A reading of 108/74 is a good blood pressure. It falls squarely within the “normal” category, which the American Heart Association defines as a systolic (top number) below 120 and a diastolic (bottom number) below 80. In fact, 108/74 isn’t just normal, it’s on the favorable end of normal from a long-term cardiovascular health perspective.
What 108/74 Means for Heart Health
Both numbers in this reading tell a positive story. A systolic pressure of 108 means your heart isn’t working too hard to push blood through your arteries. A diastolic of 74 means the pressure between heartbeats, when your heart fills with blood and your coronary arteries receive their own supply, is in a healthy range. Harvard Health notes that a diastolic reading above 70 is generally ideal for ensuring the heart muscle gets adequate blood flow.
Research from the National Heart, Lung, and Blood Institute puts hard numbers on the advantage. In a study looking at cardiovascular events over 10 years, people with systolic blood pressure between 100 and 109 had roughly 4 events per 1,000 people. That rate climbed to 4.5 for readings of 110 to 119, and more than doubled to 8.3 for readings of 120 to 129. So even within the “normal” range, lower readings like 108 carry measurably less risk of heart attack or stroke.
How It Compares to Other Categories
The current guidelines, updated in 2017, classify blood pressure into several tiers for all adults regardless of age:
- Normal: below 120/80
- Elevated: systolic 120 to 129 with diastolic below 80
- High blood pressure (stage 1): 130/80 or higher
- High blood pressure (stage 2): 140/90 or higher
At 108/74, you’re comfortably in the normal tier with room to spare before reaching “elevated.” These thresholds apply the same way whether you’re 30 or 70. The 2017 guidelines deliberately removed the older, more lenient cutoffs that previously applied to adults over 65.
Could 108/74 Be Too Low?
Some people see a systolic number below 110 and wonder if it’s too low. In most cases, it’s not. Most healthcare professionals consider blood pressure too low only when it causes symptoms. There is no fixed cutoff for diagnosing low blood pressure the way there is for high blood pressure.
Symptoms of genuinely low blood pressure include dizziness or lightheadedness, blurred vision, fainting, fatigue, trouble concentrating, and nausea. If you feel fine at 108/74, this reading is simply a sign of good cardiovascular health. Athletes, younger adults, and people who exercise regularly often have readings in this range without any issues.
One nuance worth knowing: if you have existing heart disease, some research suggests keeping diastolic pressure from dropping much below 70, because narrowed coronary arteries need adequate pressure to deliver blood to the heart muscle. At 74, your diastolic is above that threshold.
Making Sure Your Reading Is Accurate
A single reading is a snapshot, not a complete picture. Blood pressure fluctuates throughout the day based on activity, stress, caffeine, and even whether you’re talking during the measurement. To trust a reading of 108/74, the CDC recommends following a few steps: sit in a comfortable chair with your back supported for at least five minutes before measuring, keep both feet flat on the floor with legs uncrossed, rest your arm with the cuff at chest height, and stay quiet during the reading.
If you’re monitoring at home, taking two or three readings a minute apart and averaging them gives a more reliable number. Readings tend to be slightly higher in a doctor’s office due to the stress of the visit, a phenomenon called white coat hypertension. Home readings that consistently land near 108/74 are a strong indicator that your blood pressure is genuinely in a healthy range.
Keeping It in This Range
The habits that maintain good blood pressure are the same ones that protect your heart overall: regular physical activity, a diet rich in fruits, vegetables, and whole grains while low in sodium, maintaining a healthy weight, limiting alcohol, and managing stress. If your blood pressure is 108/74 now, these habits help ensure it stays there rather than creeping upward over the years. Blood pressure naturally tends to rise with age as arteries stiffen, so a healthy baseline gives you a meaningful head start.