High blood pressure is one of the most common health problems in the world today. Doctors often call it a “silent killer” because many people do not feel any symptoms even when their blood pressure is dangerously high.
Over time, high blood pressure can damage blood vessels and organs throughout the body. It greatly increases the risk of heart disease, stroke, kidney disease, and early death.
Millions of people struggle to control their blood pressure. Doctors usually recommend a combination of medicine and lifestyle changes. People are often advised to eat less salt, exercise regularly, maintain a healthy weight, and avoid smoking. Even with these efforts, many patients still find it difficult to keep their blood pressure within a healthy range.
Now a new study from researchers at Emory University suggests that a very simple change could help reduce blood pressure. The research indicates that adding certain minerals—specifically calcium and magnesium—to drinking water may help lower blood pressure in some people.
The idea for the study came from observations in coastal Bangladesh. In that region, people drink different types of water depending on where they live and what water sources are available. Some people drink water collected from ponds or rainwater storage systems. Others drink groundwater that comes from wells.
Groundwater in coastal Bangladesh often contains higher levels of salt because seawater can seep into underground water supplies.
Normally, scientists expect salty water to raise blood pressure because sodium is known to increase blood pressure levels. However, researchers noticed something surprising when they studied the health of people living in these communities.
The research team, led by Dr. Abu Mohammed Naser, found that people who drank the salty groundwater actually had lower blood pressure than those who drank fresh pond water. This finding seemed unusual because salt is usually associated with higher blood pressure, not lower.
To understand why this was happening, the researchers decided to examine the chemical composition of the water and also analyze biological samples from the participants. They collected urine samples from people in the study and tested them for different minerals.
The results revealed an important clue. People who drank groundwater with higher salt levels also had higher levels of calcium and magnesium in their bodies. These minerals were naturally present in the groundwater. This suggested that calcium and magnesium might be helping to lower blood pressure and balance out the harmful effects of salt.
Previous scientific research supports this idea. Calcium plays an important role in how blood vessels function. Blood vessels need to tighten and relax constantly to control blood flow and pressure. Calcium helps regulate this process so that the vessels respond properly.
Magnesium is also very important for the cardiovascular system. It helps the muscles in blood vessel walls stay relaxed, which allows blood to flow more easily. When blood vessels relax, blood pressure can decrease. Magnesium also supports many other functions in the body, including nerve signals and muscle movement.
Because of these effects, scientists have long believed that diets rich in calcium and magnesium can help maintain healthy blood pressure. These minerals are found naturally in foods such as leafy green vegetables, nuts, seeds, whole grains, dairy products, and certain fruits.
The new research suggests that drinking water could also be an important source of these minerals. In areas where drinking water naturally contains calcium and magnesium, people may receive additional protection against high blood pressure.
The researchers believe that adding small amounts of these minerals to drinking water might be a simple and affordable way to help reduce blood pressure in many communities. This approach could be especially helpful in regions where people have limited access to healthcare services or blood pressure medications.
However, the scientists emphasize that more research is still needed. Future studies will need to confirm whether adding calcium and magnesium to drinking water can consistently reduce blood pressure and determine the safest and most effective levels.
High blood pressure remains a major global health challenge. In the United States, nearly half of all adults have high blood pressure or are at risk of developing it. Worldwide, the condition is one of the leading causes of early death.
Because of this, scientists are constantly searching for new and affordable ways to prevent and control the condition.
If further research confirms these findings, health authorities might one day consider adding helpful minerals to public water supplies. This would be similar to how fluoride is already added to drinking water in many places to help prevent tooth decay.
The study provides an interesting reminder that small environmental changes can sometimes have large effects on public health. Something as simple as improving the mineral content of drinking water could potentially help millions of people maintain healthier blood pressure levels.
The research was led by Dr. Abu Mohammed Naser and his colleagues at Emory University and was published in the Journal of the American Heart Association.
If you care about high blood pressure, please read studies about unhealthy habits that may increase high blood pressure risk, and drinking green tea could help lower blood pressure.
For more information about high blood pressure, please see recent studies about what to eat or to avoid for high blood pressure, and 12 foods that lower blood pressure.
Copyright © 2026 Knowridge Science Report. All rights reserved.
