- The red light means that the food is high in certain things which you should be trying to cut down on.
- The amber light means that the food is neither high nor low within the nutrients which mean it will be ok.
- The green light means that the food is low in the nutrients; this means that it’s a healthy product.
In January 2008, Jamie school dinners actually mentioned what has actually gone wrong with the food, and that’s why it use to be healthy and why it has gone wrong now.
Jamie Oliver suggested that in nowadays children will die before them parents due to what they eat.
Looking at the year 1950 to 2008 the waist has gone up by eight pounds.
This research shows that one is four people are now obese in the year 2008 therefore from thirty years ago the amount of sugar in the “Kellogg’s” cereal has doubled compared to now. This has also happened with the breads too.
Reference:
Information and statistics from: - channel 4 programmes. “Eat to save your life.” January 2008.
Dietary Intake
From the Second World War onwards the nutritional guidance has changed in the dietary recommendation. Due to our knowledge in science of the nutrition has gone by, an example of this would be during the Second World War they actually suggested consumption was only one egg a day where as now it is not more then two eggs a week.
In the year 1930 – 1940 there was high amount of fat on meat was suggested as for now they are not.
Reference:
Health and Social Care by Anne Raddington and Peter Waltham Nelson 1995
(Task 2 P2)
Micronutrients are a substance, such as a vitamin or mineral, that is essential in minute amounts for the proper growth and metabolism of a living organism.
- Vitamins are raw substances that are essential in small amounts therefore it’s usually in milligrams or micrograms per day.
- All vitamins can be supplied in diets.
- Micronutrients are an essential part of our nutrients for maintaining a healthy body as well as a good mind.
- Micronutrients are usually found in some within some of the food which we eat.
- Vitamins are actually essential for many different reasons; the main function is to keep healthy.
There are six main vitamins are A, D, E, K these are normally stored within the liver however if these vitamins are taken in large amounts it can become very toxic and even course death.
Vitamin A is needed because it is vital in the formation and configuration of skin and membranes, it is important for the immune system and it is also involved in the regeneration and renewal of visual purple in the retina of the eye, and this is needed for good vision in the dim light.
Vitamin A is also needed for growth and good functioning of the cells, the deficiency of the vitamin A can lead to blindness as for a large amount of vitamin A can become poisonous and can also cause death.
Vitamin A is not found within the food, it is only presented in food such as rational and beta – carotene.
The body can convert the beta – carotene into retinol therefore the retinol is only found in animals food such as liver, milk, cheese, vegetables and its also found within the carrots.
- Cholecalciferol Vitamin D
Vitamin D is needed for the growth and maintenance of strong bones and teeth, it helps to control the absorptions of certain minerals and it is also essential within cell division therefore vitamin D tends to help the absorption of calcium from the food and then it eventually removes the minerals into the structure of the bones and the teeth.
Vitamin D is formed chemically within the body threw a reaction of sunlight on the skin however whenever our body goes into the sunlight the vitamin D is being created therefore a little amount of vitamin D can be found within the foods.
Children’s food should contain vitamin D because many children may not get the right amount of sunlight which is required therefore to prevent them having a deficiency of vitamin D they diet should contain some vitamin D.
Women who are pregnant need more vitamin D to help with the developing of the baby. Brest feeding women need vitamin D for the making of the milk.
Lack of vitamin D can cause side effects, these are that children may tend to get rickets and the adults may get osteomalacia. This is softening of the bones, tenderness, muscular weakness, loss of weight and even anorexia.
Foods which contain vitamin D are margarine, butter, fatty fish, eggs, breakfast cereals.
- Vitamin E is a fat soluble vitamin and is made up of a group of compounds called tocopherols.
- Vitamin E is needed for a structure of the cell membranes and it’s also needed to prevent the oxidations and corrosion of fats, therefore vitamin E acts like an antioxidant and the job is to protect the cells from getting damaged from the viruses.
- Vitamin E could also reduce the risk of cancer and hart disease however there are no recommendation for the vitamin E in the UK.
- The amount of vitamin E you tend to require is all dependant of the amount of polyunsaturated fatty acids in your actual diet.
- There are certain foods which contain vitamin E such as nuts, whole grain, eggs, vegetable oil, also margarine made from vegetable oils.
