more from the book FOOD RULES – by Michael Pollan
For good dental health, you need good overall health – start with what you eat, or don’t eat…
There are basically two important things you need to know about the links between diet and health, two facts that are not in dispute. All the contending parties in the nutrition wars agree on them. And, even more important for our purposes, these facts are sturdy enough that we can build a sensible diet upon them. Here they are:
Fact 1. Populations that eat a so-called Western diet – generally defined as a diet consisting of lots of processed foods and meat, lots of added fat and sugar, lots of refined grains, lots of everything except vegetables, fruits, and whole grains – invariably suffer from high rates of the so-called Western diseases: obesity, type 2 diabetes, cardiovascular disease, and cancer. Virtually all of the obesity and type 2 diabetes, 80 percent of the cardiovascular disease, and more than a third of all cancers can be linked to this diet. Four of the top ten killers in America are chronic diseases linked to this diet. The arguments in nutritional science are not about this well-established link; rather, they are all about identifying the culprit nutrient in the Western diet that might be responsible for chronic diseases. Is it the saturated fat or the refined carbohydrates or the lack of fiber or the trans fats or omega-6 fatty acids – or what? The point is that, as eaters (if not as scientists), we know all we need to know to act: This diet, for whatever reason, is the problem.
Fact 2. Populations eating a remarkably wide range of traditional diets generally don’t suffer from these chronic diseases. These diets run the gamut from ones very high in fat (the Inuit in Greenland subsist largely on seal blubber) to ones high in carbohydrate (Central American Indians subsist largely on maize and beans) to ones very high in protein (Masai tribesmen in Africa subsist chiefly on cattle blood, meat, and milk), to cite three rather extreme examples. But much the same holds true for more mixed traditional diets. What this suggests is that there is no single ideal human diet but that the human omnivore is exquisitely adapted to a wide range of different foods and a variety of different diets. Except, that is, for one: the relatively new (in evolutionary terms) Western diet that most of us now are eating. What an extraordinary achievement for a civilization: to have developed the one diet that reliably makes its people sick! (While it is true that we generally live longer than people used to, or than people in some traditional cultures do, most of our added years owe to gains in infant mortality and child health, not diet.)
There is actually a third, very hopeful fact that flows from these two: People who get off the Western diet see dramatic improvements in their health. We have good research to suggest that the effects of the Western diet can be rolled back, and relatively quickly. In one analysis, a typical American population that departed even modestly from the Western diet (and lifestyle) could reduce its chances of getting coronary heart disease by 80 percent, its chances of type 2 diabetes by 90 percent, and its chances of colon cancer by 70 percent.