Salt has always been suspected of causing health problems if too much is consumed. Recent studies have shed new light on how reducing salt intake can reduce blood pressure and ultimately the incidence of strokes and heart attacks. Salt was originally discovered by the Chinese as a way to preserve food over 5000 years ago. With the advent of refrigeration, salt consumption declined. With the rise of consumption of processed foods in Western society, salt consumption has again risen to dangerously high levels. The current average intake of sodium in the US is greater than 3400mg per day. Current recommendations are to limit total sodium to 1500mg to 2300mg per.