Fats(Lipids)

• They can be in solid or liquid form.Liquid fats are called oils
• Fats are made up of three elements. Carbon,Hydrogen and Oxygen(CHO)
• Fats contain twice as much carbon as protein,so it produces twice as much energy
• This is the Compostition of fats

  A) After/During Digestion

  B) Before Digestion

  
• The classification of fats are put into two groups,Saturated fats and Unsaturated fats
• Saturated fat-contains cholesterol(type of fat in blood).Found in foods that come from animals
• Unsaturated fat-doesn't contain cholesterol. Found in foods that come from vegetables or plant sources and in oily fish
• The soruces where you can find saturated fat is in butter,cream,cheese,eggs,fatty meats and pastries,cakes and biscuits
• The foods where you will find unsaturated fat is in avocado,nuts,seeds,vegetable oils,e.g.olive oil and oily fish
• Omega-3 fats are a type of unsaturated fat found in oily fish,nuts and seeds.It is important for brain development and it helps to lower blood cholesterol levels
• The Functions of fats is it produces heat and energy,Adipose tissue(a layer of fat under the skin)helps to keep the body warm,A layer of fat surrounds vital organs,like kidney&liver,to protect them from damage and Fats are a source of the fat-soluble vitamins A,D,E and K
• Overconsumption of fats>1.Obesity:Fats are high in kilocalories. Eating too much fat causes weight gain and obesity. 2. Coronary heart disease:Too much cholesterol in the blood causes it to stick to the artery walls increasing risk of heart attacks.
• The average adult should not consume more than 70g of fat per day.No more than 20g of this should be saturated fat.No more than 30% of your daily energy intake should be from fats.Get energy from carbohydrates and lean protein foods.
• Reducing fat in the diet: Limit high-fat foods,e.g.takeaways. Use low-fat cooking methods instead of frying. Modify recipes to reduce fat content. Choose low-fat products,e.g. low-fat cheese
• Why are the fatty acids separated from the gylcerol?


  So that they can be used by the body
• What is cholesterol?


  A type of fat found in the blood
• What happens if there is too much cholesterol in the blood?


  The cholesterol sticks to the artery walls,inreasing risk of heart attacks
• Where should your daily energy intake come from?

  Carbohydrates and lean protein foods
• Where can you get Omega-3 fats from?


  Oily fish,nuts and seeds