Summary lipids

LIPIDS:
CLASSIFICATION OF FATS / OILS
Saturated fats Polyunsaturated Trans fats
fats
Fats that are Fats that are liquid at Fats formed by
solid at room room temperature hydrogeneration, usually
temperature e.g. e.g. found in:
● Butter ● Sunflower oil, oily ● Fried food
fish
● Fat from meat ● Doughnuts
● Olive Oil
● Hard margarine

FUNCTIONS OF FATS
• Provide energy to the body
• Protect the internal organs
• Contain the fat-soluble vitamins – Vitamin K,A,D,E
• Provide essential fatty acids
• Help to regulate body temperature


SOURCES OF FAT
• Butter; cream; fatty bacon
• Plant oils (canola; sunflower; olive; peanut)
• Margarine; mayonnaise; salad dressings
• Nuts

High blood cholesterol
 Cholesterol is a waxy substance produced by the liver.
 Body needs cholesterol as it is used to build healthy cells.
 If cholesterol levels in the blood are too high.
 It causes a build-up of fatty plaque in the arteries.
 This narrows the arteries and obstructs blood flow.
 If the heart does not receive oxygen-rich blood, risk of heart attack is
increased.



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