Human tears, blood and sweat all contain salt. Too much is not good for you though and government guidelines suggest that you should avoid consuming more than 6g per day, although it is extremely difficult to accurately calculate the exact quantity that we consume each day. The sodium in salt (sodium chloride) is required in very small quantities by the body for various chemical reactions to take place. Acting as a preservative and flavouring, it also has over 14,000 different uses, according to manufacturers today. It is thought that 75% of the salt you consume is through processed foods. Reducing consumption lowers the risk of developing high blood pressure and heart disease.

It is possible to work out how much salt we consume each day by determining the amount of salt in each food and the exact amount of the foods that you eat. This figure may be misleading though as refined foods contain sodium and various other foods contain sodium too, which sometimes cannot be measured. Reduce your intake through replacing foods that have a high sodium content with those that have a lower content.

If the packaging only contains information on the amount of sodium in the food, then it is possible to calculate how much salt is in each food product, by simply multiplying the quantity of sodium by 2.5. It is important to work this figure out as arteries and veins are used to transport blood which is pumped by the heart around the body. High blood pressure puts strains on the arteries and veins. This can damage the heart as it has to work harder to pump blood at high pressure around the body. This can lead to heart disease and increase the chance of having a heart attack.

Eventually, high blood pressure leads to the arteries becoming damaged and weaker, potentially resulting in strokes and heart attacks. Narrowing of the blood vessels (arteries, veins and capillaries) occurs as the walls of the blood vessels thicken and harden. This takes place as they are required to work harder because of the increased pressure. Reducing blood flow, this an lead to damage of the organs receiving the blood. Blood clots could result in the blood supply being cut off to a part of the body. Eating too much sodium can increase the risk of high blood pressure as it makes you retain more water. The extra water in the blood vessels creates more pressure. Kidneys remove excess sodium from the body which helps to regulate blood pressure. Excessive consumption of sodium can damage the kidneys, making them less efficient. Some people have kidneys that are more efficient at removing sodium than others. With age, the effectiveness of kidneys diminishes.

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