Water (copy)

What percentage of the human body is made up of water?

roughly 60% - 65%

What are the functions of water?

- regulates the body’s temperature through sweating

- transports O₂, CO₂ & nutrients around the body

- removes waste products from the body through urine & faeces

- helps the kidneys flush out harmful substances from the blood

- needed in cells & tissues in the body

- prevents skin from drying out

- keeps the lining of the lungs, digestive system & mucus membranes moist

What is dehydration?

when the body is losing more water than is being replaced by drinking

What are the effects of dehydration?

- headaches

- feeling dizzy & lightheaded

- excreting urine less which is also more dark-coloured & strong smelling

- increased heartbeat & changes in blood pressure

- death in extreme cases because the blood gets thicker & therefore harder to pump around the body, causing the heart to stop

What is water intoxication?

when someone has drunk too much water

What are the effects of water intoxication?

- headaches

- nausea & vomiting

- death in extreme cases

What is the recommended intake of water?

6 - 8 glasses a day

(including drinks such as milk & fruit juice but not including water content from food)

What factors effect how much water someone needs?

weather

exercise levels

salt consumption

age

What are some sources of water?

water, drinks, fruit & vegetables