Water
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What are 3 functions of water in the body?
Acts as a lubricant for our joints and eyes Helps regulate body temperature Transportation - nutrients carried to cells and waste products carried away from cells
What will happen if we do not consume water?
Dehydration
List 4 sources of water:
Lettuce Watermelon Cucumber Ice-lollies
What are some symptoms of mild dehydration?
Dark coloured urine Thirst
What are some moderate symptoms of dehydration?
Dizziness Headache Constipation Dry mouth/lips
What are some severe symptoms of dehydration?
Weak pulse Kidney stones Seizures Confusion Low level of consciousness
Why do children need more water?
Children are more active and therefore require more
Why do infants require more water?
Not able to tell that they are thirsty
Why do older adults require more water?
Weaker sense of thirst
Why is more water required when you are taking part in physical activity?
There needs to be enough water to replace that which is lost through sweat
What are some causes of dehydration?
Illness Sweating Diabetes Alcohol
Why is illness a cause of dehydration?
Vomiting and diarrhoea leads to water loss
Why is sweating a risk of dehydration?
Excessive sweating leads to water loss
Why is alcohol a risk of dehydration?
Hangover (headache) is a sign of dehydration
Why is alcohol a risk of dehydration?
Hangover (headache) is a sign of dehydration
How is diabetes a risk of dehydration?
High levels of glucose in the blood - urinate more frequently to get rid of glucose leading to dehydration
What are some early stages of over hydration?
Nausea and vomiting Headache Changes in mental state - confusion
What is hyponatraemia?
The intoxication of water when left untreated
What is hyponatraemia?
Dangerously low levels of sodium in the blood
What are some symptoms of hyponatraemia?
Coma Seizures Muscle weakness, spasm and cramps Unconsciousness Brain can swell
Why are athletes at risk of hyponatraemia?
Low sodium levels in the blood because of excessive sweating Blood may become diluted due to consuming large amount of water - isotonic drinks should be chosen
Why are athletes at risk of hyponatraemia?
Low sodium levels in the blood because of excessive sweating Blood may become diluted due to consuming large amount of water - isotonic drinks should be chosen
State 3 valuable food sources of water:
Stew Ice-lollies Cucumber
Why does caffeine have an impact on hydration?
Mild diuretic - increases urine output