Food as a % of income declined dramatically. This chart has it at 18% in 1960 declining to ~10% today. https://www.ers.usda.gov/amber-waves/2020/november/aver

Food as a % of income declined dramatically. This chart has it at 18% in 1960 declining to ~10% today. https://www.ers.usda.gov/amber-waves/2020/november/average-share-of-income-spent-on-food-in-the-united-states-remained-relatively-steady-from-2000-to-2019 https://www.ers.usda.gov/amber-waves/2020/november/average-s... There were a ton of programs after WWII to improve the nutrition of the country. This largely meant raising calories to prevent malnutrition. And the 80s are as good a point as any other to where that succeeded.