I remember reading a study a while back about the B12 found in unfiltered river water being sufficient for maintaining healthy levels in humans. It would be int

I remember reading a study a while back about the B12 found in unfiltered river water being sufficient for maintaining healthy levels in humans. It would be interesting to see a human study on this - albeit not useful for most people, as river water in most places if very much contaminated. Also for something more anecdotal, I worked as a labourer on a couple of farms for a while (which had a lot to do with why I went vegan...), and the animals had to be supplemented to the teeth to get sufficient vitamins and minerals. My guess is this was because their feed was all from processed grains and legumes, and their water came from the filtrated mains system.