Tag Archives: cancer

Cell phones and cancer (ii)

I had quite the large backlog of posts due to a big end-of-semester deadline, and I was saving all the cell phone stories for last. Unfortunately I won’t be able to do them justice, but will just have to post and quickly summarize. Sad, right? Especially since that’s the same treatment I gave to the NYT magazine piece the other month (discussed briefly here).

Ok, let’s start with the front page of the Boston Globe on June 1. Below the fold, there was the headline “Cellphones are added to list of potential risks for cancer.” A little unclear? The quote that appears above the headline is even better: “The evidence…is strong enough to support a conclusion…that there could be some risk.” Here’s the globe story. And here’s a shot of the front page.

Next we have this AP piece that I read via the New York Times.

Classifying agents as “possibly carcinogenic” doesn’t mean they automatically cause cancer and some experts said the ruling shouldn’t change people’s cellphone habits.

“Anything is a possible carcinogen,” said Donald Berry, a professor of biostatistics at the M.D. Anderson Cancer Center at the University of Texas. He was not involved in the WHO cancer group’s assessment. “This is not something I worry about and it will not in any way change how I use my cellphone,” he said — speaking from his cellphone.

Only some experts? What the heck are people supposed to believe?

Then the NYT editorializes on the topic on June 2. They actually do an okay job, but why did they participate in fanning the hysteria in the first place? I also like the opening paragraph as a case of cycling:

Cellphone users have every right to be befuddled. Just last year, a major study in 13 countries found no clear evidence that exposure to the radiation from cellphones causes brain cancer. Yet, this week, a panel convened by the same agency, the International Agency for Research on Cancer, declared that the radiation is “possibly carcinogenic” to humans. It made this pronouncement by press release before publishing a monograph that will lay out the basis for its concerns — and will give independent scientists their first chance to evaluate this new judgment.

Next up is Globe technology columnist Hiawatha Bray, pointing readers in a June 2 piece to some ways to avoid the threat of brain tumors via cell phone use. Like, buy a headset!

Last but not least, Times “digital and pop culture” blogger Virginia Heffernan weighs in in a June 5 posting. There’s a nice piece of advice in the post, but mostly it ignores its own advice. I’m referring to this:

Making good decisions about new data that surfaces in a rhetorical hurricane — like the data about cellphones and other technology — requires sharp critical skills. Like reading a hard poem or novel, “reading” data and commentary requires a free mind, a measure of originality and decent aesthetic judgment. Last month, John Horgan published an elegant post on Scientific American’s Web site raising questions about the efficacy of a high-fat diet in promoting weight loss. Instead of pulling magic new facts out of his data hat, in the set-piece legerdemain made famous in TED Talks and bestsellers about the brain, Mr. Horgan simply stared hard at the high-fat diet, as if at a cultural object — a poem or sofa. And then he let himself, in a brazen departure from scientific method, retch.

Ok, so it’s not all good advice. But the point about the need for sharp critical skills in a world where “new data” often “surfaces in a rhetorical hurricane” is well taken. I just think that journalists shouldn’t burden their readers with having to get a PhD in economics to make sense of the rhetorical hurricanes they throw out there. Instead, journalists should try harder to boil things down. In the end the principles of inference don’t seem that complicated, and conveying information about how a study is conducted should not be hard, since it just involves reading the research and translating it to a lay audience. (And how many sentences in this storm of coverage on the cell phone study did you see devoted to the research design?) What does seem hard is generating all the fluff.

Coffee and cancer

When I woke up the other day to find 1000+ articles in my Washington Post folder in Google Reader, I gave up. Since the redesign of their site, my daily count tripled, from about 100 to 3-400. And then this–I just can’t read that much in one sitting. I don’t know what they’re thinking over there. I guess the issue is that RSS never really caught on beyond the tiny niche audience I’m a a part of…

Anyway, it’s probably fine since the Globe occasionally reprints content from them. Like this article from May 19:

Lorelei Mucci of the Harvard School of Public Health and colleagues analyzed data collected from 47,911 US men who participated in a large, ongoing examination of a variety of health issues for men. As part of the study, the men reported their coffee consumption every four years between 1986 and 2008. During that period, 5,035 cases of prostate cancer were reported among the men, including 642 fatal cases.

I give the study a C, but the coverage an F. There is not a single sentence discussing some potential problems with drawing conclusions from the study. Here’s one: coffee intake was not randomized among subjects. As a result, it’s impossible to know if the association between coffee drinking and lower risk of prostate cancer is a result of coffee drinking, or just a spurious correlation resulting from factors that are associated with the propensity to drink coffee.

Stories like this–I can’t go far as to say studies like this, because I’m only getting the media spin–are really frustrating. They come out so fast it’s hard to keep track. And they frequently contradict one another. So how is it they keep getting printed?

One more thing: you got to love the cheeky policy prescription in the opening lines of the piece:

In case you needed one, here’s another possible reason to have that cup of coffee in the morning: Men who regularly drink coffee appear to be less likely to be diagnosed with prostate cancer, especially the most lethal kind, according to new research.

So drink up, men–at least until next week’s study. (In fact, we can put aside the question of future, contradictory studies and simply think about the costs to health of drinking lots of coffee–no mention of those in the piece, either.)

Do cell phones cause brain cancer?

This New York Times magazine piece is to be commended for it’s incisive title, saving me the trouble of boiling it down. Beyond that, it worries me a lot. I’m only 3 pages into it but I’ve already come across some pretty sad stuff. No, not sad in terms of cell phones, but what passes for causal inference in some circles. More soon.