How can I bulk delete health entries?
(Using Apple Health, Shortcuts, or a third-party app)
I accidentally imported data for a whole year without changing the European comma to the US dot, so all entries miss the fractional part… Each entry contains 3 different values, so I need to delete over 1,000 entries which I’d rather not do one-by-one!
I tried to write an iOS app for it, but while printing all related items works, deleting is not possible… 
Although your app can manage only the objects it created and saved, the users can always delete any data they want using the Health app.
Very basic response that you’ve probably already tried:
Can’t you do ‘delete all’ on the source in Apps > Health > Data Access and Devices > Device, for example « shortcuts »?
No, unfortunately not, since I have used the same app to import way more than 1,000 valid entries in the past (multiple times).
Somehow Health doesn’t let me scroll back enough in time to see the oldest entry of this app, so I can’t check whether I still have all the CSV files to import data again if I would use this “nuclear” option.
Since the Apple documentation strongly suggests that no app will be able to delete data from another app, I have manually deleted all related entries (one-by-one)…