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Lecture

FSHN 125 Lecture Notes - Coconut Oil, Homeostasis, Hypercholesterolemia


Department
Food Sci+Human Nutrition
Course Code
FSHN 125
Professor
John Avens

Page:
of 3
25 September
Learning Exercise #33
Humans require cholesterol in their:
A. Body
B. Diet
C. A and B
D. Neither A not B
Learning Objective
What is “cholesterol”?
Animal sterol
Lipid
Solid at room temperature
Whitish
Waxy
Insoluble in water
Learning Exercise #34
A vegan-vegetarian, having no animal cholesterol in their diet, will:
*A. Manufacture more cholesterol in their body than non-vegetarians
B. Have much less cholesterol in their blood and body cells than non-
vegetarians
C. Have no cholesterol in their body
D. Have only vegetable-cholesterol in their body
E. B and D only
Learning Objective
How do we get cholesterol in our body?
Made by body cells
Consumed in the diet
0.3 grams of cholesterol ingested per day
55% absorbed – 0.16 gram
Body synthesizes 0.7 grams daily
19% or less of cholesterol in body comes from diet
Learning Objective
Explain why in any one normal, healthy human; a relatively steady level of cholesterol in
the blood and tissues is maintained, even after large amounts of cholesterol in food are
occasionally ingested.
“Homeostasis”
Stops synthesis of cholesterol in cells and absorption of cholesterol
Learning Objective
Do we need cholesterol in our body?
Yes
For what?
Component of bile (helps digest fats)
Precursor for hormones
Allows vitamin D absorption
Allows selective permeability of skin to water (rolls off)
Is cholesterol essential in our diet?
No
Why?
Sufficient amounts produced by body
Learning Exercise #35
Eating abnormally large amounts of food cholesterol occasionally, will result in:
A. All food cholesterol eaten being absorbed into lymph/blood
B. Proportionally increased amounts of food cholesterol being absorbed into
lymph/blood
C. Slight and temporary elevated blood cholesterol levels
D. Reduced synthesis of cholesterol in the liver
E. C and D only
Learning Objective
Compare the relative amount in food:
Fats (glycerides) – grams
Cholesterol – milligrams (much less)
Learning Exercise #36
Cholesterol can be found in:
A. Coconut oil and palm oil
B. Human blood
C. Human skin cells and liver
D. B and C only
E. A, B, and C