Unexpected Side Effects of Flavonoid Supplementation: Do You have to Re-Evaluate the Use of EGCG, Grape Seed Extract & Co?
It is pretty exciting to see how scientists find new beneficial constituents in common foods on a daily basis. A group of these phytoprotectants is called "flavonoids". Respective extracts from grapes, green tea, etc. have been shown to exhibit various health benefits and supplement companies make a fortune selling them to health-conscious costumers. The question however remains: Did nature really intend us to consume these trace nutrients in such significant amounts ? Table 1: Potential beneficial and adverse effect of flavonoid supplements. ( Egert. 2011 ) Scientists from the Department of Nutrition and Food Science of the University in Bonn, Germany ( Egert. 2011 ), have now taken a closer look at possible side-effects of a selection of these phytoprotectants. Among the possible interaction and health concerns the scientists have found were Flavonoid - trace element interactions - reduced the uptake of iron (and possible other trace elements) Flavonoid - vitamin i...