A blood pressure of 133/87 is classified as Stage 1 hypertension under current U.S. guidelines. Both numbers fall into this category: the top number (systolic) lands in the 130 to 139 range, and the bottom number (diastolic) falls between 80 and 89. It’s not dangerously high, but it’s above the threshold where your cardiovascular risk starts to climb meaningfully.
Where 133/87 Falls on the Scale
The 2025 guidelines from the American Heart Association and American College of Cardiology break blood pressure into four categories:
- Normal: below 120/80
- Elevated: 120 to 129 systolic, with diastolic still under 80
- 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 133/87, both your systolic and diastolic numbers independently qualify as Stage 1. If one number had landed in a higher category and the other in a lower one, the higher category would apply. In your case, they agree.
It’s worth noting that European guidelines use a slightly different framework. The European Society of Cardiology classifies 130 to 139 systolic or 85 to 89 diastolic as “high normal” rather than hypertension. Under those standards, 133/87 wouldn’t be labeled hypertension, though it would still be flagged as a reading that needs attention, particularly if you already have heart disease.
What This Reading Means for Your Health
Stage 1 hypertension doesn’t cause symptoms for most people, and a single reading of 133/87 isn’t a diagnosis on its own. Blood pressure fluctuates throughout the day based on stress, caffeine, physical activity, and even the anxiety of sitting in a doctor’s office. Between 15% and 30% of people with high readings in a clinical setting have what’s called white coat hypertension, where their numbers are elevated at the doctor’s office but normal at home.
That said, if your blood pressure consistently sits in this range, the long-term risks are real. Research following women with Stage 1 hypertension found they had roughly 58% higher rates of stroke and 69% higher rates of cardiovascular death compared to those with normal blood pressure, even after adjusting for other risk factors. These aren’t immediate dangers, but they accumulate over years and decades. The earlier you address elevated readings, the more you reduce that cumulative risk.
How to Confirm the Reading
One office reading isn’t enough to diagnose hypertension. Your provider will likely want to see multiple readings taken on separate occasions. Home monitoring is one of the most reliable ways to get an accurate picture, because it eliminates the stress response that can inflate office measurements.
Home blood pressure monitors use slightly different thresholds than office readings. The AHA considers home readings of 130/80 or above to be elevated, compared to the office cutoff of 130/80 (the difference is more relevant at lower thresholds). When you measure at home, sit quietly for five minutes first, keep your feet flat on the floor, and take two or three readings a minute apart. Morning and evening readings over a week give the clearest pattern.
When Medication Enters the Picture
Not everyone with Stage 1 hypertension needs medication right away. The current guidelines use a tiered approach based on your overall cardiovascular risk.
If you already have heart disease, a history of stroke, diabetes, or chronic kidney disease, medication is typically recommended once your average blood pressure is at or above 130/80. The same applies if your estimated 10-year cardiovascular risk is 7.5% or higher (a calculation your doctor can run using factors like age, cholesterol, and smoking status).
If your 10-year risk is lower than 7.5%, the recommended first step is three to six months of lifestyle changes. If your blood pressure stays at 130/80 or above after that trial period, medication becomes the next recommendation. This graduated approach reflects the fact that for many people in the Stage 1 range, lifestyle adjustments alone can bring numbers back down.
How Much Lifestyle Changes Can Lower Your Numbers
For a reading of 133/87, lifestyle changes have a realistic shot at getting you back below the hypertension threshold, and possibly into the normal range. The most studied interventions are dietary changes, sodium reduction, exercise, and weight management.
The DASH diet (rich in fruits, vegetables, whole grains, and low-fat dairy, while limiting saturated fat and red meat) combined with reducing sodium intake produces some of the most dramatic results. In people with mildly elevated blood pressure, cutting sodium while following the DASH diet lowered systolic pressure by about 5 to 10 points compared to a typical high-sodium diet. For people starting at higher baselines, the reductions were even more striking, up to 20 points in some cases. At 133 systolic, even a 5-point drop would bring you below the Stage 1 threshold.
Other changes that reliably lower blood pressure include regular aerobic exercise (even brisk walking for 30 minutes most days), losing weight if you’re carrying extra pounds, limiting alcohol to one drink per day or fewer, and managing stress. Each of these individually can shave a few points off your reading, and the effects stack. Someone who combines several of these changes can see reductions comparable to what a single medication achieves.
What the Two Numbers Tell You Separately
Your systolic reading (133) reflects the pressure in your arteries when your heart beats. Your diastolic reading (87) reflects the pressure between beats, when your heart is resting. Both matter, though systolic pressure tends to get more attention because it’s a stronger predictor of heart attack and stroke in people over 50.
A diastolic reading of 87 is mildly elevated but not in a range that typically causes symptoms. Symptoms like headaches, nosebleeds, or shortness of breath generally don’t appear unless diastolic pressure climbs to 120 or higher, which would signal a medical emergency. At 87, the concern is the gradual wear on your blood vessels over time rather than any immediate danger.
Having both numbers elevated in the same category, as with 133/87, simply confirms the pattern. It’s not necessarily worse than having just one number elevated, but it does make it less likely that the reading is a fluke.