Nutrition:Fats & Cholesterol

Chapter 10Lesson 2

Pages 261-262

Fats & Cholesterol Objective 1:Objective 1: Compare and contrast Compare and contrast

saturated, unsaturated and trans fatty saturated, unsaturated and trans fatty acidsacids

Objective 2: Objective 2: Understand cholesterol Understand cholesterol and the difference between HDL and and the difference between HDL and LDLLDL

Types of Fats

Classified as 2 types depending on Classified as 2 types depending on their chemical compositiontheir chemical composition SaturatedSaturated UnsaturatedUnsaturated Most fats in foods are a mixture of Most fats in foods are a mixture of

both typesboth types

No more than 25-35% of your daily No more than 25-35% of your daily caloric intake should come from fat.caloric intake should come from fat.

Saturated Fats

Saturated fats are mostly found in Saturated fats are mostly found in animal based foods.animal based foods. Examples: Animal fats/tropical oilsExamples: Animal fats/tropical oils

Palm oil, Coconut oilPalm oil, Coconut oil Beef, pork, egg yolks, and dairy foods are Beef, pork, egg yolks, and dairy foods are

higher in saturated fat than chicken and fish.higher in saturated fat than chicken and fish.

High intake of saturated fat High intake of saturated fat will increase bad cholesterol = will increase bad cholesterol = increased risk of heart diseaseincreased risk of heart disease

Unsaturated Fats

Unsaturated fats are mainly found Unsaturated fats are mainly found in vegetables oils, nuts and seeds.in vegetables oils, nuts and seeds.

Examples: Vegetable fatsExamples: Vegetable fats Olive, canola, soybean, corn and Olive, canola, soybean, corn and

cottonseed oilscottonseed oils

Increase in unsaturated fats Increase in unsaturated fats will Increase of good will Increase of good cholesterol =cholesterol =

lower risk of heart diseaselower risk of heart disease

Trans-Fats/ Hydrogenated Oils

Trans fatty AcidsTrans fatty Acids Trans fats (AKA partially hydrogenated oils) Trans fats (AKA partially hydrogenated oils)

are created in an industrial process that adds are created in an industrial process that adds hydrogen to liquid vegetable oils to make hydrogen to liquid vegetable oils to make them more solid. them more solid.  Trans fats give foods a desirable taste and texture. Trans fats give foods a desirable taste and texture.  Inexpensive to produce and lasts a long timeInexpensive to produce and lasts a long time Examples:Examples:

Fried Foods (Fries, Doughnuts, Chicken)Fried Foods (Fries, Doughnuts, Chicken) Baked Goods (Pie crust, cookies, crackers, Baked Goods (Pie crust, cookies, crackers,

margarine)margarine)

Decreases good cholesterol and Decreases good cholesterol and increases bad cholesterol levelsincreases bad cholesterol levels

Video

Trans-FatsTrans-Fats “ “ How Trans-Fats have became our Enemy”How Trans-Fats have became our Enemy” http://

www.youtube.com/watch?v=5aukVvYC-WA

Supersize me “The Burning Fry Experiment”Supersize me “The Burning Fry Experiment”

http://www.youtube.com/watch?v=gmT5E-http://www.youtube.com/watch?v=gmT5E-K1VX4K1VX4

Role of Fats

Adipose TissueAdipose Tissue: Stored body fat.: Stored body fat. Fats provide a concentrated form of energy.Fats provide a concentrated form of energy. They are also important to brain development, They are also important to brain development,

blood clotting, and controlling inflammation.blood clotting, and controlling inflammation. They also help maintain healthy skin and hair.They also help maintain healthy skin and hair. Fats are essential to transport vitamins, A,D,E, Fats are essential to transport vitamins, A,D,E,

and K in your blood.and K in your blood. Fats add texture and flavor to foodsFats add texture and flavor to foods Help satisfy hunger longer than carbs and Help satisfy hunger longer than carbs and

proteinsproteins Insulation for the body.Insulation for the body.

Cholesterol

Cholesterol: A waxy lipid-like substance Cholesterol: A waxy lipid-like substance that circulates in blood.that circulates in blood. Is needed to create cell walls, certain Is needed to create cell walls, certain

hormones, and vitamin D.hormones, and vitamin D. 2 major types2 major types LDL- Low Density LDL- Low Density “bad”“bad” HDL- High Density HDL- High Density “good” “good”

A high intake saturated fats and/or trans A high intake saturated fats and/or trans fats can lead to an increase in fats can lead to an increase in cholesterol and lead to a build up in the cholesterol and lead to a build up in the arteries.arteries.

Video clip

What is heart disease video:What is heart disease video: http://www.youtube.com/watch?http://www.youtube.com/watch?

v=U5su_DVcE2Qv=U5su_DVcE2Q

What is a stroke video:What is a stroke video: http://www.youtube.com/watch?http://www.youtube.com/watch?

v=nCqhnTedZMsv=nCqhnTedZMs