RO water is stated to be healthy. What proof is there for that? Can you refer to scientific articles?
In my water research thus far, I have not come across any scientific articles proving that RO water (reverse osmosis water) is healthy, other than the fact that it does remove some (but not all) unhealthy contaminants from water.
However, since the reverse osmosis purification system also removes the minerals in water, I believe drinking this water for a prolonged length of time is not healthy.
You can read more of my comments on reverse osmosis water here.
Several years ago, I drank reverse osmosis, convinced at the time that it was the purest drinking water. After a few years, I ended up with osteopenia (pre-osteoporosis).
Perhaps it was a coincidence, but I am convinced the RO water was at least partly to blame.
I also noticed that when I got off the reverse osmosis water and started drinking filtered water again, I had noticeably more energy.
So, from my personal experience I believe there is something to the statement from many water experts that demineralized water is "dead" water.
In many ways, reverse osmosis water is like distilled water because they are both demineralized.
You can read what some reputable doctors have said about the disadvantages of drinking distilled water here.
The World Health Organization (WHO) published a lengthy study on the health risks associated with drinking demineralized water. You can read the full study here.
The WHO study is the most comprehensive scientific-type of study published that I have come across this far that suggests that drinking RO water for any lengthy of time is not healthy.
In 2012 I came across an article in our local paper about a study that was conducted at Montana State University in Bozeman, Montana regarding the health benefits of drinking mineralized water.
You can read the full article here: MSU study finds that drinking mineralized water might provide health benefits
Some RO water system manufacturers offer an optional add-on to replace some of the minerals that are removed through the RO process. Investing in these add-ons is highly recommended if you already have an RO system or are determined to buy one.
The best mineral add-ons I have seen are with the Crystal Quest RO water systems. They offer the optional mineralizer add-on for their under sink and countertop drinking water systems.
In conclusion, if I had to choose between drinking tap water or reverse osmosis, I would choose RO water because I believe the contaminants and chemicals in tap water are more dangerous than demineralized water.
In addition, I always recommend adding a high-quality, natural sea salt (rich in trace minerals) to water for optimum hydration.
Rather than RO water, I believe the better choice in drinking water is filtered drinking water and the best choice is water that is both filtered and ionized.
You can read more about the three key health benefits of ionized water here.
I hope this answers your question and gives you some options to consider for the healthiest drinking water.
P.S. If any visitor comes across any other peer-reviewed studies that prove the health benefits or health risks of drinking demineralized water, please send them my way!
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