![]() ![]() Aid digestion and prevent constipation.Reduce the risk of urinary tract infections (UTIs), such as cystitis by keeping the bladder clear of bacteria.Moisten mucous membranes (such as those of the lungs and mouth).Regulate body temperature through sweating.Help eliminate the by-products of the body’s metabolism, excess electrolytes (for example, sodium and potassium), and urea, which is a waste product formed through the processing of dietary protein.Keep the bloodstream liquid enough to flow through blood vessels.Maintain the health and integrity of every cell in the body.Water is needed for most body functions, including to: An air traveller can lose approximately 1.5 litres of water during a three-hour flight.Elderly people lose about 2 litres per day.Water loss may increase in hot weather and with prolonged exercise. Most mature adults lose about 2.5 to 3 litres of water per day.Body water content is higher in men than in women and falls in both with age.Some facts about our internal water supply include: The amount we need depends on our body size, metabolism, the weather, the food we eat and our activity levels. Water forms the basis of blood, digestive juices, urine and perspiration, and is contained in lean muscle, fat and bones.Īs the body can’t store water, we need fresh supplies every day to make up for losses from the lungs, skin, urine and faeces (poo). The human body can last weeks without food, but only days without water. ![]()
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