Here’s the recent news I was referring to - it made a splash and certainly in my mind confused the discussion about space radiation for explorers beyond the ISS:

https://learningenglish.voanews.com/a/us-study-work-in-space-does-not-seem-to-shorten-astronauts-lives-/4719847.html
https://www.reuters.com/article/us-health-astronauts/work-in-space-does-not-seem-to-shorten-astronauts-lives-idUSKCN1OP18W
https://www.unionleader.com/news/health/study-work-in-space-does-not-seem-to-shorten-astronauts/article_098dccca-3c44-5b72-9cbe-7b5a74f2bea1.html

________________________________
Harlan E. Spence
Director, Institute for the Study of Earth,
   Oceans, & Space and Prof. of Physics 
Morse Hall, Room 306 
University of New Hampshire
8 College Road
Durham, NH 03824-3525

Phone: 603-862-0322
Fax:   603-862-1915

http://www.eos.unh.edu/Faculty/Spence
________________________________