"A switch to water that’s been ultrapurified by reverse osmosis (plus “carbon polishing” and UV sterilization) has proved revelatory." This can mess with one's

"A switch to water that’s been ultrapurified by reverse osmosis (plus “carbon polishing” and UV sterilization) has proved revelatory." This can mess with one's electrolyte balance to a dangerous degree. (She makes a vague reference to buying an "electrolyte mix", but that's before switching to purified water, and she makes no mention of using any.)