Without remineralization, RO water is akin to distilled water. In other words, it’s devoid of healthy minerals and other compounds found in natural spring water. The problem with consuming pure RO water is that it attracts minerals from your body and/or your food. That can lead to electrolyte deficiencies or imbalances. That’s why I don’t recommend consuming distilled or RO water, unless it has been remineralized. Most RO systems on the market don’t include remineralization capabilities, making them less than ideal as a source of drinking water.