Your body needs salt to operate, but too much salt causes high blood pressure, which contributes to strokes, kidney disease and heart attacks. Too much salt also causes calcium loss, leading to osteoporosis. Salt causes cellular inflammation and that makes joints hurt.
The simplest way to cut salt is to stop eating processed food and fried food, both highly salted. Then stop adding extra salt to your food. It will take time to get used to less salty food, but your entire body will be healthier!