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Broken down into fatty acids, triglycerides & glycerol

Types of fat: Monounsaturated, polysaturated, saturated & trans fat

Stored around internal organs such as the heart.

Fat stored around organs is known as visceral.

Fat stored under the skin is subcutaneous.

Saturated fatty acids contain no double bond; they are fully saturated with hydrogen.

The main monounsaturated fatty acid is oleic acid, it has one double bond

Polyunsaturated fatty acids contain two or more double bonds.

Carboxyl group makes fat an acid

Glycerol backbone & three-fatty acids (each molecule)

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Lipids cushion internal and reproductive organs

Carrier for fat soluble vitamins (A, D, E, K) and phytochemicals

transport fat-soluble nutrients into the body

All children need fats/lipids to grow

storing energy - lipids may be broken down to yield large amounts of energy

Fats help with regulation of hormones - Triacylglycerols, for example, adipose tissue secretes the hormone leptin, which regulates appetite

Fats provide metabolic fuel and helps our bodies with digestion

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Recommended daily intake of fat for adults is 20-35% of total calories

Assuming the recommended daily calorie intake is 2,000 for women and 2,500 for men:

Women should eat at least 52g of fat/day

Men should eat at least 65g of fat/day

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- The energy content of fat is 37 kJ/g which is higher than carbs and protein which are 17kJ/g.
- Energy density of oils: 885kcal per 100g
- Fats are very energy dense
-Fats have the highest energy content of all macronutrients

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- The nervous system is covered by 'blankets' of fats
- Fats contain vitamins D, A, K and E (also antioxidants) and are part of cell membranes
- Crucial for early stages of brain development
- 4 main types of fats - Monosaturated, Polyunsaturated, Saturated and Trans Fats
-  Examples of foods that contain fats are butter, oil, nuts, meat, fish and dairy
- There are visible fats (we add them ourselves during cooking), and invisible fats (contained in pre-packaged foods)
- Too much of certain types of fats can be harmful to you
-Excessive intake of saturated and trans fat can lead to heart disease and increase in cholesterol levels.
- Excess glucose is converted to fat and stored for later use
- Trans fatty acids are made by partial hydrogenation of polyunsaturated oils in food processing
- Saturated fats are mainly found in animal-based foods
- Polyunsaturates & monounsaturates are mainly found in plant-based foods