There's no mention of "sudden change" in parent's post. The reference is to "modern age", which is consistent: shift from manual to sedentary job, increase of p

There's no mention of "sudden change" in parent's post. The reference is to "modern age", which is consistent: shift from manual to sedentary job, increase of processed foods, increase of food availability, increase of pressure from industry to eat more and more processed foods; it's a very linear phenomenon.