<s>[INST] How common is high blood pressure ? [/INST] Approximately 4 in 10 adults over age 25 have hypertension and in many countries another 1 in 5 have prehypertension. An estimated 9/10 adults living to 80 years of age will develop hypertension. One half of blood pressure related disease occurs in people with higher levels of blood pressure even within the normal range. Source: International Society of Hypertension. Link: https://ish-world.com/faq/. Field: Cardiovascular. Disease: Hypertension </s>