While I certainly can't argue with the statements regarding the epigenetic impact of chemicals on the human species, there are certainly other factors to take into consideration when looking at the 150 mil people with chronic disease in this country. Science would be hard pressed to pin it down to any one specific area of influence.

In 1900, the average life expectancy of the white American male was only 47 years. The entire US population was only a little over 76 mil. People didn't live long enough then to see chronic disease or to survive it for long.

Today, due to our continuing growth of understanding in the areas of nutrition and medical science, the average life expectancy of the same white American male is 76.4 years. There are more than 100 mil people over the age of 50 alive in the US today. That's more than the entire US population a century ago. So, there are more people living with conditions that were untreatable a century ago also.

And, since there are obvious epigenetic impacts on us as a species, it also stands to reason that (and I say this with the assumption that we all believe in some form of evolution) the human genome will evolve and adapt to these changes being wrought upon us by our own poisonous concoctions. Survival of the fittest will win out eventually and those with a dominant ability to to adapt to Atrazine and Glyphosate will survive and create offspring that will have no adverse affects to it's use.