Water purification is an increasingly popular option for people who want to reduce the amount of contaminants in their drinking water.
The idea is that it will reduce the number of bacteria, which can be harmful to your health.
The problem is, there’s no data to support it.
And there’s good reason to be concerned about it.
A recent study published in the journal Environmental Health found that people who use a water purification system to remove chlorine and other chemicals found in drinking water have higher rates of cancer, cardiovascular disease and diabetes.
“The health benefits are not very clear,” said Robert M. Nadel, MD, a professor of environmental medicine at the University of North Carolina School of Medicine and author of the study.
“There is a need to be able to say more definitively what the health benefits of these systems are.”
What you need to know about the study: Water purifying systems are getting more popular because of a global warming crisis that has forced cities around the world to switch from traditional drinking water supplies to tap water.
But there’s also a real risk that they could be creating more problems, especially if people don’t properly use them.
Nader said that’s why the Centers for Disease Control and Prevention recommends using a water filter for every household, even if you don’t live in one of the city’s most polluted neighborhoods.
The CDC recommends using at least two filters per household for water purifiers, as the amount required is equivalent to replacing the entire drinking supply.
“These systems need to provide sufficient filtrating capability to protect your health,” Nader told CNN Health.
“If you have too much filtting, you could get a very high amount of toxins that are not good for you.”
And if you are using a system that does not properly filter the water, you are potentially creating a more severe leak that could lead to a larger-scale contamination.
The study looked at 5,738 people and their drinking systems.
Those who used at least one water filtrate had lower rates of heart disease, diabetes, cancer and other diseases.
The findings, based on data from the World Health Organization, showed that people with higher consumption of tap water had a lower risk of cancer and heart disease.
They also had a higher risk of diabetes, asthma and stroke.
The researchers did not include people who used filtered water for other reasons, such as washing their hands before and after drinking, or using a regular shower.