A blood pressure of 103/72 is a good reading. It falls squarely in the “normal” category under the 2025 American Heart Association guidelines, which define normal blood pressure as below 120/80 mmHg. It’s also well above the threshold for low blood pressure, which is generally considered 90/60 mmHg or lower.
Where 103/72 Fits in the Blood Pressure Categories
Current U.S. guidelines break blood pressure into four categories for adults:
- Normal: below 120/80 mmHg
- Elevated: 120 to 129 systolic (the top number) and below 80 diastolic (the bottom number)
- Hypertension Stage 1: 130 to 139 systolic or 80 to 89 diastolic
- Hypertension Stage 2: 140 or higher systolic, or 90 or higher diastolic
At 103/72, both your numbers sit comfortably in the normal range. Your systolic pressure is 17 points below the cutoff for “elevated,” and your diastolic pressure is 8 points below. European guidelines use a slightly different system, classifying anything under 120/70 as “nonelevated,” which is essentially their version of normal. By either standard, 103/72 is a healthy reading.
How This Reading Affects Heart Disease Risk
Blood pressure in the low-normal range is associated with lower cardiovascular risk, though the relationship isn’t identical for men and women. Research from the National Heart, Lung, and Blood Institute, drawing on data from more than 27,500 adults, found that cardiovascular risk thresholds differ by sex. For women, risk for cardiovascular events began to increase at systolic readings between 100 and 109 mmHg compared to readings below 100. Heart attack risk for women started climbing between 110 and 119 mmHg, while for men, it didn’t rise until the 150 to 159 range.
This doesn’t mean a reading of 103 is dangerous for women. It means that even within the “normal” category, lower isn’t always automatically better, and the relationship between blood pressure and risk exists on a continuous scale. A reading of 103/72 still represents low overall cardiovascular risk for both men and women.
When Normal Blood Pressure Could Feel Too Low
Low blood pressure is formally defined as a reading below 90/60 mmHg, so 103/72 doesn’t meet that threshold. But blood pressure is individual. What matters more than any single number is whether you’re experiencing symptoms. Signs that your blood pressure may be too low for your body include dizziness or lightheadedness, blurred vision, fatigue, trouble concentrating, or feeling faint, especially when standing up quickly.
Most clinicians consider blood pressure “too low” only when it causes symptoms. If you feel fine at 103/72, there’s no reason for concern. If you’re experiencing any of those symptoms regularly, it’s worth mentioning to your doctor, even though your numbers look normal on paper. A sudden drop of just 20 mmHg from your usual reading can cause dizziness or fainting, so the context of what’s normal for you personally matters.
103/72 During Pregnancy
If you’re pregnant and wondering about this reading, 103/72 is well within a safe range. High blood pressure during pregnancy is defined as 140/90 or higher on two separate readings at least four hours apart. Severe high blood pressure in pregnancy starts at 160/110. Your reading is far from either threshold. Some pregnant women do experience lower blood pressure than usual during the first and second trimesters, and mild dips are expected. As with anyone else, it only becomes a concern if you’re feeling dizzy, faint, or unusually fatigued.
Does Age Change What’s Considered Normal?
Current guidelines apply the same blood pressure categories to all adults regardless of age. Older guidelines used to set a higher threshold for people over 65, allowing readings up to 150/80 before recommending treatment. That changed after large clinical trials showed that keeping blood pressure lower benefited patients across all age groups. So whether you’re 25 or 75, 103/72 is classified the same way: normal.
That said, blood pressure tends to rise with age as arteries stiffen. A reading of 103/72 is more common in younger adults and in people who exercise regularly, maintain a healthy weight, and eat a lower-sodium diet. If you’re older and reading 103/72, that’s a sign your cardiovascular system is in good shape.
What to Do With a Good Reading
A single reading is a snapshot, not a diagnosis. Blood pressure fluctuates throughout the day based on activity, stress, caffeine, hydration, and even the time of day. If you got this reading at a pharmacy kiosk or with a home monitor, it’s a good sign, but the most reliable picture comes from averaging multiple readings taken on different days. Sit quietly for five minutes before measuring, keep your feet flat on the floor, and use an arm cuff rather than a wrist monitor for the most accurate result.
The habits that keep blood pressure in the normal range are the same ones that protect your heart in general: regular physical activity, a diet rich in fruits, vegetables, and whole grains, limited sodium and alcohol, maintaining a healthy weight, and managing stress. If 103/72 is your typical reading, you’re in a strong position to keep it there.