Reference:
21 / 6 / 08
- Vitamin k is a very important source for blood clotting within the wound.
- It is also important in the creation and the making of the normal bone structure.
- These vitamins can be made from the bacteria within the large intestine.
- Vitamin K is found in both the plants and animal product but mainly in dark green leafy vegetables, fruit, dairy products, vegetable oil and cereals.
- There is hardly and deficiency seen however it can accrue in newborn babies, coursing bleeding.
- To prevent bleeding vitamin K is normally given to all the babies more and less straight away after they have been born.
Reference:
Website viewed on 25/ 6 / 08
Anti – Oxidants
Anti – Oxidants are known as vitamin A, C and E. The roles of these vitamins are to fight of diseases.
Vitamin B
There are a lot of vitamins B however each one of them has their own functions for example:-
- Within our body is a coenzyme which is needed for lots of metabolic changes, therefore this involves the breakdown of carbohydrates to provide the body with energy.
- A deficiency of thiamin leads to a disease called beriberi however this is very rear within the UK, therefore in the UK Wernicke korsakoff syndrome is found in many alcoholics.
- Symptoms within Wernicke korsakoff syndrome include nystogmus of the eye and a wide based walk with confusion.
Reference:
Website viewed on 25/ 6 / 08
This forms a coenzyme which is needed for releasing the energy from the food.
It is mainly found in:
- Milk
- Meat
- Egg
- Fortified cereal products
A deficiency of riboflavin can lead to cracking at the corner of the lips (Cheilosis) a sour tongue (Glossitis) and skin changes.
Reference:
Website viewed on 25/ 6 / 08
Folic acid helps with the formation of the red blood cells however the food sources of folic acids are dark green vegetables and also liver meal product.
Reference:
Website viewed on 25/ 6 / 08
Vitamin C / ascorbic acid is needed for the making of the collagens this helps to heel the wound, it is usually found within the food products such as:-
Their role is to prevent scurvy.
- Vitamin C is a powerful Anti – Oxidant therefore it can easily destroyed.
- Vitamin C is known to aid the absorption of iron from the vegetable sources.
- A deficiency of Vitamin C can lead to scurvy this is the bleeding of the gum, loosening and eventual loss of tooth and it can also course bone pain.
Reference:
Website viewed on 25/ 6 / 08
- Macronutrients are large nutrients that are needed in our bodies.
- Micronutrients are an element of our diet that will provide with the correct amount of energy which our body will require to survive; they are also needed for metabolism growth and are crucial for the way the body functions.
- They are also three main types of micronutrients which are broken down into
Reference:
Website viewed at 25 / 6 / 08
- Carbohydrates are a group of compounds which are found within plants and animals.
- Everybody needs carbohydrates because they provide us with energy.
- All carbohydrates are made up as
NUTRIENTS RATIO
- Carbon
- Hydrogen 1:2:1
- Oxygen
- There are three main types of carbohydrates these are
- Sugar
- Starches
- Non – starch polysaccharides (fiber)
Reference:
Website viewed on 25 / 6 / 08
- Biological Functions of Carbohydrates
- The main reason for sugar and starch is to actually provide energy for the body however once they are broken up into monosaccharide they might be either
- Delivered to all the cells of they body so that they can be used straight away for energy through a process called respiration.
- Converted into glycogen and stored within the liver and muscles as readily available source of energy.
- Converted into fatty acids and then stored in the adipose tissue as a source of energy.
- Fiber is important to functioning the digestive system because the different goods of the fiber tends to actually affect their biological function within the body however if the fiber is taken is excess then this can lead to reducing the absorption of some minerals.
- Monosaccharide are water soluble and they very in sweetness however their tastes can be modified therefore this are done by cooking for example glucose, fructose and glactose.
- Another name for glucose is (dextrose) this accurse naturally within:-
- Fruits
- Plant juices
- In the blood of the living animal,
- Most carbohydrates in our foods are converted to glucose during digestion however within the food industry glucose is processed from starch by the actions of the acids and enzymes; therefore it is then used in confectionary, soft drinks and also jams.
- Galactose is naturally found within the milk, this also includes human breast milk.
