A blood pressure of 115/75 mmHg is not just good, it’s considered optimal. Both the American Heart Association and European Society of Hypertension place this reading in their best category, below the 120/80 threshold that defines the upper boundary of ideal blood pressure. A large meta-analysis found that 115/75 is associated with the lowest vascular mortality risk at a population level.
Where 115/75 Falls on the Scale
The 2025 AHA/ACC guidelines classify blood pressure into four levels. A reading of 115/75 lands squarely in the “Normal” category, defined as below 120 systolic and below 80 diastolic. European guidelines use a slightly different naming system and actually label anything below 120/80 as “Optimal,” distinguishing it from “Normal” (120–129/80–84) and “High-Normal” (130–139/85–89). Under either system, 115/75 sits in the healthiest tier.
The full scale for reference:
- Optimal/Normal: below 120/80 mmHg
- Elevated/Normal (ESH): 120–129 systolic with diastolic below 80 (AHA) or 120–129/80–84 (ESH)
- Stage 1 hypertension / Grade 1: 130–139/80–89 (AHA) or 140–159/90–99 (ESH)
- Stage 2 hypertension / Grade 2+: 140/90 and above (AHA) or 160/100 and above (ESH)
Why 115/75 Is Considered the Sweet Spot
Researchers have specifically studied the 115/75 mark. A major meta-analysis published in The Lancet confirmed that this reading is associated with the minimal risk of dying from vascular causes, including heart attack and stroke. In practical terms, every increment above 115/75 carries progressively more cardiovascular risk, even within the “normal” range. Someone at 135/85 faces meaningfully higher long-term risk than someone at 115/75, even though neither reading would have triggered concern a decade ago.
The SPRINT trial, one of the largest blood pressure studies ever conducted, reinforced this idea from the treatment side. Among adults 50 and older with at least one cardiovascular risk factor, targeting a systolic pressure below 120 (rather than below 140) reduced heart attacks, heart failure, and strokes by 25% and lowered overall death risk by 27%. Participants in the lower-pressure group also had roughly a 20% reduction in mild cognitive impairment. These benefits held across age, sex, and race. If you’re already sitting at 115/75 naturally, you’re in the range that aggressive treatment tries to achieve.
Your Pulse Pressure Is Healthy Too
The gap between your top and bottom numbers, called pulse pressure, also matters. At 115/75, your pulse pressure is 40 mmHg. That’s considered the textbook healthy value. A pulse pressure consistently above 60 can signal stiff arteries, while a very narrow gap may indicate other cardiovascular concerns. At 40, your arteries are likely elastic and functioning well.
Could 115/75 Ever Be Too Low?
Low blood pressure, or hypotension, is generally defined as a reading below 90/60 mmHg. At 115/75, you’re well above that line. Some people naturally run lower and feel perfectly fine at readings that would cause dizziness in others. The key indicator isn’t the number itself but whether you experience symptoms like lightheadedness, fainting, blurred vision, or unusual fatigue. If you feel normal at 115/75, there’s no reason for concern.
That said, blood pressure fluctuates throughout the day based on stress, hydration, caffeine, and physical activity. A single reading of 115/75 is a snapshot. If you’re tracking at home, patterns over days and weeks matter more than any individual measurement.
Getting an Accurate Reading
The way you measure blood pressure affects the number you get, sometimes by 10–15 points in either direction. A few details make a real difference in accuracy:
- Timing: Avoid eating, drinking, or exercising for 30 minutes before measuring. Empty your bladder first.
- Position: Sit with your back supported and both feet flat on the floor for at least five minutes before taking a reading. Keep your legs uncrossed.
- Arm placement: Rest your arm on a table at chest height. The cuff should sit on bare skin, not over a sleeve.
- Stay still and quiet: Don’t talk during the reading. Even a casual conversation can bump systolic pressure by several points.
If your home readings consistently land around 115/75, you can feel confident that your blood pressure is in an excellent range. It’s one of the strongest predictors of long-term cardiovascular health, and yours is where cardiologists would want it to be.