Canadians eat about 1,500 mg per person per day of natural pesticides, which is 10,000 times more than we eat of synthetic residues. It is estimated that a person ingests annually about 5,000 to 10,000 different natural pesticides. Every species of plant contains its own couple dozen set of different toxins. Tens of thousands of these natural pesticides have been discovered and Toxic chemicals that plants use against predators are consumed by us at low levels in fruits and vegetables. Almost 100 percent of all pesticides in the human diet are natural pesticides from plants.
http://www.delta-optimist.com/opinion/blogs/deltabc-1.983313/blog-natural-plant-pesticides-1.2015570