For millions of people living with type 2 diabetes, controlling blood pressure is one of the most important steps in protecting long-term health. But new research suggests that some commonly prescribed blood pressure medications may not be the best option when it comes to preserving kidney function.
Researchers presenting findings at the 63rd European Renal Association (ERA) Congress found that a class of medications known as dihydropyridine calcium channel blockers (DCCBs) was associated with a higher risk of kidney disease progression in people with type 2 diabetes who were already taking modern kidney-protective therapies.
The study analyzed health data from more than 31,000 adults with type 2 diabetes between 2016 and 2021. All participants were taking medications commonly prescribed to protect the kidneys, including renin-angiotensin system (RAS) inhibitors and SGLT2 inhibitors.
Researchers discovered that patients who were also taking DCCBs experienced a 33 percent higher risk of major adverse kidney events compared to those using other blood pressure treatments. These kidney events included a significant decline in kidney function or progression to kidney failure requiring dialysis or transplantation.
While the findings do not prove that these medications directly cause kidney damage, they raise important questions about which blood pressure treatments are safest for people with diabetic kidney disease.
Type 2 diabetes is one of the leading causes of chronic kidney disease worldwide. High blood sugar damages the tiny blood vessels that help the kidneys filter waste from the blood. Over time, this damage can reduce kidney function and eventually lead to kidney failure.
High blood pressure makes the problem even worse.
Experts often describe diabetes, high blood pressure, and kidney disease as a dangerous cycle. Diabetes damages blood vessels, which can raise blood pressure. Elevated blood pressure then places additional strain on the kidneys, accelerating kidney damage.
For this reason, maintaining healthy blood pressure levels is one of the most effective ways to slow kidney disease progression.
Blood pressure medications are designed to reduce the force of blood flowing through the arteries, making it easier for the heart to pump blood throughout the body.
Different medications work in different ways:
These medications relax blood vessels and reduce pressure within the kidneys. They are often considered first-line treatments for people with diabetes because they can help lower blood pressure while also protecting kidney function.
Calcium channel blockers help relax the muscles lining blood vessel walls, allowing vessels to widen and improving blood flow. DCCBs, the type examined in the study, belong to this category.
Sometimes called “water pills,” diuretics help the body eliminate excess sodium and fluid, reducing blood volume and lowering blood pressure.
These medications slow the heart rate and decrease the force of heart contractions, helping reduce blood pressure.
When prescribed appropriately, blood pressure medications can significantly lower the risk of heart attack, stroke, kidney disease, and other serious complications.
Kidney disease is often called a “silent” condition because symptoms may not appear until significant damage has occurred.
Possible warning signs include:
If you have diabetes and high blood pressure, regular kidney function testing can help detect problems before symptoms develop.
Medication is important for many people, but lifestyle changes can also have a powerful impact on blood pressure.
Even modest weight loss can help lower blood pressure, improve blood sugar control, and reduce stress on the kidneys.
Aim to limit highly processed foods, canned soups, fast food, and salty snacks. Many people consume far more sodium than recommended.
The American Heart Association recommends at least 150 minutes of moderate physical activity each week. Walking, cycling, dancing, and swimming can all help lower blood pressure.
Foods such as bananas, sweet potatoes, spinach, avocados, and beans can help balance sodium levels and support healthy blood pressure. (People with kidney disease should consult their healthcare provider before increasing potassium intake.)
Excessive alcohol consumption can contribute to elevated blood pressure and increase the risk of heart disease.
Chronic stress may contribute to hypertension. Deep breathing exercises, meditation, prayer, journaling, and regular physical activity can help.
Poor sleep is increasingly linked to high blood pressure, diabetes, and cardiovascular disease. Aim for seven to nine hours of quality sleep each night.
The new study highlights the importance of individualized treatment plans for people with type 2 diabetes and kidney disease. While blood pressure medications remain essential for preventing serious complications, not all medications may offer the same level of kidney protection.
Patients should never stop taking prescribed blood pressure medications without consulting their healthcare provider. However, the findings underscore the importance of regular kidney monitoring and discussions with a doctor about which medications are best suited for protecting both heart and kidney health.
By subscribing, you consent to receive emails from BlackDoctor.com. You may unsubscribe at any time. Privacy Policy & Terms of Service.
