Page 6 - Mecklenburg_Medicine_February-2017
P. 6

Feature

When Is Science Corrupted?

Gordon Hull, PhD, Director, Center for Professional and Applied Ethics, UNC Charlotte

A paper by Cristin Kearns, just published in JAMA                      contributor to blood cholesterol (which was, in turn, the preferred
              Internal Medicine, makes the case that the Sugar         predictor of CHD) before being approached by the SRF. They
              Research Foundation — an industry advocacy group         published an article to this effect that appeared in November 1965.
              — contributed to the catastrophe that is coronary heart  The timeline is a bit murky: Kearns says the SRF visited Hegsted

disease (CHD) in the United States by paying some prominent            on July 1, 1965, but ordinary journal timelines suggest the original

scientists to blame fat for CHD, not sugar, despite evidence to the    study probably was complete before July. Hite suggests this means

contrary. According to Kearns, in the mid-1960s, the SRF paid          the SRF knew beforehand what Hegsted would say, because of his

Harvard professors led by Mark Hegsted $48,900 (in 2016 dollars) publication record, and that this exonerates him from the pay-to-

Was this corrupted          to critically review                       produce charge. (She does not, however, explain how the SRF had

                            studies linking coronary his research months before it appeared in print).

science? The question is    heart disease to excess                      Hegsted et al. also did not think anyone would embark on a
where we draw the line      sucrose consumption.                       low-fat, high-sugar diet: Supremely cheap corn syrup was a thing
                            As the article went                        of the future. It is the status quo now; in his book “Salt Sugar

between a dispassionate     off to print, the SRF                      Fat,” Michael Moss argues that the convenience food industry
study of the evidence and   representative reported                    essentially has rotated between these three additives in response to
                            to them his assurance                      consumer demand for convenience foods that can be stored easily

cases where that study      that “this is quite what                   and require minimal or no preparation to eat. Whenever popular
was sufficiently nudged by  we had in mind, and                        opinion decides fat is a problem, lower-fat but higher-sugar and
                            we look forward to its                     salt alternatives are offered. When sugar is discredited, fat and

inappropriate factors to    appearance in print”                       salt go up. And so on. But this was arguably not Hegsted’s world.
cross an ethical line.      (qt E3). The resulting                     Indeed, research in science studies dating at least to 1997 points
                            review (which made                         to an extremely complicated socio-political-scientific nexus that

                            no mention of the                          generated dietary recommendations to cut fat and cholesterol; the

                            authors’ ties to the                       science is and was disputed, but was only part of the debate. And,

SRF) made a herculean effort to discredit the research linking         of course, the role of sugar also is debated still. One lesson is that

sugar consumption to CHD, sometimes even inconsistently. It first      food research is hard, because double-blinded studies where you

denied that epidemiological evidence was relevant in determining                                           precisely control food

dietary causes of CHD, but (in the next part) also implied that        Whenever popular                    intake long enough in
epidemiological evidence pointed to dietary cholesterol and            opinion decides fat is              two different groups to
saturated fat as the primary causes of CHD (E3).                                                           measure health outcomes

  Was this corrupted science? There are legitimate, honestly-          a problem, lower-fat                essentially are impossible.
held scientific disagreements, and certainly legitimate clinical       but higher-sugar and                Hence the reliance on
ones about what to do with that science. The question is                                                   debated proxies like serum

where we draw the line between a dispassionate study of the            salt alternatives are               cholesterol, or isolated
evidence and cases where that study was sufficiently nudged by         offered. When sugar is              populations with similar
inappropriate factors to cross an ethical line. Kearns’ research                                           diets, as in Okinawa.

makes Hegsted’s work look like a nearly paradigmatic case of           discredited, fat and salt             So, was Hegsted’s work
corruption. If so, it was consequential corruption. Coronary           go up. And so on.                   morally compromised by
heart disease is, of course, the No. 1 cause of death in the                                               the payment he received

United States; only cancer (all of them combined) comes close.                                             from the SRF? And, to

That implies large numbers of people are now dead because of                                               what extent is the SRF

bought-and-paid-for science, and a nontrivial part of the blame        morally compromised? They apparently have pursued a marketing

for this rests on Hegsted (who died in 2009). This would be up         strategy since the 1950s encouraging people to eat a lower-fat (and

there with the tobacco industry’s efforts to bury the link between therefore, presumably, higher-sugar) diet. For that matter, when is

smoking and cancer, or the fossil fuel industry’s efforts to bury      research into the relationship between food and particular health

the link between carbon emissions and climate change.                  outcomes robust enough to serve as a basis for policy? I don’t have

On the other hand, one can argue (as does Adele Hite, a PhD            the answers to these questions, but given the prominence of CHD

candidate in Communication, Rhetoric and Digital Media at N.C.         and other diseases like Type II diabetes that appear to be — most

State) that the situation is more complicated than that. Hegsted and of the time, at least — generated by lifestyles, it is urgent to ask and

colleagues apparently thought consumption of fat was the main          answer them as honestly as we can.

6 | February 2017 • Mecklenburg Medicine
   1   2   3   4   5   6   7   8   9   10   11