The electrolyte sodium helps regulate the amount of fluid present in the cells and blood. Humans need adequate amounts of sodium to maintain normal muscle and nerve function and to keep the body's acid-base balance. Adults need around 1.2-1.5 grams of sodium per day to maintain optimum health. However, many people consume far more than they need in salty foods and snacks and by adding extra salt to their food. Experts do not recommend eating more than 5g of salt per day.

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