Vitamins are organic compounds that are found in small quantities in plant and animal food and for our life are irreplaceable. In most cases, the body can't produce them, (except vitamin D3). Therefore, we should regularly take them in the food we eat and if that's not enough, supply them in the form of supplements (food-based preferred).
The term vitamin derives from the Polish chemist K. Funk, the discoverer of thiamine - vitamin B1. At present we know about 20 vitamins essential for human nutrition, their functions are interlinked and mutually reinforcing, contributing to the maintenance of health.
Vitamins and their benefits can not be replaced by anything. They support metabolic processes, convert food into energy and accelerate biological functions. They are part of our blood, skin and bones, but also a process that rids the body of harmful substances, that get into the body from the polluted environment. They contain no calories and do not supply energy, but they are the most important component of enzymes, without which they could not run biochemical processes. Without enzymes and vitamins you can not imagine life. From this perspective, it can be no exaggeration to write that they are literally "life-giving".
Why to prefer food-based vitamin supplements? Many experts are of the opinion that it is preferable to have a more beneficial supplements that are extracts of the non-rich products, than substances created by chemical synthesis. This claim is valid and has several important reasons: One is the natural substance and can be adapted better to accept, process and use. Synthetic fabrics do not contain associated components that facilitate the absorption and full use. Natural resources include the body's own enzymes, natural binders, flavonoids and other substances that multiply their effect, have no side effects and are not stored in the body. There are only in nature (in fruits, vegetables, in herbal spices, etc.)..
In Rehnborg's scientific research center in the U.S., the differences in the effect of synthetic and plant ascorbic acid (vitamin C) were observed. What was revealed? It was found that its effect does not depend on origin, but on the fact that the fruit and vegetables contain these additional components, such as flavonoids, phenols, sterols, organic acids and other substances. It has been proven that they actually increase the effect of vitamin C. So chemically based product called vitamin C is not necessarilly real vitamin as long as it contains also the flavonoids - such as extract of acerola cherries and blackcurrants that make vitamin easily penetrates the cell membrane. In addition, flavonoids relieve swelling and bruising creation. In combination with vitamin C they harden capillaries and improve the flexibility of capillaries. By using only the very ascorbic acid - vitamin C, you will not achieve this effect.