The pro-produce advice had relied on interviewing people about what they remembered eating in the past, and the newer, more rigorous studies used "'prospective' protocols, in which the health of large populations was followed in real time." And:
With even the most rigorous studies, it is hard to adjust for what epidemiologists call confounding factors: Assiduous eaters of fruits and vegetables probably weigh less, exercise more often and are vigilant about their health in other ways...All this badgering about eating lots of fruits and vegetables, all the cabbage and broccoli we've been pressured to buy and wash and cut up and cook and choke down! There was never good evidence for it. Obviously, it seemed good to people because it fit what we already thought was supposed to be good. But why?!
Let me show you this passage I've remembered for a long time, from James Joyce's "Ulysses" (scroll to line 7825):
Only weggebobbles and fruit.... They say it's healthier. Windandwatery though. Tried it. Keep you on the run all day. Bad as a bloater. Dreams all night.
ADDED: A poll:
AND: What is the environmental cost to producing all these vegetables and trucking and flying them about? What of all the money families spend on vegetables, because they've heard the propaganda, money that could be spent on more satisfying, concentrated protein? What of all the torment we've caused schoolkids giving them lunches they hate that leave them hungry and running for the vending machines for junk food? Where is the science?