Health & Lifestyle

You DON’T have to drink eight glasses of water each day

Drinking the beneficial eight glasses of water per day could also be too excessive for our precise wants, in keeping with scientists.

Given round half of our every day consumption of water comes from meals, researchers estimate we solely really want round 1.3 to 1.8 litres per day reasonably than two.

Previous research on this space trusted surveys utilized to small samples of individuals, however greater than 90 scientists the world over have now collaborated to measure water turnover utilizing a special approach.

Given around half of our daily intake of water comes from food, researchers estimate we only really need around 1.3 to 1.8 litres per day rather than two

Given round half of our every day consumption of water comes from meals, researchers estimate we solely really want round 1.3 to 1.8 litres per day reasonably than two

They surveyed 5,604 individuals aged between eight days and 96 years outdated from 23 completely different international locations.

Participants drank a measured quantity of water which had been enriched with the ingredient deuterium, which is discovered naturally within the human physique and is totally innocent.

They measured the speed at which the deuterium disappeared from the physique, which revealed how shortly water within the physique was turning over.

Analysis, printed within the journal Science, revealed these residing in scorching and humid environments and at excessive altitudes in addition to athletes, pregnant and breastfeeding ladies want extra water as their turnover was greater.

Professor John Speakman, one of many authors from the University of Aberdeen, mentioned water turnover just isn’t equal to the requirement for ingesting water.

‘Even if a male in his 20s has a water turnover of on common 4.2 litres per day, he doesn’t have to drink 4.2 litres of water every day,’ he mentioned.

‘About 15 per cent of this worth displays floor water alternate and water produced from metabolism.

‘The precise required water consumption is round 3.6 litres per day. Since most meals additionally include water, a considerable quantity of water is offered simply by consuming.

‘This research reveals that the widespread suggestion that we should always all be ingesting eight glasses of water might be too excessive for most individuals in most conditions.’

Drinking the beneficial eight glasses might be not dangerous, he defined, but in addition not wanted in most circumstances.

‘The calculations recommend {that a} typical middle-aged man would possibly have to drink round 1.6 to 1.8 litres per day and a typical girl of the identical age about 1.3 to 1.4 litres,’ he mentioned.

‘For individuals of their eighties which may fall to about 1.1 litre per day.

‘But it relies upon quite a bit on what varieties of meals they eat. If they drink plenty of soup, for instance, they would want to drink much less.’

The likes of tea, espresso, fizzy drinks and fruit juice additionally rely in the direction of the every day complete, he mentioned, however additionally they produce other issues in them which might not be wholesome.

Co-author Dale Schoeller, from the University of Wisconsin-Madison, mentioned: ‘The science has by no means supported the outdated eight glasses factor as an applicable guideline, if solely as a result of it confused complete water turnover with water from drinks and lots of your water comes from the meals you eat.

‘But this work is the perfect we have performed to date to measure how a lot water individuals really devour every day – the turnover of water into and out of the physique – and the most important components that drive water turnover.’

It comes after docs this week claimed Kung fu legend Bruce Lee might need died from ingesting an excessive amount of water.

The martial arts star and Hollywood icon died aged 32 in 1973.

Doctors dominated his loss of life to be from mind swelling, which was blamed on him taking a painkiller.

His loss of life sparked rumours he could have been assassinated by Chinese gangsters, poisoned by a lover, or the sufferer of a curse. 

Researchers reviewing the proof dominated that Bruce seemingly died of hyponatraemia.

‘In different phrases, we suggest that the kidney’s lack of ability to excrete extra water killed Bruce Lee,’ consultants wrote within the Clinical Kidney Journal.


Meals should be based on potatoes, bread, rice, pasta or other starchy carbohydrates, ideally wholegrain, according to the NHS

Meals needs to be primarily based on potatoes, bread, rice, pasta or different starchy carbohydrates, ideally wholegrain, in keeping with the NHS

• Eat at the least 5 parts of quite a lot of fruit and greens each day. All contemporary, frozen, dried and canned fruit and greens rely

• Base meals on potatoes, bread, rice, pasta or different starchy carbohydrates, ideally wholegrain

• 30 grams of fibre a day: This is identical as consuming all the following: 5 parts of fruit and greens, 2 whole-wheat cereal biscuits, 2 thick slices of wholemeal bread and enormous baked potato with the pores and skin on

• Have some dairy or dairy options (resembling soya drinks) selecting decrease fats and decrease sugar choices

• Eat some beans, pulses, fish, eggs, meat and different proteins (together with 2 parts of fish each week, one in every of which needs to be oily)

• Choose unsaturated oils and spreads and consuming in small quantities

• Drink 6-8 cups/glasses of water a day

• Adults ought to have lower than 6g of salt and 20g of saturated fats for girls or 30g for males a day

Source: NHS Eatwell Guide 

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