[quote=@Lauder]
[@ASTA]

While Hael made herself clear, I would like to point out that even through technological advancements the diseases you fight would evolve to become even stronger so no you couldn't outright get rid of diseases, not to mention diseases from other planets. Your little nano things wouldn't know how to fight against a foreign object that it does not know, in fact it may very well begin attacking the host's own cells.

[/quote]

The modern field of nanomedicine has been moderately successful at employing nanotechnology in the treatment of certain forms of cancer (photodynamic therapy is one such nanotechnological method of isolating a tumor and subsequently destroying it, and has been shown to be a superior option to the traditional mode of cancer treatment: chemotherapy), drug delivery (less collateral damage to the body due to the drug being precisely directed at one specific locale instead of being spread about throughout the body proper), and blood purification. I'd go digging around for research papers for you to take a gander at, but I'm really short on time at the moment, so I hope that these two Wikipedia articles will suffice: 

[url=https://en.wikipedia.org/wiki/Nanorobotics#Nanomedicine]

[url=https://en.wikipedia.org/wiki/Nanomedicine]

Not interested in crawling through those two bowls of word soup? Then think of the issue at hand in this particular way: before the advent of the airplane, the wingsuit, or the glider, mankind could only watch aimlessly as birds soared about in the sky. A substantial number of traditionally biological features (such as memory, eyesight, or bipedal locomotion) have been adequately mimicked--and in many cases even ameliorated dramatically--by both modern and archaic machines. 

Why would the immune system be impossible to mechanically replicate? It doesn't make a lot of sense based off of what we've witnessed occurring over the course of the last 6,000 years or so of human civilization. 

Remember: it was only roughly 200 years ago (about ten human generations) that the industrial revolution was the height of human technological prowess. 

But I don't know. I'm not really sure about this RP anymore. Too many inconsistencies and personal bias for me to remain interested.