Nutrient form

Another way to ensure the manufacturer, that the active ingredients is easily absorbed by the body enzymes if in the upper intestine break large molecules into smaller molecules, which are easily released by the intestinal wall into the bloodstream. Best vitamin preparations contain enzymes such as bromelain, amylase, protease and papain, to increase the bioavailability of other ingredients and to prevent indigestion.

Most vitamin supplements contain synthetic or "man-made" forms of nutrients. For example, most daily multivitamins beta-carotene, which is in the body to vitamin A. Vitamin A contain important for good eyesight, a healthy immune system, healthy bones, teeth and skin is transformed. Supplement manufacturers know that synthetic vitamin A can be toxic to humans in high doses. Beta-carotene, on the other hand, assume that non-toxic.

Synthetic beta-carotene may not have the same health benefits as natural beta-carotene and can even be dangerous for certain people. Scientists have observed to consume a lower incidence rates of lung cancer in people who have large amounts of fruits and vegetables contain beta-carotene.
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