Though some vitamin B12 is absorbed in the mouth, it needs the intrinsic factor thats made in the stomach to be effective
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Raw broccoli is a better source of sulforaphane.[ref] Broccoli seeds are relatively easy to sprout and readily available online
Because the kidneys are highly metabolic organs, they produce a significant amount of these unstable molecules during their normal daily tasks
However, there is no strong evidence in this area, recommending further investigations to clarify the possible adverse effects of riboflavin intake in high amounts