Radiation exposure has also been pinpointed as a potential contributor to John Wayne's untimely demise. Smoking is believed to have been a significant factor in John's cancer diagnosis.

Smoking was believed to have had an impact ... By 1980, 91 out of 220 people had been diagnosed with cancer while 46 had died. John Wayne did have his stomach removed, however, it wasn't done ...

John Wayne, the legendary cowboy actor ... Radiation exposure It's believed that smoking played a significant role in John's ...