Reference
Website viewed on 26 / 6 / 08
- Disaccharides is two monosaccharide linked together.
- Disaccharides normally relates to two sugars, however this is similar to monosaccharide.
- Disaccharides are also water soluble which tend to very within sweetness however cooking can also change their taste an example of this would be sucrose, maltose and lactose.
Reference
Website viewed on 26 / 6 / 08
- Sucrose is one unit of glucose and one unit of fructose.
- Sucrose actually occurs naturally within
- Sugar cane
- Sugar beet
- Very little amount in vegetables such as carrots.
- Normally table sugars are jus basically pure sucrose.
Reference:
Website viewed on 26 / 6 / 08
Maltose is one unit of glucose and one unit of glactose.
Maltose is made during the process and the breakdown of starch by digestion, however in brewing industries it is produced when the grains are germinated and developed for making of malt.
Reference:
Website viewed on 26 / 6 / 08
Lactose is made of one unit glucose and one unit glactose, however lactose only occurs within the milk, this also includes human breast milk.
Reference:
Website viewed on 26 / 6 / 08
Polysaccharide is a large number of monosaccharide linked together, however these are known as complex carbohydrates therefore polysaccharide basically means many sugars an example of this would be starch and non – polysaccharide which stands for (NSP)
Reference:
Website viewed on 26 / 6 / 08
Starch is a vital storage substance in plant cells however it is made from a long chain of all glucose molecules therefore starch is also presented in grains, pulses as well as rice, pasta and also bread and potatoes.
In raw form it is indigestible therefore when they are heated and cooked; it is easy to enlarge which makes it easy to digest.
Reference:
Website viewed on 26 / 6 / 08
Glycogen is an important storage in the animal cells however glycogen is quiet similar to starch but instead it is stored within our liver and muscles as an energy reserve therefore after the animal has passed away glucose breaks down into glucose again.
Reference:
Website viewed on 26 / 6 / 08
(NSP) Non – Starch Polysaccharides / Fiber
- NSP is found within the cell wall of many food sources such as:-
- Vegetables
- Fruits
- Pulses
- Cereal grains
- This is where they tend to provide part of the plant structure however fibers which are found within:-
- Are mainly insoluble therefore the once that are found within the fruit, vegetables, cereal oats contain soluble forms including pectin’s and gums.
- You should try to eat plenty of fibers as it is very good for you.
- You get fibers from a lot of brown foods like brown bread however peas, beans, lentils and oats contain fibers, therefore fiber is also known as “non – starch polysaccharide” or “roughage”
Reference:
Class notes C. Harrison / 2 / 08
Website viewed on 26 / 2 / 08
Cellulose can’t be digested by humans because cellulose is a structure of a plant wall; however the cellulose is a big major source of fiber in the diets and it adds bulk to the faeces because its water blind capacity, therefore it supports the routes of the digestible materials and waste products thought the intestines and it helps to stop prevent constipation.
Reference:
Website viewed on 26 / 6 / 08
Protein is a micronutrient which is needed by the body to build cells and tissues, however protein are needed for growth and repair of the body therefore protein also provides energy.
Different foods contain different amounts and mixture of amino acids.
Amino acids are the building blocks of protein because the body can produce some amino acids; however the amino acids are the building blocks of protein, therefore these are known as indispensable amino acids which can’t be produced by the body because this must be supplied by the diet.
There actually eight indispensable amino acids for adults and nine for the adults which are Leucine, Isoleucine, Valine, Threonine, Methionine, Phreonine, Tryptophan, Lysine, (Histidine)
The different types of protein also has different functions within the body, some give support to chemical reactions such as enzymes, hormones, antibodies, whilst others form part of a structure cells such as membrane and collagen.
There is a various range of protein and each individual has their own name an example of this would be albumen which is egg white and collagen which is found within the meat.
Reference:
Website viewed on 18 / 7 / 08
All proteins are compounds of the chemical
- Carbons,
- Hydrogen
- Oxygen
- Nitrogen
Some proteins also contain Sulphur and phosphorus.
The amount of proteins we need changes during our life time.
After protein is eaten it is then broken down by digestion within the body.
