Vitamin A was given the first letter of the alphabet for a name because it was the first vitamin to be discovered. It was found that vitamin A has a large number of uses in the body including keeping eyes healthy, aiding cell growth and also helping boost the immune system. However, vitamin A is not only absorbed directly but it is also created by the body by converting beta carotene into vitamin A.
Vitamin A itself is found in a number of foods such as eggs, milk, liver and meat. Beta carotene that the body can convert into vitamin A is found in many fruits and vegetables, especially the red, orange and green coloured ones. The most important point to remember that consuming too much pure vitamin A can be toxic. It is essential not to exceed the recommended daily allowance for vitamin A. The actual recommended allowance of vitamin A varies depending on a person’s age, sex and other factors. While the actual amount of vitamin A consumed may be toxic if the recommended daily allowance is exceeded, there is a far higher limit to how much beta carotene can be consumed. Therefore it is advisable to concentrate on obtaining the greatest amount of beta carotene which the body can then convert to vitamin A, rather than consuming vast quantities of pure vitamin A rich foods.
Many people will remember being told that eating lots of carrots helps you to see in the dark and that is down to the vitamin A that is produced from the high levels of beta carotene that are found in the vegetables. Other foods which have high levels of beta carotene that can be converted to vitamin A include tomatoes and dark green leafy vegetables, such as spinach. Beta carotene is not only used to form vitamin A, but it is also a powerful antioxidant in itself. None of the beta carotene that is absorbed is wasted as any excess after conversion to vitamin A has taken place is used to fight the harmful free radicals within the body. Vitamin A also helps fight infections and illnesses by helping tissues that line various parts of the body, including the eyes, mouth, nose, throat and lungs, to grow and also to repair them if they are damaged to prevent infection. Children also need plenty of vitamin A to help their bones and teeth to develop properly.
Tuesday, March 31, 2009
Thursday, March 26, 2009
How to Store Vitamins
There are two main types of vitamins, water soluble vitamins and fat soluble vitamins, and the way that the body does or does not store vitamin content taken from food depends on which type it is. The body cannot store water soluble vitamins and this means that a person needs to replenish their water soluble vitamin intake on a daily basis. The eight B vitamins and vitamin C are water soluble vitamins and the body cannot store vitamin content that is either of these.
It is not simply that the body cannot store vitamins that are water soluble but also the water soluble vitamins are easily destroyed by improper storage, handling, or cooking of foods that contain these vitamins. In particular, it is important not to overcook vegetables by boiling as the water soluble vitamins are in effect washed out of them but this lack of being able to store vitamins that are water soluble can be overcome by light cooking or steaming and by using the water that vegetable have been cooked in to form sauces and gravies. As the body cannot store vitamin C or the other water soluble vitamins it is essential to eat a balanced diet with at least 5 portions of fruit and vegetables to ensure that enough vitamins are available for the body to use when necessary and a person does not suffer from a vitamin deficiency due to the body’s inability to store vitamin content.
On the other hand, the body can store vitamin content that is fat soluble. The body will store vitamin content in the fat cells so that it can be used when required and a person does not need to consume as many of these fat soluble vitamins on as frequent a basis as they do with water soluble vitamins. The fat cells store vitamin A, D, E, and K as these are all fat soluble vitamins.
It is also important to store vitamin supplements correctly to ensure that the beneficial qualities of these are not diminished. The best way to store vitamin supplements is in a container with a screw top lid and to keep the container in a dry place. When you store vitamin supplements it is also essential to check that they have not been kept longer than the expiration date. The vitamin content of supplements cannot be guaranteed if you store vitamin tablets past their use by date.
It is not simply that the body cannot store vitamins that are water soluble but also the water soluble vitamins are easily destroyed by improper storage, handling, or cooking of foods that contain these vitamins. In particular, it is important not to overcook vegetables by boiling as the water soluble vitamins are in effect washed out of them but this lack of being able to store vitamins that are water soluble can be overcome by light cooking or steaming and by using the water that vegetable have been cooked in to form sauces and gravies. As the body cannot store vitamin C or the other water soluble vitamins it is essential to eat a balanced diet with at least 5 portions of fruit and vegetables to ensure that enough vitamins are available for the body to use when necessary and a person does not suffer from a vitamin deficiency due to the body’s inability to store vitamin content.
