Protein Flashcards
(28 cards)
What is protein
- Protein is for growth, in pregnancy especially and in adolescence
- To repair body cells and tissues, including recovery after an illness or injury
- To produce enzymes needed for digestion
- To produce hormones that control body functions
- Protein provides a secondary source of energy
What sources can we get protein from ?
Animal sources - meat, chicken or steak. Dairy products, milk cheese and eggs.
Plant sources - pulses, peas and beans. Lentils, grains and nuts.
Novel sources - tofu, soya, TVP ( textured vegetable protein)
What amino acids do protein have?
Indispensable ESSENTIAL amino acid. These cannot be made by the body and so they must come from the diet. There are eight indispensable amino acids.
Dispensable NON-ESSENTIAL amino acid. These are produced by the body. Three a 12 dispensable amino acids
What is LBV and HBV?
The biological value relates to how many amino acids there are present in a protein.
If a food is missing one or more of the indispensable amino acids it has a low biological value ( LBV )
If a food has all the indispensable amino acid it has high biological value ( HBV )
An example of a LBV would be baked beans
An example of HBV would be steak
What is protein complementation?
This is when two low biological values are eaten together
An example of protein complementation would be eating beans on toast.
What is fibre?
A non digestible group of substances found in plant foods which can’t be completely digested by human digestive enzymes. As it is not absorbed by the body fibre then acts as a bulking agent and helps remove waste.
What are the health benefits of a rich fibre diet?
Reducing risk of cardiovascular disease
Reducing risk of type two diabetes
Reducing the risk of some cancer
Help to control and maintain a healthy weight
Helping prevent constipation
What are the two types of fibre?
Insoluble and soluble
What three ways can you increase fibre in your diet?
Whole meal breads
Include plenty of vegetables
Start the day with a high fibre breakfast
What is insoluble fibre?
Does not absorb or dissolve in water
So when it passes through our digestive system it adds bulk to faeces
What are the health benefits of insoluble fibre?
Reduces the risk of constipation
Helps maintain healthy weight
Improves digestive health as it gets rid of waste more effectively
What are 4 sources if insoluble fibre?
Whole grain foods, cereal
Bread and pasta
Fruit and vegetables
Nuts and seeds
What is soluble fibre?
Soluble in water
Absorbs water to form a gel-like substance that swells inside the digestive system.
What are the health benefits of soluble fibre?
Helps lower blood cholesterol levels
Helps to control blood sugar levels
What are sources of soluble fibre?
Oat and barley
Pulses
Fruit
Vegetables
What is obesity?
Medical term for a dietary disorder caused by excessive fat accumulation.
Those who’s body mass index is over 30 are classed as obese.
What are some major risk factors of obesity?
Type 2 diabetes
Cardiovascular disease
Some cancers
Hypertension
What factors contribute to obesity?
Unhealthy dietary choices
Increased energy increase
Lack of physical activity
Genetics
What is cardiovascular disease?
Term used to describe conditions affecting the heart or blood vessels.
This can include a stroke or coronary heart disease which can lead to a heart attack.
Cardiovascular disease is one of the main causes of death in the uk and is often associated with a build up of fatty deposits called cholesterol in the arteries.
This condition can be prevented by a good diet.
What lifestyle choices can lead to cardiovascular disease?
Smoking
Consuming high levels of alcohol
Diet low in fruit and veg
Family history
What dietary choices can help cardiovascular disease?
Eating 5-7 portions of fruit and veg a day
Reducing saturated fat
More physical activity
What is type 1 diabetes?
Auto immune condition where insulin producing cells are gradually destroyed and the pancreas stops making insulin.
Usually starts in childhood
Also known as insulin dependent diabetes
Which is controlled by insulin injections
What is type 2 diabetes?
Body does not produce enough insulin.
Developed as you get older
Caused by genetic or environmental factors
Can be controlled by diet and lifestyle choices
What can increase your risk of getting diabetes?
Being overweight
Age
Family history
Inactivity