Philip Alcabes discusses myths of health, disease and risk.

Science Learning

My blog pal Joanne, the estimable Science Goddess, is running a very smart science reading contest (along with her colleague Jeff at Scienticity) for children and teens.

Actually, there are two contests, divided by age:

Click here for Joanne’s promotional video and here for a list of authors supporting the project.

Grown-ups make such a mess when they can’t, or won’t, understand straightforward chemistry and physics — worsening the Gulf of Mexico situation, for instance, by failing to learn how to do the cleanup while keeping workers safe, as ProPublica has been reporting lately and The Pump Handle follows assiduously.  So  it’s impossible to overstate the importance of kids’ learning to understand how to read science.

In regard to reading science, The American Scholar just published a thought-provoking essay by nobel-laureate physicist Robert B. Laughlin.  The article ponders geologic time from a scientist’s standpoint — and makes a crucial distinction between what we really cannot know about the earth’s future and what the rising costs (financial, environmental, human) of energy make us fear.

Laughlin writes

The geologic record as we know it thus suggests that climate is a profoundly grander thing than energy. Energy procurement is a matter of engineering and keeping the lights on under circumstances that are likely to get more difficult as time progresses. Climate change, by contrast, is a matter of geologic time, something that the earth routinely does on its own without asking anyone’s permission or explaining itself.

I suppose Laughlin will take a lot of flak from people who are sure that “the science” allows them to predict that the earth will be irrevocably ruined, and human civilization irretrievably altered (if not demolished), by manmade climate change. But it’s refreshing when a scientist can acknowledge that humans do bad things to the environment but still refuse to join the sky-is-falling brigade.

There are lots of reasons to curtail the damage that humans do to the physical environment and to preserve biodiversity.  But having a crystal-clear view of just what will happen if the carbon dioxide concentration stays above 350 ppm — islands disappearing and so forth — shouldn’t be one of them.

Science is good at explaining the world, but about the future it is best for telling us what we don’t know (and what questions to ask).

A little more awareness of what we don’t know, and a lot more humility in the face of ignorance, might have gone a long way toward protecting the Gulf of Mexico.  Too late for that.

So Brava! to Joanne, Bravo! to Jeff, for furthering the project of teaching the next generation to use science better.

Media Culture: Beyond Fat and Salt?

Over at Media, Culture & Health, Steven Gorelick notes that a story on salt and the food industry, which appeared on page A1 of the print NY Times on Sunday, would not have made the front page in the past.

What has changed?  How does the story of wrangling over the sodium content of American food merit space in the main news sections of the most influential media — even the front pages of the NY Times or LA Times?

1.  One answer is that health occupies much of the American conversation today.  A visitor from another planet watching our TV news shows or reading the main newspapers would have to be forgiven for thinking that Americans are dying from a multitude of irrepressible disease threats.  We can’t seem to stop talking about how to improve our health.

(In fact, as Michael Haines notes at the Economic History Association website, U.S. life expectancy almost doubled between 1850 and 1960, from 39.5 years to 70.7 years; since then it has increased slowly, and is now estimated to be about 78.2 years.  In other words, health wasn’t a matter of news much during the time when longevity was improving dramatically, in the late 19th century and first half of the 20th.  By the time health became a cultural preoccupation, the majority of Americans were living well past middle age.)

2.  Another answer, perhaps more important is that when we talk about health today we mean personal responsibility.

When I began studying epidemiology, in the late 1970s, public health essentially meant disease control.  Yes, lip service was paid to so-called health promotion — much was made of the World Health Organization’s definition of health, promulgated in 1946:

Health is a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity.

But no metric for complete well-being was widely recognized.  And the usual epidemiologic measures of incidence and mortality rates, life expectancy, and so forth seemed to work just fine as ways of understanding why some groups of people lived longer and more capable lives, while others lived miserably and died young.

Sometime since then, the health sector, including public health, has turned to individual responsibility as the key to well-being.

If each of us is responsible for his or her own health, then it’s our own fault if we get sick.  Naturally, advice abounds:  buckle up, use a condom, eat less fat, know your cholesterol level, wash your hands, use mosquito repellent containing DEET, wear sunblock, eat fresh fruit and vegetables every day, lower your stress.

The advice adds up to this:  know your limits.  Federally sponsored research tells us that self-control is ontagious.

The personal-responsibility view of health says, “control your appetites.”

3.  But let’s think about another change:  more people are concerned about the American diet.  As noted last week, the food movement has given us ways to think about eating that go beyond the tiresome story of obesity and hypertension — Beyond Fat and Salt, you could say.

Of course, the main media outlets still tell the food story in Fat-and-Salt language, as the news articles in the NY Times, LA Times, and others show.  It’s the food industry vs. the foodies, or the food industry vs. public health, or the food industry and public health vs. appetites — anyway, somebody against somebody in the name of health.

The media aren’t quite past obesity and hypertension yet.  But as the culture moves beyond obsessive self-inspection in the name of health, no doubt media will, too.