Evidently, the answer is yes.
I came across this Salon article that talks about a new study of medical conspiracies (see We’re a nation of medical conspiracy nuts by Mary Elizabeth Williams). The study found that 49% of Americans believed in one medical conspiracy, and 18% believed in three or more.
These are the top medical conspiracies (and NONE of them are true!!).
–“The CIA deliberately infected large numbers of African Americans with HIV under the guise of a hepatitis inoculation program”
–“Doctors and government still want to vaccinate children even though they know these vaccines cause autism and other psychological disorders”
–“The FDA is deliberately preventing the public from getting natural cures for cancer and other disorders because of pressure from drug companies”
–“Health officials know that cell phones cause cancer but are doing nothing to stop it because large corporations won’t let them”
–“Public water fluoridation is really just a secret way for chemical companies to dump the dangerous byproducts of phosphate mines into the environment”
–“The global dissemination of genetically modified foods by Monsanto is part of a secret program launched by the Rockefeller and Ford foundation to shrink the world’s population.”
You can find info about the original study here: Oliver & Wood, Medical Conspiracy Theories and Health Behaviors in the United States