The bottom line
Heart disease can develop for years without obvious symptoms. High blood pressure, high cholesterol, smoking, diabetes, and other factors can raise cardiovascular risk long before someone feels sick. Knowing your numbers and addressing risk factors earlier gives you and your healthcare team more time to manage that risk.
Heart disease often develops quietly
Heart disease remains the leading cause of death in the United States. Many of its major risk factors, including high blood pressure and high cholesterol, can exist without obvious symptoms.
That is one reason routine screening and follow-up matter even when you feel well.
According to the Centers for Disease Control and Prevention (CDC), high blood pressure, high cholesterol, and smoking are key risk factors for heart disease. Age and family history matter too, along with diabetes, physical inactivity, diet, and other health factors.
Finding risk factors earlier gives people and their clinicians more time to address the ones that can be changed or treated.
Know the numbers that shape cardiovascular risk
Blood pressure is a useful example because it can change over time and high blood pressure often has no symptoms. The 2025 American Heart Association and American College of Cardiology guideline classifies stage 1 hypertension as an average systolic blood pressure of 130-139 mm Hg or a diastolic blood pressure of 80-89 mm Hg, with treatment decisions based on overall cardiovascular risk and other clinical factors.
The 2025 AHA/ACC high blood pressure guideline also supports home blood pressure monitoring as part of an integrated care plan for people with high blood pressure.
Cholesterol and blood sugar are also important parts of cardiovascular health. The American Heart Association includes blood pressure, blood lipids, and blood glucose among its Life’s Essential 8 measures, along with diet, physical activity, nicotine exposure, sleep, and weight.
See the American Heart Association’s Life’s Essential 8 for an overview of these cardiovascular health measures.
Look for trends, and bring them to your doctor
One reading rarely tells the whole story. A series of measurements can give your healthcare team more context about what is happening between visits.
The American Heart Association recommends home blood pressure monitoring for people with high blood pressure and advises sharing those readings with a healthcare professional.
If your numbers are changing, write down what you notice and bring that information to your next visit. Do not change medications on your own based on a reading or trend. A healthcare professional can interpret the numbers in the context of your medical history, medications, symptoms, and overall risk.
Symptoms still matter
Cardiovascular disease can be silent, but symptoms such as new chest pain or pressure, shortness of breath, fainting, unusual weakness, or other concerning changes should not be treated as something to track and revisit later. Seek medical guidance promptly, and call 911 for symptoms that may indicate a heart attack or other emergency.
The CDC’s heart attack guidance emphasizes that faster emergency treatment improves the chance of survival.
How Hello Heart supports earlier awareness
Hello Heart helps members keep track of heart health information between clinical visits. Members can measure blood pressure with the connected Hello Heart Monitor and review readings and trends in the app alongside other heart health information.
Hello Heart also uses AI risk flags to identify patterns that may warrant attention. Hello Heart can highlight changes in heart health data that members may want to bring to their healthcare provider’s attention. These notifications do not diagnose a condition or replace clinical judgment.
Learn more about Hello Heart’s approach to AI risk flags.
Nia, Hello Heart’s AI Heart Health Assistant, provides evidence-based information about blood pressure, medications, and heart health behaviors. Nia does not diagnose conditions or make medication changes. Medical decisions should always be made with a qualified healthcare professional.
Read more about Nia and Hello Heart’s AI approach.
For routine visits, the Hello Heart Clinician Report summarizes heart health information that members can choose to share with their care team. That can make it easier to discuss patterns that developed between appointments without relying on memory alone.
What to do with the information
Blood pressure, cholesterol, blood sugar, smoking, family history, medications, and other factors all contribute to cardiovascular risk. Keeping up with recommended screening and bringing changes to your healthcare team can make those conversations more useful.
Know your numbers, follow the screening schedule your clinician recommends, and bring changes or concerns to your care team.
This content is for educational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult your doctor about your individual care and never delay seeking medical advice.
FAQs
Why is early action important for heart health?
Many cardiovascular risk factors can develop without symptoms. Identifying and managing high blood pressure, high cholesterol, smoking, diabetes, and other risk factors earlier can give you and your healthcare team more time to reduce modifiable cardiovascular risk.
Can heart disease develop without symptoms?
Yes. High blood pressure and high cholesterol can be present without obvious symptoms, and some forms of heart disease may remain silent until a more serious problem occurs. Routine screening and conversations with your healthcare provider can help identify risk factors earlier.
What cardiovascular risk factors should I keep track of?
Important factors include blood pressure, cholesterol, blood sugar, smoking or nicotine exposure, physical activity, sleep, weight, age, family history, and other medical conditions. Your healthcare provider can help determine which factors matter most for your individual risk.
How can home blood pressure readings help me understand my heart health?
Home blood pressure readings can show patterns between clinical visits and give your healthcare team more information than a single office reading alone. People with high blood pressure should follow their healthcare provider’s recommendations for how and when to measure at home.
How can AI support preventive heart health?
AI can help identify patterns in heart health data and surface information that may be relevant to a member’s care.. Hello Heart uses AI risk flags and Nia, its AI Heart Health Assistant, to help members understand heart health information and recognize when additional support or clinical attention may be needed. These tools do not diagnose conditions or replace clinical judgment.
