[mabase]

And most of those are actually misinformation. B12 being the only real one, but that isn't an issue because you can just supplement it. The B12 from meat comes from supplements anyways, so there is no difference. Just cutting out the middleman.

[sachdevap]

And B12 is found in soil bacteria, which before our filtered and cleaned food supply, would probably have usually found its way into our guts.

Source: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4765460/

[shafyy]

Exactly this. It's mind-blowing what kind of questions my well-educated ask about being a vegetarian. "Where do you get proteins from?" or "What about iron?". Really?!

The only real thing missing is B12 and of that the body needs so tiny amounts that every idiot can supplement it easily.

[noir_lord]

Not a vegan but B12 is easy to get (I have Crohns and B12 deficiency is fairly common), 1 energy drink is ~250% of RDA (They are stuffed with it).

[frankzinger]

Vitamin D, too, especially if you don't eat dairy. I managed to develop a deficiency which caused seriously low bone density.

The only reason I found out was because I got a compression fracture of one of the T vertebrae while snowboarding (just riding, too---no crash or anything like that). My point being that I felt otherwise completely normal so somebody with a sedentary lifestyle may not notice until it gets really bad.

Vitamin D facilitates calcium absorption; my calcium levels were normal. I think regular diets are more resistant to lower vitamin D levels because they contain more calcium on average.

[chillingeffect]

Or as dr. Gregor says, "cut out the middle moo." ;)