And yes, I'm aware that Google doesn't currently seek to be in a position where they could lock you out of your own records, but the octopus's tentacles only grow. I'm also aware that Google Health is quite old... it was around back when I worked on Google's indexing system a decade ago.
Edit: This month, expiration of Google's legacy free tier of whatever they now call Apps For Your Domain is forcing me to get off of my butt and migrate my vanity domain away, and start moving the keys to my digital life off of Google's "free" services. It'd be rather painful if I got locked out of GMail today, and I don't have any financial leverage to get back in.