Natural and synthetic vitamins have the same chemical structure, but they have different isomers, which refers to the three-dimensional structure reflected in a mirror. Let's take a look at tocopherol, which is called vitamin E. The form that exists in nature, such as nuts, is d-alpha074 tocopherol. On the other hand, artificially synthesized tocopherols are D/L-alpha tocopherols, which are half D and half L. The same goes for beta-carotene, a precursor to vitamin A.
Natural is a mixture of trans and sys, and synthesis is all made up of trans forms. In particular, long-term consumption of synthetic tocopherols has been reported to increase the risk of heart disease, so when choosing a tocopherol formulation, consider the name of the ingredient on the product packaging.
The same goes for minerals. Minerals are present in the body, mainly in the form of organic salts. Minerals in the form of inorganic salts are inexpensive to manufacture, but they are not natural, as they are insoluble in water and cannot be absorbed. Within the stomach, both absorption and bioavailability are significantly reduced. It's just that mineral preparations in the form of organic salts are close to natural. A prime example is calcium. Calcium preparations are dominated by inorganic salts such as calcium carbonate, but for good health, organic salts such as calcium citrate should be chosen
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