syslog for your body

I ran across this interesting post. Basically the point is that we don't really have any good monitoring for our bodies. Wouldn't it be cool if we had some devices that could monitor a bunch of health related stats and report them to some centralized dashboard? In Unix there is a system called syslog, where significant events get logged. It would be cool to have something like this for our bodies.

I wonder how difficult it would be to design a small sensor that you could swallow each morning like a vitamin. This sensor could dump stats when ever it's connected. Maybe it could be WiFi enabled, so you would just need to walk through a WiFi hot spot during the day to get your latest stats.