The four main nutrients
Carbohydrates - For energy
Fats - For energy and insulation
Protein - Builds new cells (cell regeneration)
Fibre - For digestion
The rate at which chemical reactions take place in the body.
Can be affected by:
- inherited factors
BMI = mass/(height)2
Ways to reduce body mass:
- balanced diet
- low fat/ low calorie foods
- burn more energy than you take in
Anorexia and Obesity
Anorexia is caused by:
- excessive exercise
- laxative intake
Obesity is caused by:
- lack of exercise
Type 2 Diabetes and High Blood Pressure
Type 2 Diabetes is caused by:
- High fat intake
- High sugar intake (Low glucose levels in the body tell you to restore these levels)
High Blood Pressure (Hypertension) is caused by:
- high salt intake
- high fat intake
A substance which is made in the liver and carried in the blood.
Depends on how well your liver works and on your fat intake.
Can reduce or block your blood flow and increase the risk of heart disease.
Carried in 2 types of lipoproteins, which depend on different types of fats.
High Density Lipoprotein (HDLs) = 'Good' cholesterol
Low Density Lipoprotein (LDLs) = 'Bad' cholesterol
You need a balance of both.
Polyunsaturated fat - improve the balance of LDLs and HDLs
Monounsaturated fat - reduces cholesterol and improves balance of LDLs and HDLs
Saturated fat - Increases level of cholesterol