This is a must read study that dives into Revere Osmosis water and demineralized drinking water. For a long time this source of water or purification has been deemed as the go-to water purification method.

Summized points:

The possible adverse consequences of low mineral content water consumption are discussed in the following categories:

Direct effects on the intestinal mucous membrane, metabolism and mineral homeostasis or other body functions.
Little or no in take of calciumand magnesium from low-mineral water.
Low in take of other essential elements and micro elements.
Loss of calcium, magnesium and other essential elements in prepared food. Possible increased dietary in take of toxic metals.

Read the full report here conducted by Frantisek Kozisek

National Institute of Public Health Czech Republic and World Health Organization __________________________________________

https://www.who.int/water_sanitation_health/dwq/nutrientschap12.pdf