The effect is most pronounced in counties with many drinking water wells, indicating that contamination by "produced water" from fracking is a likely cause.
On May 1, workers have a chance to confront Trump by turning the tricks of his trade back on him -- dealing in the language of power.
Dennis Trainor, Jr. is the host and producer of Acronym TV. He has also produced and directed the documentaries American Autumn: an Occudoc and Legalize Democracy. Follow him on twitter (@DennisTrainorJr).