Director general accuses corporations of obstructing efforts to tackle obesity crisis after investigation by Guardian and others

The world’s biggest ultra-processed food corporations are hindering global efforts to tackle the obesity crisis by suing governments that try to promote healthier diets, the head of the World Health Organization has said.

Tedros Adhanom Ghebreyesus, the WHO director general, accused global food companies of obstructing the adoption of vital public health measures and costing countries billions of dollars in healthcare and legal costs in the process.

Almost 1 billion people worldwide are living with obesity, and unhealthy diets are one of the main drivers of heart disease, type 2 diabetes and cancer. Ultra-processed food (UPF) consumption is soaring and now makes up half the average diet in many countries, including the UK, the US and Australia.