Astronauts’ blood shows signs of mutations in DNA caused by spaceflight

A study finds that astronauts’ cancer risk needs careful monitoring, as it has stored spacefowl blood for 20 years.

All 14 astronauts in the study, from NASA Space ship The program, has DNA mutations in hematopoietic stem cells, a Study the biology of nature communication (Opens in a new tab) Concluded on August 31. However, the mutations, although unusually high given the age of the astronauts, were below the main concern threshold.