Oh, sure, I know medical advice changes -- the point of that anecdote is not the recommendation per se, but the fact that I didn't turn out deformed as a result of my mum eating liver while pregnant with me.

Of course, whether you choose to view the long list of pregnancy-forbidden foods as new and important medical advances or pointless and poorly evidenced mithering by the doctors of today is a different question

That's why I want to see actual evidence rather than just a list! A list of advice without any indication of the evidence is no better than just asking my Auntie Maureen[*]. (And evidence for one of the things on the list does not automatically make the rest of the list equally sound.)

[*] OK, it is marginally better because I don't actually have an Auntie Maureen.