The study, recently published in the Annals of Internal Medicine, claimed that the health threat from red and processed meat has been overstated, and that warnings connecting meat consumption to heart disease and cancer are not backed by good scientific evidence.
The group of about 20 researchers, which goes by the name NutriRECS, said meat eaters should continue their current levels of consumption.
But the study did not disclose that NutriRECS has formed a partnership with an arm of Texas A&M University called Agriculture and Life Sciences (AgriLife), which is partially funded by the beef industry, the Post reported.
One of the study authors was Patrick Stover, vice chancellor and dean of AgriLife.
He said the meat study was completed before the new funding came from the beef industry and that beef accounts for just a tiny fraction of research at AgriLife, the Post reported.
One nutrition expert took issue with that response.
"Of course that institution [AgriLife] is tightly tied with the cattle industry," said Walter Willett, a professor of epidemiology and nutrition at the Harvard School of Public Health and a critic of the NutriRECS meat study.
"It is inconceivable that Stover's involvement in this project was by chance or because Stover had expertise in this area. ... There were clearly huge conflicts of interest that readers should have known about," Willett told the Post.
The Annals of Internal Medicine says it requires authors to "disclose all active and inactive financial and intellectual interests related to health care."
However, Editor-in-Chief Christine Laine would not say whether the NutriRECS ties with AgriLife should have been disclosed, the Post reported.
If there was a funding source for this study that was not disclosed, the journal would have to publish a correction, but would not retract the paper, Laine said.