Nutrient Interactions

Once inside the gastrointestinal tract (stomach & beyond) the absorption of nutrients can be affected by different factors. In general, the body absorbs nutrients best from foods in which they are diluted in and when dispersed among other ingredients that may progress their absorption. If taken in pure, concentrated form, like high dose supplements, nutrients are likely to interfere with one another or with the nutrients contained with foods taken at the same time. Some of these are as follows: Zinc hinders copper and calcium absorption Iron hinders zinc absorption Calcium hinders magnesium and iron absorption Magnesium hinders calcium and iron absorption The precursor for beta-carotene interferes with vitamin E metabolism Vitamin E interferes with vitamin K Vitamin D has been shown to improve calcium absorption

As you can see, this list shows the trouble with supplementation or eating many foods with fortification of vitamins and minerals. It is far more efficient and healthy for normal individuals to consume vitamins and minerals from natural sources in fruits, vegetables, meat and fish where they are found in the correct proportions, conveniently packages and ready to be absorbed without negative interactions. The `5 portions of vegetables or fruit a day` idea is perhaps a smart and simple method to follow.

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