Research. It’s the reason the full professors have abandoned the classroom, leaving your kids to be taught by grad students. It’s a leading cause of cancer in mice. Worst of all, it costs money to conduct. And that’s a problem, because many of the folks with full pockets have reasons to want the results of scientific research to go their way.
And so you have situations like the one Marion Nestle describes in her blog: She’s recently reviewed at 114 industry-sponsored studies of food. Only nine produced results that went against the sponsors’ interests. That should give us all pause.
Of course, you have to be cautious in looking at a number like that. Corporations have learned to be smart about the research they sponsor. By the time they write a check, they ought to have a pretty good idea of what the research will find. (In the world of pharmaceuticals, many people are scandalized by how low the success rate is in late-stage clinical trials. Why, they ask, are companies wasting time and money on things that they don’t already understand thoroughly?) For example, a recent study out of the University of Granada found that vegetables fried in extra-virgin olive oil had higher concentrations of phenols than boiled vegetables. But consider two facts: (a) there are phenols in extra virgin oil, and (b) when you fry food it loses moisture, automatically increasing the concentration of what’s left. Do we think anyone was yelling eureka! around that lab?
On the other hand, there are studies that stink to high heaven, like that University of Maryland study in which concussed athletes who drank a particular brand of chocolate milk did better on cognitive tests. (New York magazine has posted a hilarious account of one reporter’s efforts to find out what, if anything, was behind the press release that started the whole flap.) Sponsorship was undoubtedly a problem, but the way it played out was in bad methodology. You didn’t need to know who the sponsor was to know that it was flawed.
Which brings us to this week’s big food-science scandal. The Independent in England blew the whistle on a study that found that diet soda could lead to weight loss. The study, it revealed, was sponsored by the International Life Sciences Institute, an organization that included Coca Cola and Pepsico as members. One of the researchers actually belonged to an ILSI task force, and others had worked with sweetener-related companies and organizations. Worst of all, though the researchers had reviewed 5,000 previous papers, they used only three in reaching their conclusion—though only one actually agreed with them.
Sounds awful, right?
But before we tweet our condemnations to the world, let’s take a minute and look at the study itself, which appeared in the International Journal of Obesity. It’s slow reading but interesting for showing what people are studying in the field and what the issues are for scientists. Here’s what it covers:
A couple of thoughts:
Bottom line: Let me just say what the researchers always say. More study is needed. And results we can trust.
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