What can cause hypertension?

A few things: Biggys are smoking, obesity, and add salt intake to the above - of course there are about 10 people in the country with some sort of disease that causes "primary" hypertension - ie its not their fault - now, once you have hypertension - you end up with some sort of kidney disease that sort of makes it permanent - so those people moan "but i dont eat salt"....Too late -.

Many things like: Age, obesity, high alcohol intake, genetics.

Hypertension: There are several medical causes of hypertension such as renal artery stenosis, hyperthyroidism, but most often the cause is unknown often called essential hypertension. The most important factor is that you get and keep your blood pressure controlled.

Genes age ethnicity and diet.?