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By Mayo Clinic staffPrehypertension itself doesn't often have complications. If you have prehypertension, it's likely to worsen and become hypertension. The term "prehypertension" is often used by doctors to signal that it's time to begin making lifestyle changes or taking medications to stop your blood pressure from rising.
Prehypertension that leads to hypertension can damage your organs and increase the risk of heart attack, stroke and heart failure. And it tends to get worse over time. Within four years of being diagnosed with prehypertension, nearly one in three adults ages 35 to 64 and nearly one in two adults age 65 or older end up with high blood pressure, according to the American Heart Association.