"The global and regional costs of healthy and sustainable dietary patterns: a modelling study" (2021)
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Compared with the cost of current diets, the healthy and sustainable dietary patterns were, depending on the pattern, up to 22โ34% lower in cost in upper-middle-income to high-income countries on average (when considering statistical means), but at least 18โ29% more expensive in lower-middle-income to low-income countries. Reductions in food waste, a favourable socioeconomic development scenario, and a fuller cost accounting that included the diet-related costs of climate change and health care in the cost of diets increased the affordability of the dietary patterns in our future projections. When these measures were combined, the healthy and sustainable dietary patterns were up to 25โ29% lower in cost in low-income to lower-middle-income countries, and up to 37% lower in cost on average, for the year 2050. Variants of vegetarian and vegan dietary patterns were generally most affordable, and pescatarian diets were least affordable.
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https://www.thelancet.com/journals/lanplh/article/PIIS2542-5196(21)00251-5/fulltext
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