“This involves cutting out all animal products, including meat, eggs and milk. “
which means cutting out all vitamin B-12, which cannot be obtained from plant products.
however, the liver of a healthy adult who has eaten animal products their whole lives will contain several years supply of B-12; thus it takes several years before a vegan runs out of B-12, but when they do, they’ll sicken and die.
that’s why so many vegans seem well for many years, but then slowly start to feel ill, and start eating animal products again, at which point they “mysteriously” start to feel healthy again.