The unfortunate part is that most do not know that apps (like z.Bsp. The last version of the Facebook app) Everything, absolutely everything soak the phone and forward to us unknown Spionier departments of companies or governments continues.
This means that not only the rights of this app could be problematic, but that from now on every one of our (and integrity) Doctors (possibly in naive ignorance) used such programs that reveal our entire private life.
Simply put: Other apps can steal our health data from this app and pass on unknown third party.
A privacy there in times of smartphones is no longer - I have not installed this app.