What is the significance of multiple use of dietary supplements? Data from a German consumer survey
2016
Willers, Janina | Heinemann, Michaela | Bitterlich, Norman | Hahn, Andreas
Today the use of dietary supplements in the form of vitamin and mineral preparations is partially widespread. Apart from their importance in relation to health, wellbeing and prevention the risk assessment of dietary supplements and a safe total nutrient intake play a crucial role. The supply of various products with same ingredients and the associated cumulative intakes of substances can be seen as a potential problem. Data on this were not yet available. The aim of this present analysis was to capture and further characterize the multiple use of dietary supplements in adult men and women. The data for this study was obtained from a representative survey in cooperation with the Society for Consumer, market and sales research (GfK) in Germany with 1.070 dietary supplement users. In 94 % of the cases, the supply of a specific nutrient came from a single preparation. With an increasing number of dietary supplements used, the mean vitamin and mineral intake increased as expected, at the same time, the number of supplement users dropped significantly. An exceedance of the Tolerable Upper Intake Level (UL) was of relevance mainly in view of magnesium. 68 % of the magnesium users exceeded the UL with the intake of a single product. Overall, the data obtained here indicated that vitamins and minerals were not taken multiple via different preparations. In this collective, multiple exposures via different dietary supplements harbored no exposed risk.
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