Food is also about pleasure, about community, about family and spirituality, about our relationship to the natural world, and about expressing our identity. As long as humans have been taking meals together, eating has been as much about culture as it has been about biology.

The larger meaning here is that mainstream journalists simply cannot talk about things that the two parties agree on; this is the black hole of American politics.

The soybean itself is a notably inauspicious staple food; it contains a whole assortment of "antinutrients" - compounds that actually block the body's absorption of vitamins and minerals, interfere with the hormonal system, and prevent the body from breaking down the proteins of the soy itself.

People don't eat nutrients, they eat foods, and foods can behave very differently than the nutrients they contain.

There's something magical that happens when people eat from the same pot. The family meal is really the nursery of democracy. It's where we learn to share; it's where we learn to argue without offending. It's just too critical to let go, as we've been so blithely doing.

Wrangham cites several studies indicating that in fact humans don't do well on raw food: they can't maintain their body weight, and half of the women on a raw-food regimen stop menstruating. Devotees of raw food rely heavily on juicers and blenders, because otherwise they would have to spend as much time chewing as the chimps do. It is difficult, if not impossible, to extract sufficient energy from unprocessed plant matter to power a body with such a big, hungry brain.

It's been a mystery to me and a disappointment why conversation about health care reform hasn't turned more attention to the subject of food.