On the other hand, the body can store vitamin content that is fat soluble. The body will store vitamin content in the fat cells so that it can be used when required and a person does not need to consume as many of these fat soluble vitamins on as frequent a basis as they do with water soluble vitamins. The fat cells store vitamin A, D, E, and K as these are all fat soluble vitamins.
It is also important to store vitamin supplements correctly to ensure that the beneficial qualities of these are not diminished. The best way to store vitamin supplements is in a container with a screw top lid and to keep the container in a dry place. When you store vitamin supplements it is also essential to check that they have not been kept longer than the expiration date. The vitamin content of supplements cannot be guaranteed if you store vitamin tablets past their use by date.
Taking a Vitamin Supplement
There are a number of essential vitamins that the body needs to function properly and it is possible to take these in the form f a vitamin supplement. The majority of people do not have a balanced diet and they may be lacking in certain vitamins which means that they require a vitamin supplement to ensure that they do not have a deficiency of an essential vitamin. A health professional or dietary technician is the best person to give advice on any vitamin supplement that a person should take. It is important to seek professional advice before taking any vitamin supplement. This is because there are some vitamins that can be toxic if too much is consumed and a vitamin supplement may not be appropriate if there is enough of the vitamin already in the food a person eats.
Some categories of people may require more types of vitamin supplement than others. Vegetarians are often deficient in certain vitamins that are only found in animal products, for example, and a vitamin supplement is the ideal solution to this problem. Vegetarians do need to be aware that some vitamin supplement manufacturing processes involve animal products and it is important for them to read the labels. A large number of synthetic vitamin supplement products are available which will enable a vegetarian to take them without contravening their dietary beliefs or needs.
Children will often need a vitamin supplement, especially when they are extremely young. This is because a lot of children do not eat a sufficient variety of foods in their early years and a vitamin supplement can help compensate for this natural deficiency. Breast feeding has long been recommended as a source of all the essential nutrients but women who choose not to or are unable to bottle feed may be concerned as to whether their baby needs a vitamin supplement. The large majority of baby milk formulas contain additional vitamins to prevent the need for a vitamin supplement to be given. It is important to discuss any concerns over the need for a baby or child to take a vitamin supplement with a health professional to ensure that the correct solution is found.
Elderly people or those suffering from certain diseases or illnesses are other groups of people that may need to take a vitamin supplement. The body may often need a vitamin supplement to compensate for a person not being able to consume the recommended daily allowance of certain vitamins through their normal diet.
Some categories of people may require more types of vitamin supplement than others. Vegetarians are often deficient in certain vitamins that are only found in animal products, for example, and a vitamin supplement is the ideal solution to this problem. Vegetarians do need to be aware that some vitamin supplement manufacturing processes involve animal products and it is important for them to read the labels. A large number of synthetic vitamin supplement products are available which will enable a vegetarian to take them without contravening their dietary beliefs or needs.
Children will often need a vitamin supplement, especially when they are extremely young. This is because a lot of children do not eat a sufficient variety of foods in their early years and a vitamin supplement can help compensate for this natural deficiency. Breast feeding has long been recommended as a source of all the essential nutrients but women who choose not to or are unable to bottle feed may be concerned as to whether their baby needs a vitamin supplement. The large majority of baby milk formulas contain additional vitamins to prevent the need for a vitamin supplement to be given. It is important to discuss any concerns over the need for a baby or child to take a vitamin supplement with a health professional to ensure that the correct solution is found.
Elderly people or those suffering from certain diseases or illnesses are other groups of people that may need to take a vitamin supplement. The body may often need a vitamin supplement to compensate for a person not being able to consume the recommended daily allowance of certain vitamins through their normal diet.
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