Summary #182

NASA's Twins Study: Spaceflight changes the human body, but only temporarily
  • A new study from NASA, involving twins Scott and Mark Kelly, explores how being in space affects our bodies.
  • Apparently, it can damage DNA, influence how thousands of genes are expressed, and increase the length of telomeres (protective caps that prevent DNA degradation).
  • It can also thicken artery walls, modify the microbiome, and increase inflammation.
  • However, this study literally has a sample size of 1, and some observed changes may not have been caused by being in space.


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