A blood pressure of 104/75 mmHg is a good reading. It falls squarely within the “normal” category, which the American Heart Association defines as below 120/80 mmHg. Both your systolic number (104) and your diastolic number (75) are comfortably in the healthy range, and this reading is associated with the lowest cardiovascular risk.
Where 104/75 Falls on the Scale
The current blood pressure classification system, updated in the 2025 AHA/ACC guidelines, uses four categories for adults:
- 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
At 104/75, you’re well below every threshold for concern. These categories apply to all adults regardless of age. The guidelines eliminated age-specific recommendations, so 104/75 is considered normal whether you’re 25 or 70.
Why This Reading Is Particularly Favorable
Your diastolic pressure of 75 sits in what researchers consider a sweet spot. A large analysis from the Systolic Blood Pressure Intervention Trial found that people with diastolic readings between 60 and 79 mmHg had the lowest rate of major cardiovascular events: 1.9 cases per 100 person-years. Those whose diastolic pressure dropped below 60 had a 32% higher risk of heart attack, stroke, or cardiovascular death. European cardiology guidelines recommend keeping diastolic pressure in the 70 to 80 range for all risk levels, and your 75 lands right in the middle.
Your systolic pressure of 104 is also well positioned. It’s low enough to avoid any strain on blood vessel walls, but not so low that it typically causes symptoms. There’s no formal cutoff number for “too low” in the way there is for high blood pressure. Instead, low blood pressure is defined by whether it causes problems, not by hitting a specific number.
Could 104/75 Be Too Low?
For most people, no. But blood pressure that’s technically normal on paper can still feel too low for a given individual. The key is whether you’re experiencing symptoms. Signs that your blood pressure may be too low for you include dizziness or lightheadedness, blurred or fading vision, fainting, fatigue, trouble concentrating, or an upset stomach.
A sudden drop matters more than a consistently low number. A change of just 20 mmHg, for example going from 124 to 104, can make you feel dizzy or faint even though 104 is a perfectly normal reading in isolation. This often happens when you stand up quickly, get dehydrated, or skip a meal. If 104/75 is your usual baseline and you feel fine, there’s nothing to worry about.
Making Sure Your Reading Is Accurate
A single blood pressure reading is a snapshot, not a diagnosis. Blood pressure naturally fluctuates throughout the day, running higher during waking hours and lower at night. What you ate, drank, or did in the 30 minutes before the reading can shift the numbers significantly. Caffeine, alcohol, exercise, and even a full bladder can all push readings higher.
To get a reliable picture, the CDC recommends taking at least two readings one to two minutes apart, at the same time each day. Sit in a comfortable chair with your back supported for at least five minutes before measuring. Keep both feet flat on the floor, legs uncrossed, and rest your arm on a table at chest height. The cuff should sit against bare skin, not over clothing. Don’t talk during the reading.
If you’re monitoring at home, keep a log over several days. That pattern is far more meaningful than any individual number. Nervousness at a doctor’s office (sometimes called white coat syndrome) can inflate readings, while poor positioning at home can skew them in either direction.
Maintaining Healthy Blood Pressure Long Term
Having normal blood pressure now doesn’t guarantee it stays that way. Blood pressure tends to creep upward over the years, particularly the systolic number. The habits that help most are the ones you’ve probably heard before: regular physical activity, a diet rich in fruits, vegetables, and whole grains, limited sodium intake, maintaining a healthy weight, and moderating alcohol. These aren’t just preventive measures for people with high readings. They’re what keeps a good reading like 104/75 from drifting into the elevated or hypertensive range over the next decade.
Tracking your numbers once or twice a year gives you an early signal if things start to shift, long before you’d ever notice symptoms.