Illiterate science journalism at Morning News confuses nature and nurture

In a health story today at The Dallas Morning News, (don’t forget the initial capital!) freelancer (I’m sorry, “special contributor”) Elsa K. Simcik made a whopper of a mistake on nature vs. nurture. She says:

Reed also didn't realize that being African-American automatically put her at high risk for developing colon cancer. According to the American Cancer Society Web site, “African-Americans have the highest colorectal cancer incidence and mortality rates of all racial groups in the United States.”

Yes, but there is NO definite evidence linking anything genetic in African-Americans to the higher colon cancer rates, therefore, Martha Reed was NOT “automatically” anything.

There are a variety of environmental risk factors, to be sure. Lower screening rates and detection often being in more advanced states of cancer both contribute to the higher fatality rate. Traditional black foods, higher in saturated fats and lower in fiber, are certainly likely contributory to higher rates of occurrence.

BUT … those are all “nature” factors, not “nurture” ones.

As for claims of genetic-driven difference, all of them are weak at this stage, and even if they do pan out with more research, nonetheless, their effects will be seen as much smaller than the environmentally-caused ones.

I know the Snooze got rid of its fantastic science editor, Tom Siegfried, in what seems like an eon ago. But, that’s not an excuse for not having at least a staff writer with some science writing doing this story.

Science journalists get depression wrong by dissing SSRIs

A set of psychology researchers rightly say that media use of “chemical imbalance” to describe depression is scientifically inaccurate.

However, the researchers then have to follow up on the overhyped recent Public Library of Science report and claim, as does the author of the World Science story, that modern anti-depressants really don’t work:

The drugs, known as Selective Serotonin Reuptake Inhibitors or SSRIs, recently turned out to be largely ineffective.

Boy, that’s wrong in several ways. First, the PLoS story only claimed that antidepressants were relatively ineffective in mild or moderate depression, not all depressions.

Second, the PLoS authors overstated their case. From the study:

On average, the SSRIs improved the HRSD score of patients by 1.8 points more than the placebo, whereas NICE has defined a significant clinical benefit for antidepressants as a drug–placebo difference in the improvement of the HRSD score of 3 points.

That may not be great effectiveness, but it’s nowhere near “largely ineffective.” And, since milder depressions are usually likely to ring up lower diagnostic scores, the numeric steps of improvement, by HRSD scores, that provide relief, will be lesser anyway.

So, perhaps science journalists aren’t so great about writing about depression, either.