Keep in mind however, that your great-grandparents prolly did eat meat, but like, once a month. I recall stories from my nan where they only ate chicken on the last Sunday of the month, and as a child this completely dumb-founded me as I was more or less eating it all-the-time. You really need to look at the data regarding statements like that, what did all the great-grand parents die from, and does their mortality tie in with their choice of eating? Anywho, today's coffee break viewing; - Why would you listen to anyone who proclaims that they're vegan whilst they're boasting about loving to eat fish? ... Did you correct her and say that she's actually not vegan? And that's not to say that a predominantly plant-based diet can't consist of meat/dairy here or there. Or that vegans don't accidentally eat meat/milk from time to time. But for someone to just blatantly say they enjoy eating non-vegan food whilst proclaiming they're a vegan is an idiot.