I do not know this study, but sentences like "paternal grandfather's food supply was only linked to the mortality RR of grandsons and not granddaughters" in a s

I do not know this study, but sentences like "paternal grandfather's food supply was only linked to the mortality RR of grandsons and not granddaughters" in a study with N=303 make me pretty skeptical about p-hacking. There's a lot of academic interest in such things, precisely because they go against the grain of everything that's well understood. Finding one, and proving that it's really certainly not zero, could make your name.