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Study Reveals Sex Differences in Astronaut Brain Health

11/5/2025

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Summary

Story summary

A study published in npj Microgravity finds sex differences in brain-fluid loss and Spaceflight Associated Neuro-ocular Syndrome (SANS) indicators, with female astronauts showing greater brain-fluid reduction and male astronauts more eye compression, based on MRI scans of 37 astronauts.
The study found no significant link between age and brain changes.
The findings imply a need for further research into sex differences in astronaut health as women participate in space missions.

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Story summary

A study published in npj Microgravity finds sex differences in brain-fluid loss and Spaceflight Associated Neuro-ocular Syndrome (SANS) indicators, with female astronauts showing greater brain-fluid reduction and male astronauts more eye compression, based on MRI scans of 37 astronauts.
The study found no significant link between age and brain changes.
The findings imply a need for further research into sex differences in astronaut health as women participate in space missions.