[amanaplanacanal]

There was very little obesity in the 70s. There is a lot now. If you can show that diets are worse now than they were in the 70s, you might have something. But are they worse?

[cjlars]

"Eating five or more fruits and vegetables a day has decreased from 42 percent to 26 percent" ... "between the period 1988-1994 and then 2001-2006."

https://www.livescience.com/5435-american-diets-worse.html