For me for example its “Eat me - a natural and unnatural history of cannibalism” by Bill Schutt. Its an amazing book that covers cannibalism in animals and then the history of it in humans (cultural, survival & medicinal cannibalism).
I got a lot of “oh why would someone read something like that?” And “that not something fun to read about!” From relatives but my friends enjoyed the stuff that I could tell them about cannibalism!
Mary Roach is kind of the queen of this, but Stiff: The Curious Lives of Human Cadavers is my favourite of hers, because even I didn’t expect how much I would enjoy it – I mostly just bought it because a friend got me curious, but I was riveted.
Ah I missed your comment and mentioned Mary Roach as well. I also loved Stiff.
Yes! This is the one I came to say. Bonk is also good.