Headlines might describe meat as “a significant health risk” or “essential for a healthy and balanced diet”.

So what’s behind these seemingly contradicatory statements?

Our new research suggests one reason is who pays for the science behind the studies we see discussed online or via social media.

We examined whether meat industry involvement is linked to how scientific papers portray the health effects of eating meat.

We found studies with ties to the meat industry were 16 times more likely to conclude meat is harmless or beneficial, compared with studies without such ties.

Conflicts of interest in nutrition research are not new. Analyses of sugar, ultra-processed foods, and drinks have found the same pattern: industry-funded studies are more likely to produce outcomes that favour the sponsor’s commercial interests.

This can muddy the evidence base used to guide dietary guidelines and policy, which can influence consumers’ choices.

The meat industry’s role in shaping nutrition science has received little systematic scrutiny. Our aim was to address this through a simple question: when the meat industry is involved in a study, does that change the study’s conclusion about meat’s health effects?

We searched for nutrition studies........

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