Yes, you need minute amounts, but you still need it. Deficiency can cause irreversible nervous system damage. I have a friend that went on a vegetarian diet and didn't take supplements. Shortly afterwards, she started constantly feeling dizzy, weak, and lethargic. I'm fairly certain it was because of vitamin deficiency.
The nutrition education levels of doctors you provided is indeed shocking. Could you give the source for that data? I wish they had the statistics on men who ate meat and eggs, but no dairy. I'm kind of tired of the association between cutting dairy and cutting meat out.
Let me say that I do believe Americans consume way too much meat.
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