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Question
Posted by: how are vitamins sold in health shops ma | 2007/05/09

how are vitamins sold in health shops ma

I know that vitamins and minerals occur naturally in foods - but how are the vitamins etc. that are sold in health shops made?
Are they man-made chemical replicas of the real thing?
If they are supposed to be so good for us, why do we get so many side-effects from them , that we don't get from those foods containing them?

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Our expert says:
Expert ImageDietDoc

Dear Reader
The manufacture of vitamins sold in health shops is a complex process and many different methods are used: for example extraction, purification and concentration of naturally occuring vitamins or nutrients; use of microorganisms to produce or concentrate vitamins; chemical manufacture of synthetic vitamins. Firstly there is no guarantee that any side-effects you may experience from taking vitamin supplements are being caused by the actual vitamins. Most tablets and capsules contain various additives such as stabilisers, colourantes, flavourants, preservatives, etc, and I suspect that most of the reactions to the vitamins are caused by these additives. Then there is the danger of excessive intakes of the so-called fat-soluble vitamins (A, D, E, K) which are stored in the body and can cause hypervitaminosis. So if you experience side-effects from a specific vitamin supplement, check if it does not contain excess vitamins A and D in particular, and also try to find out what additives it contains as you may be allergic to the latter.
Best regards
DietDoc

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