Protein are made of hundreds or thousands of amino acids, there are approximately 20 different amino acids which are used within the chains, however if you look at the way they are actually chained up they give the protein its actual characteristic structural, and its also enzymatic properties, however protein molecules are not long chains, the source of protein foods is meat, fish, lentils, beans and eggs
Reference
Website viewed on 18 / 7 / 08
All living cells contain fats in their structure.
Fats are soluble which are insoluble within the water but soluble in organic structure (solvents) like Acetone.
Fats are greasy within their texture and non – volatile, because the building blocks are fatty acids and glycerol, however the fatty acids are made up of a carbon atom chain with a methyl group at one end and an acid group at the other end therefore the hydrogen atom are actually attached to the carbon atom chain.
The number per carbon does actually depend on whether the fatty acid is actually saturated or unsaturated. If the fatty acids have all the hydrogen atoms it can actually seem to hold then it then its said to be saturated.
If some have been missing and have been replaced by a double bond between the carbon atoms then the fatty acids is said to be unsaturated.
Tran’s fats are produced as they are produced, as a result of processing and making. They are found within products containing hardened fats such as margarine, pastry biscuits and meat.
- Structure of Lipids or Fats
All fats are made from compounds or carbon hydrogen and oxygen. The main difference between lipids and carbohydrates is that proportions of oxygen in the lipids are lower.
Reference:
Website viewed on 18 / 7 /08
Each fatty acid is made up of a chain or carbon atom with hydrogen atom attached, however there are certain fatty acids which are:-
- Saturated
- Monounsaturated
- Polyunsaturated
Saturated fats have many hydrogen atoms as they can hold Palma-tic acids and steric acid; these are found in hard fats such as:-
- Butter
- Lard
- Suet
- Coco Powder
Monounsaturated fats tend to have double bonds. This mean there are less hydrogen which has atoms attached to it, for example oleic acid which is found in most fats and also in olive oil.
Polyunsaturated fats have two or even more double bonds an example of this is linolenic acid which is found within vegetables oils such as
- Soya beans
- Corn
- Sunflower oil
Per gram their chronic out put is as follows
Protein 4 calories
Fat 9 calories
Carbohydrates 4 calories
Reference
Website viewed on 18 / 7 / 08
There are many functions of minerals and very small amounts which are found within the foods such as red meat, beef which is a good sauce of iron, vitamins, minerals which help your body to grow and stay healthy.
The minerals are used up by the body in order to perform a various amounts of different functions.
The major minerals are those which are needed within excess of at least 100 milligrams, there are two kinds of minerals which are:-
Your body needs large amounts of macro – minerals which includes:
- Calcium
- Magnesium
- Sodium
- Potassium
- Chloride
- Sulphur
- Phosphorus
Your body tends to need very little amount of trace a mineral which includes:
- Iron
- Manganese
- Copper
- Iodine
- Zink
- Cobalt
- Fluoride
- Selenium
Reference:
Website viewed on 18 / 7 / 08
There are some minerals which we actually gain from our foods these are:-
Calcium is know to be the best micro mineral for our bones because this mineral actually helps to build healthy strong bones so that we can do everything and its also for our skeleton to stand up straight.
As well as bones the minerals also helps to build strong healthy teeth.
Foods which contain calcium are dairy products such as:
- Milk
- Cheese
- Yoghurt
- Canned Salmon
- Sardines with Bones
- Green Vegetables
This mineral is needed in order to transport oxygen from our lungs to the rest of our body because the whole body actually needs oxygen in order to stay alive and also to stay healthy.
Iron is very important for our body as it helps with the formation of hemoglobin.
Hemoglobin is important because its part of our red blood cells which carry oxygen around the whole body.
Food which contains iron is:
- Meat
- Tuna
- Salmon
- Eggs
- Beans
- Backed potatoes with the actual skin
- Dried fruit such as raisins
- Green leafy vegetables
- Oats
Reference:
Website viewed on 18 / 7 / 08
Potassium is needed order to keep your muscles and nervous system working in the correct way because our blood and muscles tend to contain water, potassium is very useful for then as it makes sure that the amount of water is just perfect.
