Summary

Ultra-processed foods are displacing traditional diets, warns Prof Kent Buse . Plus letters from Hugo Harper , Dr Pawan Randev and Patricia Hampton Your editorial on cancers in under-50s ( 8 October ) rightly names food among the culprits. But the confrontation it calls for should be aimed less at obesity than at what produces it. Obesity is the intermediary; the exposure is a food system engineered for profit.

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