High blood pressure, also known as hypertension, is one of the leading causes of heart disease and stroke around the world. It affects millions of people and often develops without causing any symptoms.
Many people feel completely healthy even when their blood pressure is dangerously high. Over time, however, untreated high blood pressure can quietly damage the heart, brain, kidneys, eyes, and blood vessels. That is why doctors call it a “silent killer.”
Most people with high blood pressure can control it through a combination of healthy lifestyle changes and medication. However, this is not true for everyone. Some people continue to have high blood pressure even after taking several different medicines.
This condition is known as drug-resistant hypertension. It affects about 12.8 percent of people with high blood pressure and greatly increases the risk of serious health problems.
In recent years, blood pressure guidelines have also become stricter. Many health organizations now define high blood pressure as 130/80 mmHg or higher instead of the older target of 140/90 mmHg. While this change may help prevent heart disease earlier, it also means that more people need effective ways to lower their blood pressure.
A new study suggests that certain B vitamins may provide another option, especially for people whose blood pressure remains high despite taking medication. The research was led by Merrill Elias from the University of Maine and was published in the American Journal of Hypertension.
Instead of testing a new drug, the researchers focused on a natural substance in the body called homocysteine. Homocysteine is produced during normal metabolism, which is the process the body uses to turn food into energy.
Normally, the body keeps homocysteine levels under control with the help of several B vitamins, including vitamin B6, vitamin B12, folate, also known as vitamin B9, and riboflavin, or vitamin B2.
Problems develop when homocysteine levels become too high. This can happen because of inherited genetic differences, poor nutrition, or low levels of these important B vitamins. High homocysteine levels may damage blood vessels, make arteries become stiffer and narrower, and increase the risk of high blood pressure, heart attacks, strokes, and other cardiovascular diseases.
To better understand this connection, the researchers reviewed findings from earlier studies. They found that lowering homocysteine through B vitamin supplements reduced blood pressure by about 6 to 13 mmHg in many participants. This is a meaningful reduction because even a small drop in blood pressure can lower the risk of heart disease and stroke over time.
The researchers believe that B vitamins may work as an additional treatment alongside standard blood pressure medicines rather than replacing them. This could be particularly helpful for people with drug-resistant hypertension who have difficulty reaching healthy blood pressure levels.
The study also highlighted another important issue. Many medical laboratories currently consider homocysteine levels up to 11.4 micromoles per liter to be normal. However, the researchers argue that the healthiest level may actually be 10 micromoles per liter or lower.
They suggest that laboratories should consider updating their reference ranges because slightly lower homocysteine levels may provide better protection for heart and blood vessel health.
Although these findings are encouraging, the researchers stressed that vitamin supplements should not be started without medical advice. Taking large amounts of vitamins is not always harmless, and not everyone has high homocysteine levels.
A healthcare provider can perform blood tests to determine whether vitamin supplementation is appropriate and recommend the correct dose if needed.
In addition to medication and, in some cases, vitamin supplements, healthy daily habits remain essential for controlling blood pressure.
Eating less salt, enjoying more fruits, vegetables, whole grains, beans, nuts, and lean protein, exercising regularly, maintaining a healthy weight, avoiding smoking, limiting alcohol, reducing stress, and getting enough sleep all play important roles in protecting heart health.
This research adds to growing evidence that nutrition may influence blood pressure in ways scientists are only beginning to fully understand. While more clinical studies are still needed, lowering homocysteine through B vitamins could become a simple, affordable, and safe addition to current treatment for some people.
For now, anyone interested in using B vitamins to help manage high blood pressure should first discuss the idea with their doctor to make sure it is the right choice for their individual health needs.
If you care about high blood pressure, please read studies that early time-restricted eating could help improve blood pressure, and coconut sugar could help reduce blood pressure and artery stiffness.
For more information about blood pressure, please see recent studies about added sugar in your diet linked to higher blood pressure, and results showing plant-based foods could benefit people with high blood pressure.
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