A former coworker from Wyeth, let's just call him Dr. L., is not blessed with much luck (or much hair) on a good day.
epidemiological studies
Air pollution epidemiology has tended to emphasize premature mortality; the NIH database lists over 3000 papers with those terms in the title or abstract.
It is difficult to describe how badly I wanted to include the terms "Fracking" and "F#####" in that title. But I had a momentary lapse in poor taste, so I went with a tamer choice.
Some scares never go away no matter whether there is a remotely plausible basis for the scare (maybe asbestos in talc) or pure insanity (vaccines causing autism).