A blood pressure of 117/75 mmHg falls squarely in the normal category. The American Heart Association defines normal blood pressure as a systolic reading (the top number) below 120 and a diastolic reading (the bottom number) below 80. At 117/75, both of your numbers clear those thresholds with a small margin to spare.
What the Two Numbers Mean
The top number, 117, measures the force your blood exerts against artery walls each time your heart contracts and pumps. The bottom number, 75, captures the pressure between beats, when your heart relaxes and refills. Together they give a snapshot of how hard your cardiovascular system is working to move blood through your body.
Both numbers matter, but systolic pressure (the top one) gets more clinical attention because it rises more predictably with age and is a stronger predictor of heart attack and stroke risk in most adults.
How 117/75 Compares to Average Readings
Blood pressure naturally shifts across age groups. The average reading for adults aged 18 to 39 is about 110/68 for women and 119/70 for men. By ages 40 to 59, those averages climb to roughly 122/74 for women and 124/77 for men. Adults over 60 tend to average around 133 to 139 systolic, with diastolic pressure sometimes dropping back down.
A reading of 117/75 sits comfortably within or below typical averages for most adult age groups. If you’re younger, it’s right in line with what’s expected. If you’re middle-aged or older, it’s actually better than average.
Why Staying Below 120 Matters
Current guidelines recommend adults aim for a systolic pressure below 120 mmHg to reduce the risk of heart attack, heart failure, and stroke. That target is backed by strong evidence. A major clinical trial called SPRINT, which enrolled adults aged 50 and older with at least one cardiovascular risk factor, found that targeting a systolic pressure below 120 (rather than below 140) reduced cardiovascular events by 25% and lowered the overall risk of death by 27%. The same intensive target also led to about a 20% reduction in mild cognitive impairment.
Your reading of 117 systolic puts you on the favorable side of that line without medication, which is the ideal scenario. People in the SPRINT trial who were treated down to 120 did experience more episodes of low blood pressure and fainting, reinforcing that reaching this range naturally is preferable to forcing it with drugs.
Sex Differences in Cardiovascular Risk
One nuance worth knowing: the systolic threshold where cardiovascular risk begins to climb is not identical for men and women. Research tracking over 27,000 adults without existing heart disease found that men’s overall cardiovascular risk started increasing at systolic levels between 130 and 139, while women’s risk began rising at systolic levels between 100 and 109 (compared to levels below 100). For heart failure specifically, risk started between 110 and 119 for women and 120 and 129 for men.
This means a reading of 117/75 is reassuring for most people, but women in particular may benefit from keeping systolic pressure as low as comfortably possible, since their risk curve starts at a lower number than men’s.
One Reading vs. a Pattern
Blood pressure fluctuates throughout the day. It rises during exercise, stress, and caffeine intake, and drops during sleep. A single reading of 117/75 is encouraging, but what matters most is your typical range over time.
Some people also experience what’s called white-coat hypertension, where readings in a clinical setting run higher than readings at home due to anxiety. The reverse can happen too. Home monitoring with a validated cuff gives you a more reliable picture. For home readings, an average daytime pressure below 130/80 is generally considered normal, and below 120/75 is considered optimal. Your 117/75 would fall right in that optimal zone if it reflects your usual at-home average.
Keeping Your Blood Pressure in This Range
If your blood pressure is already normal, the goal is to keep it there as you age. The most effective dietary approach is the DASH eating plan, which emphasizes fruits, vegetables, whole grains, lean protein, and low-fat dairy while limiting saturated fat and added sugars. Sodium intake plays a significant role: staying below 2,300 mg per day is the standard recommendation, but reducing to 1,500 mg daily lowers blood pressure even further.
Regular aerobic exercise, maintaining a healthy weight, limiting alcohol, and managing stress all contribute to long-term blood pressure stability. These habits become increasingly important with age, since systolic pressure tends to climb by 10 to 20 points between your 30s and your 60s if left unchecked. The fact that your current reading is normal gives you a strong foundation, but it’s the kind of advantage that compounds over decades when paired with consistent lifestyle habits.