About half of all Americans are affected by high blood pressure, a condition known as hypertension. This condition is the leading risk factor for heart disease and stroke, and it also raises the risk of dementia and cognitive decline. Heart disease, stroke, and dementia rank among the top causes of death in the U.S.
What’s concerning is that only 25% of individuals with a history of high blood pressure have it properly managed.
In August 2025, the American Heart Association and the American College of Cardiology released updated guidelines for the prevention and management of hypertension. These were based on a thorough review of the literature from the past decade.
To dive deeper, The Conversation US spoke with cardiologist Dr. William Cornwell from the University of Colorado Anschutz Medical Campus about the implications of these new guidelines and how patients can work with their doctors to manage their blood pressure.
Key Insights from the New Guidelines
The most recent guidelines had not been updated since 2017, and in that time, much has been learned about hypertension and its management. This new guidance is rich with fresh information.
One significant change is in how hypertension is defined. The criteria are now stricter, with lower target blood pressures compared to before.
The guidelines focus on two types of blood pressure readings: “systolic” (the upper number) shows the pressure when the heart pumps blood, while “diastolic” (the lower number) represents the pressure when the heart rests. Both readings are crucial for determining the severity of hypertension and its treatment.
The guidelines have eliminated the “prehypertension” category. Now, individuals are classified as having “elevated blood pressure” if their readings are between 120-129 systolic over less than 80 diastolic, and as having stage 1 hypertension if they fall between 130-139 systolic and 80-89 diastolic.
Stage 2 hypertension is classified as 140/90 or higher, and a reading of 180/120 or above is a hypertensive crisis. Essentially, the threshold for diagnosis has been lowered, which could affect millions of Americans.
It’s essential for individuals to check with their doctors under these new definitions and discuss whether treatment is necessary. Additionally, patients should explore lifestyle changes, such as diet and exercise, to help manage their blood pressure effectively.
The guidelines also recommend using a risk calculator called PREVENT to assess a patient’s overall risk for cardiovascular disease and heart failure. This tool is significant as it allows for a more personalized medical approach by factoring in individual risk variables.
Connection Between Alcohol and High Blood Pressure
The new guidelines advise limiting alcohol intake since it can elevate blood pressure levels. A 2023 meta-analysis indicated that systolic blood pressure rises roughly 1 mmHg for every 10 grams of alcohol consumed. To put that in perspective, a typical beer has about 14 grams of alcohol. Therefore, regular drinking can gradually lead to increased blood pressure. However, those who cut back on excessive drinking may see a drop in their blood pressure levels.
Though the increase might seem minor, it can compound with other risk factors like weight issues, lack of exercise, poor sleep, stress, and smoking, substantially raising the risk of heart disease, stroke, and dementia.
The updated guidelines encourage a reduction or complete elimination of alcohol consumption. For those who choose to drink, men are advised to limit themselves to two drinks a day, while women should stick to one.
Other Lifestyle Considerations
The guidelines stress that diet significantly influences blood pressure. They recommend that all adults, regardless of hypertension status, should limit their sodium intake to under 2,300 milligrams daily, ideally aiming for under 1,500 milligrams. To provide context, the average American currently consumes over 3,300 milligrams of salt each day. Incorporating potassium-based substitutes may also benefit blood pressure control.
They also promote the DASH (Dietary Approaches to Stop Hypertension) diet for anyone looking to manage their blood pressure. This diet focuses on fruits, vegetables, low-fat dairy, and whole grains, which can lead to a reduction in blood pressure by as much as 10 mmHg.
Moreover, increasing physical activity is highlighted as crucial. Generally, for every additional half-hour of aerobic exercise per week, systolic blood pressure can decrease by 2 mmHg, with the largest impact seen at around 150 minutes of dynamic exercise weekly.
Staying active not only contributes to lower blood pressure but also helps enhance longevity and reduces the risks of various health issues like cardiovascular disease and dementia.
Main Preventive Strategies
The recommended PREVENT risk calculator accounts for several personal factors—including demographics, cholesterol levels, medical history, and blood pressure—to offer a reliable risk assessment. It’s free and available online for all Americans, particularly beneficial for those managing multiple chronic conditions like hypertension, high cholesterol, or diabetes.
The American Heart Association identifies eight essential health behaviors to help manage blood pressure and diminish cardiovascular disease risk. These include maintaining a healthy diet, regular exercise, quitting smoking, getting sufficient sleep, and managing weight, cholesterol, blood sugar, and blood pressure levels.
Will Doctors Change Their Approach to Treating High Blood Pressure?
A standout advancement in these new guidelines is the personalized focus on care, facilitated by the PREVENT calculator.
They also encourage physicians to recommend home blood pressure monitoring, providing patients insights into their blood pressure variations throughout the day.
Lastly, these guidelines promote a more proactive approach for doctors in treating hypertension, a critical adjustment as uncontrolled blood pressure significantly heightens the risk for developing heart disease and stroke.
