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A table showing the normal ranges of blood pressure, and the stages of hypertension. Stage 1 is less severe than stage 3.
| Blood Pressure | Systolic (mm Hg) | Diastolic (mm Hg) |
| NORMAL RANGE | ||
| Optimal | 120 or less | 80 or less |
| Normal | Less than 130 | Less than 85 |
| High normal | 130 -139 | 85 - 89 |
| HYPERTENSION | ||
| Stage 1 | 140 - 159 | 90 - 99 |
| Stage 2 | 160 - 179 | 100 - 109 |
| Stage 3 | 180 or higher | 110 or higher |
Read more:
Hypertension on increase in South Africa
