Both grandfathers had colon cancer in the age before colonoscopies. One had the lower part of his colon removed, which he had to live with for decades afterward

Both grandfathers had colon cancer in the age before colonoscopies. One had the lower part of his colon removed, which he had to live with for decades afterwards. The recommendations for colonoscopies are not a joke or get-rich scheme - they save lives. As for this comment: What people miss is that these treatments are invented by out of work surgeons. The technology was actually invented by a gastroenterologist at the University of Michigan in the 1950s based on pioneering research of Narinder Singh Kapany on fiber optics. Ignoring the fact that there are very few "out of work" general surgeons, most colonoscopies are not performed by general surgeons but by trained GI specialists assisted by technicians and specialized equipment.