It is very important to consult before taking dietary supplements. Excessive use of food enriched with calorie substitutes may lead to an unintentional weight gain. High doses of vitamins and minerals can bring a potential for accumulation of these in the body. This is especially true for vitamins A and D, which are stored in the liver.
There are five categories of nutrients used in the manufacture of nutritional supplements:
* Natural: plant nutrients, mineral or animal after a short trial maintain their basic nutritional integrity as it was designed by nature.
Within these nutritional supplements include the fish liver oil, bee pollen, Yeast, Garlic, Kelp and all minerals.
* Source Natural products are undergoing or refined but nonetheless obtained from plant, mineral or animal.
These include vitamin A and vitamin D of fish liver oil, vitamin E, lecithin, digestive enzymes, protein powders and amino acids.
* Identical to natural nutrients manufactured in the laboratory that are identical in molecular structure and activity in the human body’s natural nutrients.
These nutrients are manufactured because the cost or difficulty of the same nutrient extraction from natural sources would do it too expensive or scarce. Within These include vitamin C and vitamin B complex.
* Strictly synthetic: nutrients manufactured in the laboratory that are somehow different from the natural nutrients.
Some nutrients, like vitamin E, may not be copied exactly, in any form, synthetic analogues are inexpensive and are used by many manufacturers.
* Nutrients obtained from yeast grown in rich media: minerals and some vitamins are added to pharmacologically manufactured environment where they cultivate yeast of Saccharomyces.
This will get vitamins and minerals similar in yeast.
There are arguments in favor of these categories
But we have to be clear is this.
Vitamin E is best absorbed in its natural form (D-alpha tocopherol) in the synthetic (L-alpha tocopherol).
Vitamin C in its chemical form, such as ascorbic acid, is cheaper but can irritate the stomach, we solve it by substituting more alkaline forms (ascorbate).
Beta-carotene is the best source of vitamin A and pro-vitamin that only become vitamin A in the amount needed to avoid overdoses.
Essential fatty acids derived from vegetable oils (borage, wheat germ …) encapsulated expensive the product, but protect it from oxidation while maintaining their biological characteristics intact.
Source: www.alimentacion-sana.com.ar/Portal%20nuevo/actualizaciones/malanutri.htm
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