Lipids contain the same three elements of carbohydrates (carbon, hydrogen, oxygen)
Food rich in animal fats:
Plant oils used for cooking:
Products made from oils (eg. margarine)
Lipids make up about 10% of our body's mass
Chemical 'building blocks' of lipids are two types of molecule
Glycerol and fatty acids
Glycerol = oily liquid (also known as glycerine and used in cosmetics)
One glycerol molecule is attached to three fatty acid molecules
There are many different types of fatty acid and they give us many different kinds of lipid found in food
Too much lipid is unhealthy (but it is an essential part of our diet)
saturated fat and a lipid compound called cholesterol have been linked to heart disease