I have been spraying a lot of Round Up, Vision and other glyphosate products, just about every summer for the last 32 years. And I mean A LOT!! Nothing falling off of me yet and still getting a Cat. 1. I believe some people are more genetically at risk of getting cancer and for them, second hand smoke or a mouse fart could be all it takes to get the disease.
I believe glyphosate to be one of the most important discoveries of our time and most of us should be thankful for cheap 2 X 4's at the building supply and cheap loaves of bread and boxes of cereal at the supermarket.