DEAR DOCTOR K: I have high blood pressure, and my doctor advised me to cut back on salt. Can you explain how salt affects blood pressure?
DEAR READER: Blood pressure is the force of blood pushing against the walls of the arteries as the heart pumps blood. High blood pressure, also known as hypertension, is blood pressure greater than 140/90 mm Hg. High blood pressure increases your risk of stroke, heart attack, kidney damage, loss of vision and other health problems. Many studies show that blood pressure rises with higher levels of sodium in the diet.