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 ofmyelin,
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
