I know people on both sides of the political spectrum who are on the dumb side of the medical/science spectrum. Surprisingly, most of them are trained medical personnel.
Fun facts i’ve learned from them:
Tilapia isn’t a reall fish but was invented to sell “factory meat” grown in a lab.
The term “ice age” was invented by big oil to help deny the existence of global warming because the climate outside of human caused change is the same as it has been for millions of years. Any evidence of said ice ages is fake science.
Citric acid is a byproduct of the petroleum industry and is added to food products to eliminate problems disposing of a hazardous chemical (an MD told me that one...and he was serious about it.)
Lots of little dumb things, but those stick out.