Here's a question for you then: If you had drinking water that had an excessively high natural amount of fluoride that was causing medical issues, is it considered medicating to then filter that water to reduce the fluoridation? Why is it only 'adding' and not 'removing'?
As "medicating" implies addition, I'd not call such filtering "medicating", but it's definitely still be a "medical intervention", a purposeful change from the default motivated by health concerns.
