The reason you're getting downvoted a lot is that HN is pretty hostile to snake oil and pseudoscience, and alkaline water is a poster child for both. I'm happy

The reason you're getting downvoted a lot is that HN is pretty hostile to snake oil and pseudoscience, and alkaline water is a poster child for both. I'm happy to be corrected if I'm wrong, but I think that a registered medical device does not mean that it works - just that it's not harmful. There have not been any studies showing alkaline water is beneficial for anything other than possibly slowing bone loss. I've read a lot of the marketing literature around water alkalizers, and whether or not they actually do something beneficial, I can promise you that the marketing materials are full of intentionally deceptive claims (like "registered medical device"), and discredited theories, and just plain gibberish that depends on wowing the reader with a lot of science-sounding words. If it's not snake oil, then it's a real shame it's sold using snake oil sales techniques.