Well, it doesn't, and explaining what it does mean is complicated only because our entire society has adopted a complicated approach to what was once a much simpler matter (you know, back when obesity was not a widespread problem). I doubt if anyone here can explain Pollan's ideas more concisely than does Pollan himself, and if you haven't time to read what he's written, I don't know who is going to find time to hand feed his points to you one by one. I guess you could try checking out some of the YouTube videos of his talks.
Last night I thought of the perfect way to explain it. It's so obvious that I missed it. Pollan has done something very, very clever. He's taken old and obvious advice, relabeled it, and sold it as something revolutionary.
"Eat real food." It's a great marketing gimmick. Not only does it make one feel good about the 'real food' they are eating, one can feel that they are better than the peasants eating fake food. Like 'organic', it really doesn't say anything about the food, but raises the alarm on other food, oh, I'm sorry, food like substances.
If he had just said, as people have been saying for fifty or more years, "don't eat junk food," people would have just said, "well no **** Sherlock, guess I don't need to read this book."
Junk food. It's simple, straightforward and already part of the vernacular.
If, by "this", you are referring to Pollan's distinction between "food" (Pollan himself doesn't place great emphasis on calling it "real food", by the way) and what he calls "edible food-like substances", then you might consider his advice: "Don't eat anything that doesn't rot" (the Twinkie is perhaps the most poignant example), or: "Stay out of the middle of the grocery store" -- because the stuff your grandparents would recognize as food (vegetables, meat, dairy, bread) is around the perimeter, while the middle of the store is where the most processed, over-packaged, over-priced, stuff is found; the stuff that is sold on its perceived value (value that is created through marketing, much of it based on claims of "nutritional value"); the stuff for people who are convinced they can't cook, or who just don't have time (despite the plethora of time-saving devices like automatic dishwashers and can openers, we somehow still have less time available for cooking than did our agrarian ancestors who began their twelve-hour workdays by rising before dawn to milk the cows).
We're obsessed with omega-3 fatty acids and fructose/sucrose/glucose and, what, fiber and gluten and carbs and a hundred other things our (healthy, non-obese) grandparents never heard of. We discuss food choices in the context of studies (some of the posts to this thread being good examples). It's all quite scientific, doncha know -- yet we keep getting fatter and fatter in spite of it all. We've been conditioned to think in terms of "nutrients" by advertising and by misguided (though some of them well-intentioned) government policies. Our grandparents didn't study food, they just ate it.
I'm sorry, but it seems ironic for you to be accusing others of being the result of some marketing based corruption of science when you have bought into the lies and hype surrounding some foods.
Twinkies have a shelf life of twenty-five days. They rot. All food rots. Why do some things last so much longer? For one they are produced in factories that have to deal with very, very tight health and cleaning standards. Second, that 'over packaging' is what keeps a lot of foods safe and unrotten.
The profit margins for a lot of foods aren't huge. How you believe that the food is 'over priced' is beyond me.
In the 'good old days' they didn't live long enough to die from obesity and obesity doesn't effect longevity. Obese people live just as long as anyone else. In the good old days, they died of things like e-coli and botulism from things like 'real food'. Now I'm not saying that 'real food' isn't fairly safe nowadays, but it's because of science and studies that figured out these things.
Our grandparents most certainly studied food. Don't be crazy. Humans have always 'studied' food, even if it was just, "don't eat the red berries, they'll make your throat swell." Just because we are getting more and more sophisticated (thankfully) about it, doesn't mean anything bad at all. Learning more and more is good, especially about food, our bodies, and how they work. If that science says that corn and HFCS are bad, we've learned something and can change. If it says, "canning must be done in this way and 'real food' has to be stored that way so people don't
die" that's a damn good thing too.
Our 'non-obese' (many of which were obese by the way) grandparents got that way by working and walking a lot more, and not having enough to eat sometimes. If the choice of problems for a society are obesity or starvation, let me think about that one for a few milliseconds.
Be skeptical of marketing, that is good. Be skeptical of
all marketing though. Don't fall into the 'golden age' bs that is more and more rampant.