Short answers, pulled from the story.
About half of all people with high blood pressure do not know they have it. This lack of awareness often leads to discovery only after a routine health screening or when seeking care for an unrelated problem.
The first published measurement of blood pressure was made by the English clergyman Stephen Hales in 1733. This event marked a significant step in the history of understanding blood pressure before the invention of the cuff-based sphygmomanometer in 1896.
For most adults, normal blood pressure at rest falls within the range of 100 to 140 millimeters of mercury systolic and 60 to 90 millimeters of mercury diastolic. When these numbers persistently reach 130/80 or 140/90 millimeters of mercury, the condition is classified as hypertension.
The number of cases of hypertension rose to 1.4 billion by 2024. This figure represents a significant increase from 650 million cases in 1990, largely due to an increase in the number of older adults in low- and middle-income countries.
Hypertension occurs in approximately 8 to 10% of pregnancies. This condition creates a unique and dangerous landscape for both mother and child, with pre-eclampsia occurring in about 5% of pregnancies.
Chlorothiazide, the first thiazide diuretic, became available in 1958. This development marked a major breakthrough in the creation of well-tolerated orally available agents for treating high blood pressure.