Google Search - For Cancer?

Google, as a company, originally built themselves upon their web search engine and has expanded into many other areas over the years. They recently filed a patent for a wearable device that would use nanotechnology to "uncover and fight off ailments such as cancer". While this sort of thing is nothing we are likely to see this year or next year, at some point we may well find ourselves wearing technology that augments our bodies defenses. It does seem odd that it might come from Google though, doesn't it?
A wearable device can automatically modify or destroy one or more targets in the blood that have an adverse health effect by transmitting energy into subsurface vasculature proximate to the wearable device. The targets could be any substances or objects that, when present in the blood, or present at a particular concentration or range of concentrations, may affect a medical condition or the health of the person wearing the device. For example, the targets could include enzymes, hormones, proteins, cells or other molecules. Modifying or destroying the targets could include causing any physical or chemical change in the targets such that the ability of the targets to cause the adverse health effect is reduced or eliminated.

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