All About Vitamin A
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.
Related topics
More Articles
A Guide To The B Complex Vitamins
The Importance Of The 12 B Vitamin
The Benefits Of Multi Vitamin Supplements
The Different Types Of B Vitamins
Related Products And FREE Videos
|
"Why
Most Health Foods Are A Waste Of Money...!" Our diets lack a vital food and even most alternative doctors don't know it
|
More Articles
... 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 ...
The Importance Of The 12 B Vitamin
... Cobalamin, the 12b vitamin is needed for the processes to convert the carbohydrates, fats and proteins from food into energy. 12 b also, more importantly, helps keep the red blood cells healthy and therefore prevent heart disease as well as keeping the immune system functioning at ...
... pregnant woman takes a course of a folic acid vitamin supplement during the first trimester of her pregnancy. Folic acid is the most commonly prescribed prenatal supplement for the months prior to becoming pregnant as well and it is essential for the health and growth of the baby, ...
... vitamins that they need to grow. For exactly the same reason, liquid vitamin supplements are perfect for anyone who is unwell and not able to eat properly. Despite the best efforts of most people it is likely that most are not getting sufficient vitamins and minerals from their diet ...
... c vitamin content. In fact, tropical fruits have the highest c vitamin amounts of all fruit. Hot peppers are amongst the richest sources of the c vitamin when it comes to vegetables. The hotter the pepper, the higher its c vitamin content is. Unfortunately, the c vitamin is water soluble ...