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Fats and
Oils
Fats and its compounds
are known as lipids. Liquids are called oils and solids are fats. A gram of
fat contains 9 calories.
Uses of Fat
- visible fats:
- provides a source of stored energy
- gives shapes to body
- cushions the skin
- acts as an insulation blanket that reduces heat
loss
- invisible fat: This hidden
fat,
- is part of every cell membrane
- is a component of myelin ,
- is a shock absorber that protects the
organs
- is a constituent of hormones and other
biochemicals
Risk factor
Heart attack
Saturated and Unsaturated
fatty acids
Saturated fat: are solid at
room temperature and get harder when chilled.
Monounsaturated fat: are
liquid at room temperature and thicker when chilled.
Polyunsaturated fat:
are liquid at room temperature and stay liquid when chilled.
Types of cholesterol
- LDL(bad cholesterol)
- protecrs against atherosclorsis.It is main
carrier of cholesterol
- HDL
- it recues LDL pecies and brings them back to
the liver
- VLDL
- It is main carrier of triglycerides
- It is less harmful than LDL
- It carries fat to the other parts of the
body.
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