Should I keep my insights to myself?

[quintessentone]

It's you that hasn't researched I don't eat cereal and still get my b12 from natural sources

You are basing your knowledge only on your own health situation while not encompassing others' health issues, age, etc.

My doctor advised me to start eating red meat, and in addition to that I would have to take B12 supplements for the rest of my life. I didn't want to give up being a vegan, I had to give up being a vegan for my particular health issues.

So far you are generalizing.