Why Raw-Foodies Get Such Poor Miles per Meal

Why Raw-Foodies Get Such Poor Miles per Meal

Richard Wrangham knows something about how human diets evolved. He’s a Harvard professor of anthropology, the curator of primate behavior biology at the Peabody Museum, director of a chimpanzee project in Uganda — and he’s willing to sink his teeth into his research. For example, Dr. Wrangham has found that “some of the fruits, seeds, and leaves that chimpanzees select taste so foul that I can barely swallow them. The tastes are strong and rich, excellent indicators of the presence of non-nutritional compounds, many of which are likely to be toxic to humans but presumably much less so to chimpanzees. Of the scores of chimpanzee foods I have tasted, I can imagine filling myself with only a very few species, such as wild raspberry, but alas, one rarely finds more than a handful of these delicious fruits at a time. Since cooking predictably destroys many toxins, we may have evolved a relatively sensitive palette.”

Dr. Wrangham’s taste test is part of a radical new theory in how anthropologists view evolution. His new book, Catching Fire: How Cooking Made Us Human (Basic Books), proposes that what fueled the dramatic increase in human brains is our ability to cook. Unlike other primates, who spend five hours a day chewing and even more hours digesting, humans can fuel themselves in minutes. Cooking was our most important fast-food revolution.

The energy advantages to cooking are enormous. For example, cooking eggs allows us to utilize 91 to 94 percent of the protein, as compared to only 51 to 65 percent for raw eggs. By the same token, the starch in cooked wheat and potatoes is about 95 percent digestible, while raw wheat starch is 71 percent digestible and raw potato only 51 percent. While cooking destroys some nutrients, the energy gains remain overwhelmingly positive. Wrangham reveals that all hunter-gather societies around the world cook their food and suggests that our teeth, jaws, and digestive systems have evolved such that a person in the wild without fire will typically starve.

Wrangham also suggests that the use of fire precipitated the division of labor and family bonds. Women gathered and cooked, while men hunted (or did nothing at all). A woman with a fire, despite spreading the smell of food for miles, was safe from other animals but needed a man to protect her from other men stealing her food.

Wrangham gently pokes at the current raw-food movements, and his theory raises interesting questions for all eaters. In a world of increasingly scarce resources, is it justifiable to choose a diet in which up to half the nutrients are flushed down the toilet? As Wrangham writes, “We fare poorly on raw diets, no cultures rely on them, and adaptations in our bodies explain why we cannot easily utilize raw food. Even vegetarians thrive on cooked diets. We are cooks more than carnivores. No wonder raw-foodism is a good way to lose weight.”

Meatless India: Cookbooks to Learn the Vegetarian Craft
For hundreds — if not thousands — of years, vegetarianism in India has been much more the norm than the exception. Consequently, native Indian cooking is authentically plant-based and not an attempt to prepare meatless dishes as if they included meat, as is so often the case with vegetarianism in the United States. Indians also are comfortable with the concept of food as holistic medicine, due to their familiarity with ayurveda, a system of traditional medicine native to India. Two high-quality new cookbooks offer uncomplicated recipes for home cooks to prepare the vibrant flavors, intoxicating aromas, and alluring textures of classic Indian food. Pure and Simple: Homemade Indian Vegetarian Cuisine offers over 100 recipes supplemented by step-by-step photographs by Vidhu Mittal, one of India’s best known culinarians. And if you’d like to limit your intake of dairy and eggs, also look for The Indian Vegan Kitchen: More Than 150 Quick and Healthy Homestyle Recipes by Madhu Gadia.

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