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The body obtains sodium through food and drink and loses it primarily in sweat and urine. Because these situations are more common among older people, hypernatremia is also more common among them. Below are the list of sodium uses in human body and how your body can benefits from such daily intake of sodium, be it in the form of sodium chloride (table salt), or any other form of it. Make no mistake about it: salt is essential for human health. Sodium attracts and holds water, so the sodium in the blood helps maintain the liquid portion of the blood. Vasopressin causes the kidneys to conserve water. Salt: Limit sodium intake to a maximum of 2,300 milligrams (mg) of sodium each day. Others may have dementia, which may prevent them from realizing they are thirsty or from saying so. The total amount of sodium in the body affects the amount of fluid in blood (blood volume) and around cells. Drugs: Many older people take drugs for high blood pressure, diabetes mellitus, or heart disorders that can make the body excrete excess fluid or magnify the ill effects of fluid loss. Needed for proper fluid balance, stomach acid Learn more about our commitment to Global Medical Knowledge. Role of Sodium in Human Body The human body contains approximately 1.3 g of sodium. Chloride. Sodium along with potassium helps in maintaining the right balance of fluids in the body. Physiologic Role. Diuretics are sometimes called water pills. Once into the system sodium acts as body's electrolytes and carry electric charges where necessary. Excess fluid and sodium also occur more commonly in older people because disorders that usually result in excess fluid (fluid overload)—heart failure, liver disorders, and kidney disease—are also more common in older people. Basic Elements of the Human Body Elements (% of body weight) Oxygen (65%) - component of water, oxygen gas, O2, and most organic compounds Carbon (18.6%) - found in all organic molecules Hydrogen (9.7%) - found in water and in all organic molecules Nitrogen (3.2%) - found especially in … Hyponatremia also occurs in older people who take certain types of diuretics (thiazide diuretics such as hydrochlorothiazide), particularly if the kidneys are not functioning normally. Sources. Sodium also works in concert with potassium to maintain normal water balance in the body. Sodium is often looked at as the main culprit that causes high blood pressure. It ensures a proper fluid and electrolyte or pH balance in our body, together with chlorine and potassium. Sodium is a common element that, in small quantities, is essential to life. Sodium plays a key role in normal nerve and muscle function. Distributed throughout the body, salt is especially plentiful in body fluids ranging from blood, sweat, and tears to semen and urine. Merck and Co., Inc., Kenilworth, NJ, USA (known as MSD outside of the US and Canada) is a global healthcare leader working to help the world be well. Most of the body’s sodium is located in blood and in the fluid around cells. Inability to obtain water: Some older people have physical problems that prevent them from getting something to drink when they are thirsty. Sodium helps the body keep fluids in a normal balance (see About Body Water). It has an important role in maintaining water balance within cells, and is involved in proper functioning of both nerve impulses and muscles within the body. However, a person can get high blood pressure by consuming too much sodium and not enough potassium. Sodium. Healthy kidneys maintain a consistent level of sodium in the body by adjusting the amount excreted in the urine. 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