There's something that never seems to be mentioned in articles on making decisions for planet colonisation based on cosmic radiation: humanity is already trying

There's something that never seems to be mentioned in articles on making decisions for planet colonisation based on cosmic radiation: humanity is already trying like crazy to defeat cancer, for the obvious reason that it kills people here on Earth as well. It might sound utopian to suggest that one day we'll just take our anti-cancer pills and not worry about it, but when we're talking colonisation potentially a couple of hundred years ahead, it shouldn't be discounted. (The point in this article about damage to brain tissue is interesting, but again, that's not something that medical research here on Earth will be neglecting).