Well, do you drink caffeine every day AND worry about the levels of pesticide residues on your supermarket produce? Chances are you're worried about the wrong thing....
These two articles should go some way to help understand how different substances interact with us differently, depending on how much of it we eat.
** Scroll to the bottom for a fun pesticide calculator to find out how many pieces of fruit/vege you would need to eat to experience an adverse effect from its pesticide residue
https://thoughtscapism.com/2018/05/07/measures-of-toxicity/
http://fafdl.org/…/glyphosate-vs-caffeine-acute-and-chroni…/