Salt makes your body hold on to water. If you eat too much salt, the extra water stored in your body raises your blood pressure. So, the more salt you eat, the higher your blood pressure.

Also, eating too much salt may mean that blood pressure medicines (such as diuretics) don't work as well as they could.
may cause a slight reduction in the amount of blood reaching the heart. This may lead to angina (sharp pains in the chest when being active).

With this condition the cells in the heart don't work as well as they should because they are not receiving enough oxygen and nutrients. However, lowering blood pressure may help to alleviate some of the problems and reduce the risk of greater damage.

Body fluid balance is done by kidney. Higher the saltin the body means higher the fluid and more blood to kidney which is burden on heart.
Also with higher sodium, the blood vessels become thick and passage will reduce resulting higher blood pressure.
Itz very necessary to maintain proper balance of fluid, sodium and potassium in the body to hv a proper blood pressure.

The amount of salt you eat has a direct effect on your blood pressure.

Salt makes your body hold on to water. If you eat too much salt, the extra water stored in your body raises your blood pressure. So, the more salt you eat, the higher your blood pressure.

The higher your blood pressure, the greater the strain on your heart, arteries, kidneys and brain. This can lead to heart attacks, strokes, dementia and kidney disease.

Also, eating too much salt may mean that blood pressure medicines (such as diuretics) don't work as well as they could.

For more on how salt affects your body, brain, heart and kidneys

Salt makes your body hold on to water. If you eat too much salt, the extra water stored in your body raises your blood pressure. So, the more salt you eat, the higher your blood pressure.

I heard it affects heart