High blood pressure is one of the most common health problems in the world. Millions of people live with it every day, and many do not even know they have it because it often causes no obvious symptoms.
Over time, however, uncontrolled high blood pressure can quietly damage the heart, brain, kidneys, and blood vessels. It greatly increases the risk of heart attacks, strokes, heart failure, kidney disease, and other serious health problems. For this reason, doctors often call it a ‘silent killer.’
Most people can lower their blood pressure by eating a healthy diet, exercising regularly, reducing salt intake, maintaining a healthy weight, avoiding smoking, limiting alcohol, managing stress, and taking blood pressure medicines.
Unfortunately, these methods do not work well for everyone. Some people continue to have high blood pressure even after taking several medications exactly as prescribed. This condition is sometimes called resistant or difficult-to-control high blood pressure.
Researchers have found a promising new treatment that may help these patients. The study was published in the medical journal JAMA and looked at a procedure called renal denervation, or RDN. Unlike traditional surgery, RDN is a minimally invasive procedure.
It does not require large cuts or a long recovery period. Instead, it is performed using a thin tube called a catheter, similar to the way doctors insert a stent to open a blocked blood vessel.
The kidneys help control blood pressure. Around the arteries leading to the kidneys are nerves that send signals between the kidneys and the brain. In some people, these nerves become overactive and contribute to high blood pressure. Renal denervation works by reducing the activity of these nerves.
During the procedure, a doctor inserts a catheter through a small opening in the wrist or groin and carefully guides it to the arteries supplying the kidneys. The catheter then delivers either radiofrequency energy or ultrasound energy to the nerves surrounding the arteries.
This weakens the overactive nerve signals that contribute to high blood pressure. After both kidney arteries have been treated, the catheter is removed.
In the latest clinical trial, 224 adults with high blood pressure took part. The research was led in part by Dr. Stephen Jenkins from Ochsner Health. He said renal denervation offers another treatment choice for people whose blood pressure remains high despite taking medication.
The results showed that the procedure successfully lowered blood pressure. Importantly, the improvement lasted for at least two months after treatment.
The new study also builds on earlier research. Previous clinical trials had already shown that renal denervation could help people with different forms of high blood pressure, including those with milder disease. Another major study, called RADIANCE II, confirmed that the treatment produces meaningful reductions in blood pressure.
In addition, three further studies published in JAMA Cardiology, involving more than 500 patients altogether, also found that renal denervation effectively reduced blood pressure across a range of patient groups.
Although this treatment is exciting, it is not meant to replace healthy living. People with high blood pressure should still eat a balanced diet, stay physically active, reduce excess salt and added sugars, maintain a healthy body weight, and take prescribed medicines unless their doctor advises otherwise.
Some studies also suggest that drinking tea, eating meals earlier in the day, and ensuring adequate vitamin D levels in people with diabetes may provide additional benefits, although these approaches are not substitutes for proven medical treatment.
Renal denervation could become an important option for people whose blood pressure remains difficult to control. By lowering blood pressure, it may reduce the long-term risk of heart attacks, strokes, kidney disease, and other complications.
More research will continue to follow patients over longer periods, but the findings so far are encouraging. For many people who have struggled for years despite taking multiple medicines, this simple procedure could offer new hope for a healthier future.
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