The food environment changed significantly in the 1970s leading to a rise in weight gain across demographics. This change was primarily driven by the invention of ultra-processed foods due to the industrialization of the food supply. Factors like a growing population post-war and the convenience these products offered played a crucial role in their widespread adoption. The financialization of the food industry has also contributed to this shift, with financial indicators dictating the actions of food companies rather than public health concerns. Currently, a small number of companies dominate the food market globally, with about 15 to 20 companies producing the majority of processed foods in the UK. This consolidation has led to a reduction in the variety of foods consumed, with a significant portion of global calories coming from just six companies and most meats coming from a few animal sources. This commercial efficiency has narrowed down the human diet to a few food products controlled by companies seeking to generate intellectual property.

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