90% of the "food" in grocery stores today didn't exist 90 years ago.
Guess what else?
90% of the diseases we face today
didn't either.
Think about that..

If  a certain food did not exist before 1900, don't eat it (i.e. industrial seed oils and most junk food), and if it existed but rarely eaten (i.e. sugar), eat it rarely. You'll be healthier than 90% of the population.