FATS
- Created by: Freya Woolley
- Created on: 12-05-15 10:20
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- Fats
- Why do we need fats?
- Provide the body with the most concentrated source of energy
- Supply the body with fat-soluble vitamins A,D,E and K
- Provide a protective layer around delicate organs
- Composition of fats
- Carbon, Oxygen and hydrogen
- Made up of one molecule glycerol and 3 fatty acids
- Saturated
- No double bonds, as all carbon atoms are saturated with hydrogen
- Unsaturated
- Have 2 or more double bonds
- Poly-unsaturated fatty acids- many double bonds
- Mono-unsaturated fatty acids- one double bond
- Animal fats
- Mostly saturated fatty acids converted into cholesterol in the liver
- Too much can clog arteries and cause heart disease
- All meats, eggs, milk, butter etc.
- Vegetable fats
- Mostly made up of unsaturated fatty acids not converted into cholestrol
- Thought to be healthier
- Mediterr-anean diets have lower rates of heart disease
- Corn, olive and sunflower oil, margerine, nuts
- Ways of cutting down on saturated fats
- Reduce fried foods eaten
- Cut all visible fat off meat
- Eat more chicken and fish rather than red meat
- Eat low fat spreads, cheese
- Use oil spray rather than oil
- Why do we need fats?
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