If Your Heart Numbers Changed Tomorrow, Would You Know?

Most people know their age, weight, or even how many steps they take each day. But far fewer know their blood pressure, cholesterol levels, or resting heart rate.

The concern? Many heart conditions develop silently. High blood pressure and high cholesterol often don't cause symptoms until they've already damaged your heart and blood vessels.

Cardiologist Dr. Andrew Mathias shares a few key heart health numbers to help you spot potential problems earlier and understand when it's time to make lifestyle changes or talk with your care team.

Key Heart Health Numbers to Keep in Check

No single heart number tells the full story. Instead, looking at several measurements together can help you better understand your heart health.

The three most important numbers to know are:

• Blood pressure :The force of blood pushing against your artery walls.
• Cholesterol : Helps estimate your risk of heart disease and stroke.
• Resting heart rate : Reflects how hard your heart works when your body is at rest.
  
  

What is Normal Blood Pressure by Age?

Blood pressure is measured using two numbers: systolic (the top number) and diastolic (the bottom number). Together, they help show how well your blood is moving through your body.

In general, a healthy blood pressure is less than 120/80 mm Hg. Higher numbers may indicate high blood pressure or hypertension, which increases the risk of heart attack, stroke, kidney disease, and other health concerns.

Because blood pressure usually doesn't cause symptoms, regular screening is one of the best ways to catch problems early.

Does normal blood pressure change with age?

While blood pressure often increases as people get older, the definition of healthy blood pressure remains the same for most adults. Your doctor may recommend individualized goals based on your age and medical history.

Cholesterol Numbers Explained

Cholesterol is another important part of your heart health picture. While your body needs some cholesterol, too much of the wrong kind can increase your risk of heart disease.

Your ideal cholesterol numbers depend on your age, health history, and other risk factors.

Why Does Cholesterol Matter?

Not sure what HDL, LDL, or non-HDL cholesterol mean? Our guide explains your numbers and ways to improve them naturally.

Read the Guide

Resting Heart Rate: What’s Normal?

Ever notice your smartwatch says your resting heart rate dropped—or suddenly jumped? Here's what that number could be telling you.

Your resting heart rate is the number of times your heart beats each minute while you're at rest. For most adults, a normal resting heart rate ranges from 60 to 100 beats per minute. People who exercise regularly often have lower resting heart rates.

Several factors can affect your resting heart rate, including:

• Physical fitness
• Stress
• Illness or fever
• Caffeine
• Certain medications
  
  

A temporarily elevated heart rate isn't always a cause for concern, but a consistently high resting heart rate or noticeable changes are worth discussing with your physician.

What Is Your Target Heart Rate During Exercise?

Your target heart rate is different from your resting heart rate. During exercise, your heart naturally beats faster to deliver more oxygen to your muscles.

Your ideal target heart rate depends on your age and how intensely you're exercising. While many fitness trackers estimate heart rate zones, your healthcare team can help you determine what's appropriate for your individual health and fitness goals.

How to Track Heart Health at Home

You don't have to wait until your annual checkup to keep an eye on some of your heart health numbers. At home, you can keep track of:

You don't have to wait until your annual checkup to keep an eye on some of your heart health numbers. At home, you can keep track of:

• Blood pressure using a validated home monitor
• Resting heart rate by checking your pulse or using a smartwatch or fitness tracker
• Heart rhythm notifications from wearable devices that detect possible irregular heartbeats
  
  

When checking your numbers at home, try to measure them under similar conditions each time. For example, check your blood pressure after sitting quietly for several minutes rather than immediately after exercise.

If you experience chest pain, shortness of breath, fainting, or other emergency symptoms, call 911 immediately. If you notice consistently abnormal readings or receive repeated notifications of irregular rhythm from a wearable device, contact your doctor.

Small Changes that have a Big Impact on Heart Health

The good news is that your numbers aren’t fixed. Daily habits play an important role in keeping your blood pressure, cholesterol, and heart rate within healthy ranges.

Some of the most effective ways to support heart health include:

• Getting regular physical activity
• Eating a heart-healthy diet
• Maintaining a healthy weight
• Prioritizing sleep
• Managing stress
• Avoiding tobacco products
• Limiting alcohol
• Managing chronic conditions such as diabetes
  
  

Even small changes can improve your heart health over time.

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