This is a very subjective question. We have been installing straight reverse osmosis systems since the early 90’s. This has included installations at a large number of health practitioner's homes. We even installed a large commercial reverse osmosis system without remineralization in the cafeteria at the Canadian College of Naturopathic Medicine. That said, the trend over the years has been that many of these naturopaths have chosen to add the minerals back - but certainly not all.