Study Finds Sterile ISS Environment Weakens Astronauts' Immune Systems

Researchers suggest introducing beneficial microbes to improve astronaut health during extended space missions.

Astronauts on the ISS often suffer from health issues such as skin rashes, fungal infections, and weakened immune responses.
A study published in the journal 'Cell' links these problems to the overly sterile environment aboard the ISS, which lacks exposure to natural microbes.
Analysis of over 800 surface samples from the ISS revealed a scarcity of environmental microbes essential for immune system support.
Current cleaning protocols use disinfectants that eliminate beneficial bacteria, leaving only human skin microbes and chemical residues.
Scientists propose introducing specific beneficial microbes to the ISS to promote astronaut health without compromising hygiene.