?Who is at risk? What sorts of dietary and lifestyle habits increaserisk? Decrease risk?
Your answers/explanations?

1 focuses onnutrients involved in bone health. How is blood calcium regulated,and how are our bones affected in the process? What are some goodways to incorporate calcium into our diets? How would you advisesomeone with lactose intolerance?.... i.e., what foods could theyeat to get the recommended amounts of calcium? What other nutrientsare important in bone health? Your friend's grandmother just brokeher hip, and is asking you- so just what is osteoporosis, anyway?Who is at risk? What sorts of dietary and lifestyle habits increaserisk? Decrease risk?

Your answers/explanations?

2 Iron deficiency anemia isthe most common vitamin/mineral deficiency in the United States,especially among young children, teens, and women of childbearingage. What form of iron is most absorbable? Explain. What are somefood sources rich in iron?

What would youadvise a vegetarian to do in regards to optimizing blood levels ofiron? Discuss foods to eat, foods/nutrients that enhance ironabsorption, and foods/minerals/compounds that compete with or blockiron absorption.
The Nutri-Case looks at the case of Liz, whodoesn't eat red meat. Do you think she is at risk for irondeficiency? Other micronutrient deficiencies? Why or whynot?

blushporcupine949

Which statements about mineral bioavailabilty are true?

	A.	Vitamin E increases the bioavailability of calcium.
	B.	Ascorbic acid decreases the bioavailability of none-heme iron.
	C.	Non-heme iron is absorbed better than heme iron.
	D.	Phytate decreases the absorption of some minerals.

What is the best route to maintain adequate intakes of copper, cobalt, chromium, manganese and molybdenum?

	A.	Take a mineral supplement that contains 200% RDA for all 5 minerals every other day.
	B.	Drink water that has not been âsoftenedâ chemically
	C.	Eat foods that have not been heavily processed such as whole grains.
	D.	Use enriched bread and cereal products.

Identify correct functions for the minerals listed below.

	A.	phosphorus: component of niacin compound
	B.	chloride: component of gastric acid
	C.	sulfur: part of teeth and bones
	D.	calcium: coenzyme

orangeeel431

NUTR 1010 Lecture : Nutrition Week 9.docx

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