Ultra-processed foods (UPFs) are displacing healthy diets “all over the world” despite growing evidence of the risks they pose and should be sold with tobacco-style warnings, according to the nutritional scientist who first coined the term. Prof Carlos Monteiro of the University of Sao Paulo will highlight the increasing danger UPFs present to children and adults at the International Congress on Obesity this week. “UPFs are increasing their share in and domination of global diets, despite the risk they represent to health in terms of increasing the risk of multiple chronic diseases,” Monteiro told the Guardian ahead of the conference in Sao Paulo. “UPFs are displacing healthier, less processed foods all over the world, and also causing a deterioration in diet quality due to their several harmful attributes. Together, these foods are driving the pandemic of obesity and other diet-related chronic diseases, such as diabetes.”

Monteiro and his colleagues first used the phrase UPF 15 years ago when designing the food classification system “Nova.” This assesses not only nutritional content but also the processes food undergoes before it is consumed. The system places food and drink into four groups: minimally processed food, processed culinary ingredients, processed food and ultra-processed food. Monteiro told the Guardian he was now so concerned about the impact UPF was having on human health that studies and reviews were no longer sufficient to warn the public of the health hazards. “Public health campaigns are needed like those against tobacco to curb the dangers of UPFs,” he told the Guardian in an email. “Such campaigns would include the health dangers of consumption of UPFs. Advertisements for UPFs should also be banned or heavily restricted, and front-of-pack warnings should be introduced similar to those used for cigarette packs.”

He will tell delegates: “Sales of UPFs in schools and health facilities should be banned, and there should be heavy taxation of UPFs, with the revenue generated used to subsidize fresh foods.” Monteiro will tell the conference that food giants marketing UPFs know that, in order to be competitive, their products must be more convenient, more affordable and tastier than freshly prepared meals. “To maximize profits, these UPFs must have lower cost of production and be overconsumed,” he said. He will also draw parallels between UPF and tobacco companies. “Both tobacco and UPFs cause numerous serious illnesses and premature mortality; both are produced by transnational corporations that invest the enormous profits they obtain with their attractive/addictive products in aggressive marketing strategies, and in lobbying against regulation; and both are pathogenic (dangerous) by design, so reformulation is not a solution.”