> There has never been a better availability of fresh produce everywhere in America and they have never been as cheap at they are.
Sort of. Most grocery store produce in the US will have several days of shipping time and shelf time before being purchased, followed by additional storage time in refrigerators or fruit baskets. Additionally nutrient losses can be incurred when cooking with heat, which is also more frequent in modernity.
This can still result in substantial nutritional decline, and is often very significant in vitamins (especially vitamin C) that oxidize readily.
Sort of. Most grocery store produce in the US will have several days of shipping time and shelf time before being purchased, followed by additional storage time in refrigerators or fruit baskets. Additionally nutrient losses can be incurred when cooking with heat, which is also more frequent in modernity.
This can still result in substantial nutritional decline, and is often very significant in vitamins (especially vitamin C) that oxidize readily.
https://fruitandvegetable.ucdavis.edu/files/197179.pdf