Mountains, Magnets & Longevity

People in the mountain regions of Northern Japan appear to live the longest.  One might attribute this to clean air, good health from climbing, spring water, etc.

On Mount Kailash in Tibet lives a 400-year-old hermit: 

https://youtu.be/FGvk2m1Hi1c

Recent discoveries with magnetic fields and a working diabetes cure suggest there may be benefit to living on mountains aside from those mentioned above. 

Mountains are often filled with iron which can with other metals take on magnetization:

https://www.tandfonline.com/doi/full/10.1080/14432471.2020.1773235

It's possible and even likely that increased exposure to broad lines of force from iron deposits in mountains may aid humans in health.  How may be related to ion channel potentials in key systems - heart cells, nerves, kidneys, everything gets a boost from magnetic fields and functions more efficiently. 

A working hypothesis that needs lab..