although water doesn't provide any specific nutrients yet your body need it . why?
Answers
Water in our bodies
Some facts about our internal water supply include:
Body water content is higher in men than in women and falls in both with age.
Most mature adults lose about 2.5 to 3 litres of water per day. Water loss may increase in hot weather and with prolonged exercise.
Elderly people lose about two litres per day.
An air traveller can lose approximately 1.5 litres of water during a three-hour flight.
Water loss needs to be replaced.
Importance of water
Water is needed for most body functions, including to:
maintain the health and integrity of every cell in the body
keep the bloodstream liquid enough to flow through blood vessels
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
regulate body temperature through sweating
moisten mucous membranes such as those of the lungs and mouth
lubricate and cushion joints
reduce the risk of cystitis by keeping the bladder clear of bacteria
aid digestion and prevent constipation
moisturise the skin to maintain its texture and appearance
carry nutrients and oxygen to cells
serve as a shock absorber inside the eyes, spinal cord and in the amniotic sac surrounding the foetus in pregnancy.
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Water in our food
Most foods, even those that look hard and dry, contain water. The body can get about 20 per cent of its total water requirements from solid foods alone.
The process of digesting foods also produces a small amount of water as a by-product which can be used by the body. Water sourced this way can provide around 10 per cent of the body’s water requirements.
The remaining 70 per cent or so of water required by the body must come from fluids (liquids).
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Recommended dietary fluid intake
The Australian Dietary Guidelines recommend that we drink plenty of water but how much is enough?
The amount of fluid your body needs each day depends on several factors, such as your gender, age, how active you are, whether you’re pregnant or breastfeeding, and the conditions you’re living in.
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