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The Dangers of Drinking Reverse Osmosis Water

June 7, 2014


The Dangers of Drinking Reverse Osmosis Water

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Scientist and researchers worldwide have repeatedly demonstrated that long-term consumption of reverse osmosis water (RO) water is bad for your health.

Just about, everyone knows that Reverse Osmosis (RO) systems excel at removing water impurities, similar to distilled water they both take out the natural minerals in the water Asia and the European countries call it dead water, in some countries it is even banned, few are aware that they also remove the beneficial minerals. In fact, the reverse osmosis process removes 92-99% of beneficial calcium and magnesium. What is the big deal?

“Disease and early death is more likely to be seen with the long term drinking of distilled water, reverse osmosis water”. Zoltan P. Roma MD MSc, In other words reverse osmosis can cause death.

After analyzing hundreds of scientific studies concerning deminerialized or reverse osmosis water, the World Health Organization released a report stating that such water “has a definite adverse influence on the animal and human organism.”

Consumers have been so concerned with removing as many things from water as possible that they have forgotten to ask if the resulting water actually improves health or causes health problems. It is assumed that no toxins equals better health, but there is simply more to healthful water than a lack of toxins, as the World Health Organization clearly points out.

What is alarming is that consuming reverse osmosis water for even just a few months can create serious side effects. “The effects of most chemicals commonly found in drinking water manifest themselves after long exposure.” However “only a few months exposure may be sufficient ‘consumption time effects’ from water that is low in magnesium and/or calcium.

Illustrative of such short-term exposures are cases in the Czech and Slovak populations who began using reverse osmosis-based systems for final treatment of drinking water at their home taps in 2000-2002. Within several weeks or months various health complaints suggestive of acute magnesium (and possibly calcium) deficiency were reported.Among these complaints were cardiovascular disorders, tiredness, weakness or muscular cramps.” Again, serious side effects within just several weeks or months.

However, it gets even worse. Because reverse osmosis water does not have enough minerals, when it is consumed, it also leaches minerals from the body. This means that the minerals being consumed in food and vitamins are being urinated away. Less minerals consumed plus more minerals, being excreted equals serious negative side effects and big health problems. In a scientific study performed to see if minerals consumed in food can make up for the lack of minerals in reverse osmosis water, scientists concluded that “reduced mineral intake from water was not compensated by their diets…low-mineral water was responsible for an increased elimination of minerals from the body.”

“It has been adequately demonstrated that consuming water of low mineral content has a negative effect on homeostasis mechanisms, compromising the mineral and water metabolism in the body.” Consumption of reverse osmosis water “leads to the dilution of the electrolytes dissolved in the body water. Inadequate body water redistribution between compartments may compromise the function of vital organs. Side effects at the very beginning of this condition include tiredness, weakness and headache; more severe symptoms are muscular cramps and impaired heart rate.”

What about those reverse osmosis systems that add minerals back in?

One popular trend since the negative side effects of consuming reverse osmosis water emerged is the practice of adding minerals back into the reverse osmosis water. On this trend, the World Health Organization states that “possibly none of the commonly used ways of re-mineralization could be considered optimum, since the water does not contain all of its beneficial components. In the case of borderline deficiency of a given element, even the relatively low intake of the element with drinking water may play a relevant protective role.” It is practically impossible to recreate natural water with all of its minerals and trace elements from reverse osmosis treated water. Why risk the side effects of reverse osmosis water in any form if healthful alternatives are available?

Since the early 1960’s, epidemiological studies in many countries all over the world have reported that water low in calcium and magnesium is associated with increased morbidity and mortality from cardiovascular disease.

When used for cooking, reverse osmosis water was found to cause substantial losses of all essential elements from food (vegetables, meat, cereals). Such losses may reach up to 60 % for magnesium and calcium or even more for some other microelements (e.g., copper 66 %, manganese 70 %, cobalt 86 %). In contrast, when mineralized water is used for cooking, the loss of these elements is much lower, and in some cases, even higher calcium content was reported in food because of cooking.

In a multi-city study, women living in cities with low-mineral water more frequently showed cardiovascular changes (as measured by ECG), higher blood pressure, somatoform autonomic dysfunctions, headache, dizziness, and osteoporosis (as measured by X-ray absorptiometry) compared to those of cities with higher mineral content water.


The second website that drives a dagger into the RO industry myth that its pure water is healthy comes from the World Health Organization (W.H.O.). The WHO provides us with a Position Paper titled “The Health risks from drinking
demineralized water” which was written by F. Kozisek. You can tell by the title where the article is headed.

Here is a link to the article:

The final report, published as an internal working document (WHO 1980), concluded that “not only does completely demineralised water (distillate) have unsatisfactory organoleptic properities, but it also has a definite adverse influence on the animal and human organism.”

Scientific testing and the best “unbiased” brains in the world have repeatedly demonstrated that long term consumption of demineralized (RO) water is bad for your health.

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  1. Vikram permalink

    Great work

    • thank you glade you enjoyed

    • The verbiage about To or Distilled water being bad. Is pure BS. You get your minerals from the food you eat mainly leafy vegetibles. How is Distilled water any different than rain water? Both condensed from vapor. Been drinking distilled water near 30 years and I drink a lot. Also have had blood test resulting in perfect health. Forget costly filters and purchased bottled water you don’t need it.

      • you obviously do not understand the molecular structure of water, you also need to understand how acid/alkaline imbalance plays in the human body, due to the fact that there is research on the negative of drinking RO and distilled water, water is supposed to have inorganic minerals, water that has no minerals will leach out the minerals in your own body, cancer clinics use distilled water as a treatment for only about two weeks short term, it will leach the toxic chemicals out of a cell, your body is 75% water if you are putting 75% acidic water which is RO and distilled water you are acidic (inflammation), food is only 25% you can not get enough minerals out of your foods, you can not possibly get enough antioxidants and minerals in one day of eating vegetables compared to one class of electrolyzed reduced water, most of the soils that the foods are grown in are depleted of minerals.

  2. David Veltz permalink

    Why would we want to consider RO water with resulting side effects pointed out in this article?

    • patagoniakidnson permalink

      Folks, all I can say is follow the money… Government organizations are the last to trust. You get your minerals from food and not so much from water. Someone explain how distilled water is any different than rain water from the sky (assuming it isn’t raining in a sand storm).
      Drinking distilled water for 25 years and hair analysis tests throughout the years have shown no change or problems. It’s far cheaper than bottled water, non polluting (no plastic bottles). Consider the source of this information before deciding what is right for you.

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