Originally Posted by Ron Bennett

A feel-good story ... they don't hold the cure to cancer.

Put them in a place with lots of quickie marts, fast food places, traffic, liquor stores, high-speed internet, etc and see how they do ... if, as a whole, after a few decades, they still didn't get cancer, heart disease, etc, that would be something to get excited about.

To reiterate the point others have made, it's presumably their undeveloped environment along with "natural" living are the reasons for their good health.

Ron