B1b

B1b - HUMAN HEALTH AND DIET

Food gives ENERGY and NUTRIENTS

A balanced diet contains carbohydrates, fats, protiens, minerals, vitamins, fibre and water

Carbohydrates: provide energy. Made up of simple sugars. Stored in the liver as glycogen or turned into fat if they are not used.

Fat: provide energy. Stored as adipose tissue under skin and around organs.

Protiens: used for growth and repair. Made up of amino acids. They are not stored.

Minerals: like iron for making haemoglobin in red blood cells

Vitamins: like vitamin C to prevent scurvy

Fibre: for healthy bowels and to prevent constipation

Water: prevents dehydration and to help remove waste

You might alter your diet as a result of:

• Beliefs
• Religious beliefs
• Medical issues (food allergies)
• Age
• Sex 
• Activity (builders need more calories than office workers)
• Personal choice

BMI

healthy body mass = balancing the amount of energy you use with the amount of energy you consume on a daily basis

BMI=Body Mass Index

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