What every human being should do is eat a vegetarian diet based on whole foods. Period. That's it. Animal protein is bad for you. Dairy is bad for you. Forget the ads: Milk and eggs are bad for you. Skim milk is no better, because it contains proportionately more animal protein. What you're trying to avoid is dietary cholesterol. You also need to cut way down on salt and sugar, and run like hell from high fructose corn syrup.

"Forks Over Knives" is a documentary in which Lee Fulkerson enacts a mirror image of the journey taken by Morgan Spurlock in "Supersize Me." Instead of eating only at McDonald's for a month and nearly killing himself, he eats a plant-based whole food diet for six months, gets off all of his cholesterol and blood pressure medications, drops a lot of weight, sleeps better and has more energy.

His film follows three other sick people: one with breast cancer, one given less than a year to live because of heart problems, one with murderously high cholesterol. All are well again after the vegetarian diet. The movie opens with a warning that no one should take such steps without consulting a physician, and I quite agree; I would not have depended on nutrition to cure my cancer, but I'm convinced that I would always have been healthier if I'd eaten correctly.

The film hammers us with information. It centers on the work of famed nutritionists Dr. T. Colin Campbell of Cornell and Dr. Caldwell Esselstyn of the Cleveland Clinic. Campbell conducted the awesome China-Oxford-Cor­­nell study, which fol­lowed millions of Chinese over decades and found that increases in their incidence of cancer and heart disease directly paralleled their adoption of a Western diet.

Short term studies show the same thing: When Nazis commandeered all the food animals in Norway and rationing forced Brits away from meat, disease rates plummeted. After the war, they moved up again. In the traditional Japanese diet, breast and prostate cancers are all but unknown.

These facts have long been established, not only by Campbell and Esselstyn but also by Dean Ornish, John McDougall and the researchers at Pritikin. There is a Catch-22. The federal government subsidizes such crops as corn, which is used for lethal corn syrup and to feed animals which we then eat. It puts bad foods in school lunches. The lobbyists of agribusiness control national farm policy. The government spends millions to subsidize an unhealthy diet. We are raising the first generation of children who will not live as long as their parents.