Water makes up about two-thirds of the weight of a healthy body.
Most of the chemical reactions that happen in our cells need water in order to take place. We also need water so that our blood can carry nutrients around the body and get rid of waste.
How much should we drink?
To stay healthy, it's important to replace the fluid we lose when we breathe, sweat or urinate.
The amount a person needs to drink to avoid getting deyhdrated will vary depending on a range of factors, including their size, the temperature and how active they are. However, as a guide, the Department of Health recommends that we should drink about 1.2 litres of fluid every day. This works out to be about six 200ml or eight 150ml glasses.
Most of the chemical reactions that happen in our cells need water in order to take place. We also need water so that our blood can carry nutrients around the body and get rid of waste.
How much should we drink?
To stay healthy, it's important to replace the fluid we lose when we breathe, sweat or urinate.
The amount a person needs to drink to avoid getting deyhdrated will vary depending on a range of factors, including their size, the temperature and how active they are. However, as a guide, the Department of Health recommends that we should drink about 1.2 litres of fluid every day. This works out to be about six 200ml or eight 150ml glasses.
The total amount of fluid we lose each day and need to replace is in fact greater than this – about 2.5 litres – but we get 1 litre of the fluid we need from food and the body recovers 0.3 litres from chemical reactions in our cells. The rest needs to be taken from drinks.
All drinks count, but water, milk and fruit juices are the healthiest. It is best to avoid alcoholic drinks.
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