A study by two Emory University doctors concludes that it might be good for our health if we took some dietary lessons from our Stone Age ancestors. The paleolithic diet included not only a lot of fruits and vegetables, as might be expected, but a high percentage of meat. The difference is that theirs was lean meat, coming from rangy beasts that ran loose and were hunted by man, while ours comes from animals that have been fatted in captivity.

"The diet of our remote ancestors may be a reference standard for modern human nutrition and a model for defense against certain 'diseases of civilization,'lvin Konner write in the study in the New England Journal of Medicine. It may be that, and it is almost certainly something more: a reference standard for a best-selling book, the surest sure bet imaginable outside of a volume of financial advice, self-improvement hints and one-liners by Lee Iacocca as told to Garfield the cat. Consider the top-selling books in their categories last year, as reported by The New York Times: "Eat to Win," "Megatrends," "The One Minute Manager" and Mr. Iacocca's autobiography. If you don't see "The Cave Man Diet" (as it will inevitably be entitled) on these charts, then you don't have much of a feel for the Stone Age forces at work in the world of books.

So count on this: Some day in the near future you'll look out at daybreak and see people all up and down your street come loping out of their homes wearing designer skins and wielding L. L. Bean stoneaxes, while every dog, cat and squirrel in the neighborhood runs for cover, and those people who are too old to hunt and gather hurry out to post "No Foraging" signs on their shrubs in the hope that cave men sometimes readsomething other than diet books.