There are lots
of other changes this represents too, such as the presence
of chemicals in our food supply (pesticides, herbicides, xenoestrogens, etc) that didn't exist in the ancient diet, as well as the dramatic changes caused by hybridization
of many
of our foods, which creates versions
of fruits and vegetables bred more for size,
sweetness, and appearance as opposed to
natural nutrition... this aspect has decreased micronutrient content in the modern day food supply (just look at wild
blueberries vs cultivated
blueberries as an example
of that with wild berries coming in at more than DOUBLE the antioxidants from ORAC testing).