Darren72 wrote:
In fact, rates of diabetes have been going up along with the average BMI, which tells us that for all the imperfections with the BMI, it's clearly picking up something real also.
This is a chicken-and-egg question that nobody knows the answer to. There's a huge amount of wild speculation as to the rising rates of diabetes, but since a great many people who have the disease are not fat by any standard, the constant linking of the two issues is misleading.
It's also impossible to make any accurate assessments about BMI over time, because BMI wasn't measured historically. Spotty evidence is just that -- spotty. Further, the standards of what constitutes "obesity" have been lowered. Looking at historic photos of what people looked like in past eras causes me to doubt some figures I have read very much. Sturm and drang on these issues as far back as the 1960s led to Kennedy's Council on Physical on Fitness, for all the good that did. Fat Americans are nothing new.
With all the talk of how dangerous it is to be fat and all of the awful health conditions supposedly related to fatness ("related to" because no one has ever proved direct cause and effect) Americans are living longer than ever. You could accurately say that, statistically, the rising BMI of the American population is related to its rising longevity.
To bring the topic back to what this thread is supposed to be about, I can't see there's any way that rising food prices can have any positive effect on national health.
Unlike the "food intellectuals" quoted in the article Kennyz linked to, I don't believe that rising prices are going to lead to more sustainable agriculture or a better American diet.
"Make a sacrifice on the cellphone or the third pair of Nike shoes," Alice Waters says? Sounds like "Let them eat cake." Who is she talking to? The well-heeled patrons of her restaurant?
The reality is that most people are, like Harvard, going to move away from expensive whole grains they can no longer afford, and like the welfare mother quoted in the food stamps story, turn toward cheap, starchy, filling foods. I see this as having a detrimental effect on the organics movement, as consumers put price first, and farmers are pressured to increase production.
I've tried to focus here on what's happening in the United States, as more relevant to most of us. If you look at what's happening internationally, you can see the immediate ill effects on people's health as they get caught up in rioting over the cost of food.
These are indeed depressing, scary subjects, but as SMT says, nonetheless real.