A blood pressure of 117/71 mmHg is a good reading. It falls squarely in the “normal” category, which the American Heart Association defines as below 120 systolic (top number) and below 80 diastolic (bottom number). You’re also well above the threshold for low blood pressure, which generally starts below 90/60.
What 117/71 Means for Your Health
The top number, 117, reflects the pressure in your arteries when your heart beats. The bottom number, 71, measures the pressure between beats, when your heart is resting. Both numbers need to be in the normal range for the reading to count as normal, and yours are.
A large meta-analysis found that a blood pressure around 115/75 is associated with the lowest risk of dying from heart disease or stroke. At 117/71, you’re essentially right at that sweet spot. This doesn’t guarantee perfect cardiovascular health on its own, but it does mean that blood pressure isn’t adding extra strain to your heart and blood vessels.
How Blood Pressure Categories Work
Current guidelines break blood pressure into four levels:
- Normal: below 120 systolic and below 80 diastolic
- Elevated: 120 to 129 systolic and below 80 diastolic
- Stage 1 hypertension: 130 to 139 systolic or 80 to 89 diastolic
- Stage 2 hypertension: 140 or higher systolic, or 90 or higher diastolic
If your two numbers happen to fall into different categories, the higher category is the one that applies. In your case, both numbers land comfortably in the normal range, so there’s no ambiguity.
One Reading Isn’t the Full Picture
Blood pressure fluctuates throughout the day. A single reading of 117/71 is reassuring, but it’s a snapshot. Several things can push a reading higher or lower than your true baseline:
- Caffeine, alcohol, or exercise within 30 minutes of a reading can inflate the numbers.
- White coat syndrome affects as many as 1 in 3 people who get high readings at a doctor’s office. Their blood pressure is actually normal outside the clinic.
- Body position matters. Crossing your legs or letting your arm hang at your side instead of resting it on a table at chest height can raise the reading.
If you’re checking at home, take readings at the same time of day, sitting quietly for five minutes beforehand, with your arm supported at heart level. A pattern of readings over days or weeks gives you a much more reliable picture than any single measurement.
Keeping Your Blood Pressure in This Range
Since 117/71 is already normal, the goal is maintenance rather than correction. The same habits that lower high blood pressure also prevent it from creeping up over time, which it naturally tends to do with age.
Regular aerobic exercise, even 30 minutes a day of moderate activity like brisk walking, can lower blood pressure by 5 to 8 points in people with elevated readings and helps keep it stable for everyone else. Strength training at least two days a week adds further benefit.
Diet has a surprisingly large effect. Eating plenty of fruits, vegetables, whole grains, and low-fat dairy while cutting back on saturated fat can reduce blood pressure by up to 11 points. Potassium is a key player here. Aiming for 3,500 to 5,000 mg per day (found in bananas, potatoes, beans, and leafy greens) can lower blood pressure by 4 to 5 points on its own. On the other side of the equation, keeping sodium below 1,500 mg per day is ideal for most adults, though staying under 2,300 mg is a reasonable starting target.
Weight plays a direct role too. For every kilogram (about 2.2 pounds) of excess weight lost, blood pressure tends to drop by roughly 1 point. Waist size is a useful proxy for risk: above 40 inches for men or 35 inches for women correlates with higher blood pressure over time. Sleep matters as well. Adults who consistently get 7 to 9 hours per night tend to maintain healthier blood pressure than those who are chronically short on sleep.
None of these habits need to feel dramatic. At 117/71, you’re not playing catch-up. You’re protecting a number that’s already where it should be.