Grammaretto
I'm one of them. I've been a guinea pig since the start. About 2O years.
I've had every kind of scan and test and answered trillions of questions.
It says no names and addresses have been disclosed.
Do I believe that? I want to.
You should believe it. Data is de-identified ie all personal details are removed. The only way you could possibly be identified is if you have a very rare condition and are the only person who fits a number of descriptors.
It's inaccurate to say the date was "hacked". It wasn't. It was sold by one (or more) of the institutions which bought it for legitimate research purposes. It won't be data about the whole person, but about a group of people with a specific condition eg diabetes or high blood pressure. When research institutions buy the date, they only buy a limited number of datasets.