https://www.eurekalert.org/pub_releases/2020-11/bfif-vvb111020.php
News Release 10-Nov-2020
BfR Federal Institute for Risk Assessment
There was no significant difference with regard to vitamin B12, which was present in approximately the same amount in the blood of both groups. Since vitamin B12 is taken up almost exclusively by animal food, the supply of participants following a vegan diet could be due to the intake via dietary supplements. "This study makes it possible to compare a vegan diet with a mixed diet with regard to a variety vitamins and trace elements," says BfR President Professor Dr. Dr. Andreas Hensel. "Both diets investigated revealed a lack of iodine. However, the shortage is clearly more distinct in the vegan variant."
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The study results were particularly noteworthy with regard to the trace element iodine. Iodine excretion measured in urine samples provides information on how well the body is supplied with the trace element. The majority of the participants had a deficiency. The deficiency was significantly more pronounced among vegans - in one third of them, the level was below 20 micrograms per litre (μg/L), the limit defined by the World Health Organization (WHO); anything below this represents a serious shortage. A vegan diet has, however, also shown health benefits, such as a higher fibre intake and lower cholesterol levels. For both diets, about 10% of participants had an iron deficiency.
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