Are there any data sets of diabetes patient records? Logs of blood sugars, carbohydrate, activity etc plus other stats like age, height, weight.
Your question is so general it's hard to be sure I'm answering it correctly. More detail would be quite helpful. Here's a stab, though:
If you're looking for datasets that are already open and are fairly standard social science data, I would look at what ICPSR holds. They have several datasets, in particular this one, contributed by Jens Ludwig at UChicago.
However, none of the files they have probably match what it sounds like you're looking for: in-depth logs from monitoring devices. On that I don't know of any data that's available, at all; to my knowledge, monitoring devices (at least in the US) don't tend to be wired at all.
Data Includes Datetime Stamp, ISIG, and Glucose level.
There is a canonical diabetes data set that is used for all sorts of machine learning tutorials. You can check it out here.
Diabetes patient records were obtained from two sources: an automatic electronic recording device and paper records.
In general, the parent link from UCI has great data sets that are time tested and very useful for learning techniques in machine learning.