However, what I am interested in is the exposure to DDT that we had as a family when young in the 1950s. DDT was a toxic chemical sprayed liberally on fields to act as an insect-killer and as kids we played in those fields not realising the contact we had to this chemical. All three of us kids have had worse health than our parents. DDT was banned because it was disturbing the life cycle of birds, and there was a time when birds flying overhead would drop soft-shelled eggs as they flew, and their eggs failed when in the nest.
I don't know what the long-term health effects are of DDT exposure for humans.