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>> And anyway recent studies show that the human body is unlikely to bear a trip to Mars, let alone the health issues caused by weightless environment. citatio

• plopilop 8y ago
  My bad, here it is. http://www.pnas.org/content/early/2018/09/26/1807522115 http://www.pnas.org/content/early/2018/09/26/1807522115
  • gpm 8y ago
    That shows health effects (which we already know exist) - why does it support the claim that the human body is unlikely to reach mars? My understanding is that without shielding about 5% of the voyagers will get cancer, and that many people consider this a reasonably acceptable risk. Does this make that number substantially worse?
    • plopilop 8y ago
      It's also affecting nutrient absorption. I don't see any quantitative number about this in the paper but it's been mentioned several time as having an impact.