This is ridiculous. I have been using the Health app ever since 8.0 came out to record my Blood Glucose readings. I do this because my doctor has me bring the readings into him to monitor my diabetes I had about a month's worth of readings recorded. Just updated to 8.1 and Apple has taken Blood Glucose readings out of the Health app. I've lost an entire months worth of readings. Thanks a lot Apple. I can go back and back up through my test meter and enter the readings into a spreadsheet like I used to, but it is going to be a real pain as I test my BG 2-3 times a day. Like I said, thanks a lot Apple. I will no longer use the app. You just can't trust it.