However your physiology doesn't change in two generations. We can easily adapt our microbiome to get access to new sources of calories. But our erect posture, t

However your physiology doesn't change in two generations. We can easily adapt our microbiome to get access to new sources of calories. But our erect posture, tool crafting and use abilities, and our guts structure are all evolutions we gained from our hunting/scavenging times. We are what we are because of meat and fat, not green leafy vegetables.