Nutrition Studies Under More Scrutiny

A new analysis suggests that nutrition researchers sometimes overstate their findings.

Written byJef Akst
| 2 min read

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WIKIMEDIA, SCOTT BAUERAbout one in every 11 papers published about nutrition and obesity has “some kind of issue that we identified that was degrading the fidelity of research reporting,” the University of Alabama at Birmingham’s (UAB) Nir Menachemi, who led a new analysis of nutrition studies found in leading medical and public health journals, told Reuters Health. “In the article we call it an overreaching statement,” he added. “That’s probably the most fair way to characterize these infractions.” Moreover, observational research is often used to make untested nutrition recommendations, Menachemi and his colleagues found.

Looking at 377 nutrition and obesity papers published in 2001 and another 560 from 2011, the researchers found that nearly 9 percent overstated the findings in the abstract—describing correlational data as evidence of causation, for example, or overgeneralizing the study’s relevance. The 2011 studies contained more “overreaching” statements than did the 2001 papers.

The team’s findings, published in the November issue of American Journal of Preventive Medicine, closely follow another critical study of the field. Just last month (October 9) Edward Archer of the Arnold School of Public Health at the University of South Carolina and colleagues published a PLOS ONE article on this topic “demonstrating that about 40 years and many millions of dollars of US nutritional surveillance data were fatally flawed,” as Archer ...

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Meet the Author

  • Jef (an unusual nickname for Jennifer) got her master’s degree from Indiana University in April 2009 studying the mating behavior of seahorses. After four years of diving off the Gulf Coast of Tampa and performing behavioral experiments at the Tennessee Aquarium in Chattanooga, she left research to pursue a career in science writing. As The Scientist's managing editor, Jef edited features and oversaw the production of the TS Digest and quarterly print magazine. In 2022, her feature on uterus transplantation earned first place in the trade category of the Awards for Excellence in Health Care Journalism. She is a member of the National Association of Science Writers.

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