Foods which contain potassium are:
- Bananas
- Broccoli
- Tomatoes with its skin
- Green leafy
- Vegetables
- Orange and other citrus fruit
- Dried fruit such as raisins
Other food products such as:
- Beans
- Lentils
- Pease
- Peanuts
Reference:
Website viewed on 18 / 7 / 08
Zink is a useful mineral because it helps with the immune system, however the immune system is for fighting of illnesses and infections, therefore it helps the cell grow and to heal any wounds and cuts.
The foods which are rich in zinc are:
- Beef
- Pork
- Lamb
- Pease
- Beans
- Lentils
- Peanuts
The four main minerals has been mentioned above however if you lack any of these minerals then it could course certain side affects an example of this would be if a child take less calcium then this can lead them to having weak bones.
Reference:
Website viewed on 18 / 7 / 08
Alcohol intake is very dangerous for children, teenagers and also adults because alcohol is like a drug type substance and many people tend to drink it not knowing that it causes major problems to the health, body and mind.
Alcohol is know to be depressant this means that it is a drug which slows down and even depresses the brain, and also changes the persons skills and capability towards thinking, speaking and to see things in a normal way this may loose stability to stay up right because they will be seeing doubles in stead of single things and may walk into things.
Alcohol tends to make a person feel all lively and happy but as time passes it may course a person to get into an argument or even cry this means the people or person who drinks alcohol may have a mood swing.
When people drink too much alcohol their brain might make them do and say things which in reality they don’t really mean to say it however they may tend to harm those selves.
Alcohol is very dangerous for people to drink and then drive as it can course them to have accidents, drinking too much can course the person to puke up continuously and could lead to alcohol poisoning which could even kill you.
If alcohol is taken in large amounts then it could damage the body and liver.
Drinking too much can lead the person from becoming alcoholic this is a person who craves for alcohol every second, of every minute, of hour, of night, of every day, of every year, an alcoholic finds it very difficult to stop drinking and needs serious help maybe needed.
Alcoholism is ending this means it continues as time goes by, it might get worse as the person might start to experience health problems which are related to drinking as well as damage to the liver alcohol can also damage the pancreas, heart and also the brain.
Reference:
Class notes C. Harrison 1 / 08
Website viewed on 21 / 7 / 08
Water is important for our body because it makes up two thirds of our body weight, without water your body will stop functioning properly.
People can survive without food for weeks but a couple of days without water because you will get dehydrated this are when you lose so much water that the normal physiologic function is not able to take place therefore this courses systems such as fainting or even nausea.
You can also lose water by vomiting constantly, diarrhea, sweating due to exercising or even because of hot weather.
The metabolic process in the body generates approximately 2.5 liters of water a day.
Water can be taken either directly or indirectly as part of food, fruit and vegetables contain round about 90% of water.
Your body has many jobs to complete and in order to complete them it actually needs water an example of this is that your blood contains a lot of water and carries oxygen around all the cells within the entire body, without oxygen your body cells will die and your body will stop functioning properly.
Chemical reactions which take place within the body produce and make water; this is used in the body as a main solvent in which chemical reactions take place this is because it is used to help with digestion and to get rid of all the waste, water is also used for transporting and passing substances around the body.
Water is part of your immune system which helps to fight illnesses and diseases because the water is an important part of all the fluids in your body; each individual cell tends to depend on water in order to function properly.
The kidney carefully controls and adjusts the balance of water this is when the kidney and the brain controls the amount of water sent out by the body for example when the blood volume is low, and then the concentration of solutes within the blood is high.
The brain tends to react to this matter by motivating the pituitary gland to actually release the ADH which stands for anti- diuretic hormones, this then signals the kidney to reabsorb re-circulate the water.
The water intoxication occurs when there is an excess amount of fluids within the body, the excess fluids may collect within the muscles particularly within the legs and feet this is called the edema.
The system of water intoxication are convulsion, confusion and it can also lead to death however it is recommended that an adult should drink up to eight to ten units of water a day and children should drink up to eight to twelve units of water a day, this is because when the body is loosing water constantly, the concentration of solutes within the blood tends to become too high, therefore the solutes attracts the water from the salivary gland which then makes the mouth dry, this then courses the person to feel thirsty.
Reference:
Class notes C. Harrison 1 / 2008
Website viewed on 22 / 7 / 08