It is said to help us prevent kidney damage, lose weight and increase concentration levels. But experts now warn that drinking eight glasses of water a day is not good for you after all – and could be harmful.
They say that scientific claims behind long-standing government guidelines are worse than ‘nonsense’.
The NHS – along with leading doctors and nutritionists – advises the public to drink about 1.2 litres (or two-and-a-half pints) of water per day.
However, a report describes the danger of dehydration as a ‘myth’ and says there is no evidence behind claims that water prevents multiple health problems.
Glasgow-based GP Margaret McCartney says the NHS Choices website’s advice that people should drink six to eight glasses a day is ‘not only nonsense, but thoroughly debunked nonsense’. She adds that the benefits of the drink are often exaggerated by ‘organisations with vested interests’ such as bottled water brands.
Writing in the British Medical Journal, Dr McCartney also points out that research shows drinking when not thirsty can impair concentration, rather than boost it, and separate evidence suggests that chemicals used for disinfection found in bottled water could be bad for your health.
Drinking excessive amounts can also lead to loss of sleep as people have to get up in the night to go to the toilet, and other studies show it can even cause kidney damage, instead of preventing it.
Worryingly, Dr McCartney also warns that taking on too much water can lead to a rare but potentially fatal condition called hyponatraemia, which sees the body’s salt levels drop and can lead to swelling of the brain.
n 2003 actor Anthony Andrews, who starred in the ITV adaptation of Brideshead Revisited, was hit by the illness after drinking too much water during rehearsals for a West End role.
Another doctor quoted in the article adds there is no basis for claims that water helps people to lose weight by suppressing their appetite. Professor Stanley Goldfarb, a metabolism expert from the University of Pennsylvania in the U.S., says: ‘The current evidence is that there really is no evidence.
‘If children drank more water rather than getting extra calories from soda, that’s good ...[but] there is no evidence that drinking water before meals reduces appetite during a meal.’
About 2.06billion litres of bottled water was drunk in Britain last year, compared with 1.42billion litres in 2000. Despite this increase we still drink three times as much tea, and five times as much beer.
below is my own businesss , if you need these goods by chance , welcome to my store, click here goods
$78 $55 $26.79 $37 $68
网页浏览总次数
2011年7月16日星期六
2011年7月11日星期一
earth gets fatter
The Earth is putting on 'weight' around its 'midriff' - and global warming is to blame.
Melting ice in Antarctica and Greenland is adding volume to the oceans and this extra water is being pulled towards the Equator, adding to the girth at the widest part of our planet, according to scientists.
Earth had been 'slimming down' following the Ice Age, which finished about 20,000 years ago.
。
During this geological period of long-term reduction in the temperature of the Earth's surface and atmosphere, the weight of ice sheets was so great that they deformed the Earth's crust and mantle, causing it to bulge at the middle.
The Earth isn't completely spherical - land at the North Pole is a number of kilometres nearer to the core of the planet than land at the Equator.
And it was believed that the rebound effect following the Ice Age would result in our planet becoming more of a perfect sphere.
The 'bulge' at the Equator had been shrinking by less than a millimetre a year, according to National Geographic.
But by looking at measurements from the Gravity Recovery and Climate Experiment (GRACE) satellites, it was found that this effect was reversing.
'There's something else going on that offsets [the shrinking of the Earth's girth],' said John Wahr, a geophysicist at the University of Colorado.
The rate of melting ice at the North and South Poles - which totals 382 billion tons of ice a year - is counteracting the 'slimming' effect.
below is my own businesss , if you need these goods by chance , welcome to my store, click here goods
$78 $55 $26.79 $37 $68
Melting ice in Antarctica and Greenland is adding volume to the oceans and this extra water is being pulled towards the Equator, adding to the girth at the widest part of our planet, according to scientists.
Earth had been 'slimming down' following the Ice Age, which finished about 20,000 years ago.
。
During this geological period of long-term reduction in the temperature of the Earth's surface and atmosphere, the weight of ice sheets was so great that they deformed the Earth's crust and mantle, causing it to bulge at the middle.
The Earth isn't completely spherical - land at the North Pole is a number of kilometres nearer to the core of the planet than land at the Equator.
And it was believed that the rebound effect following the Ice Age would result in our planet becoming more of a perfect sphere.
The 'bulge' at the Equator had been shrinking by less than a millimetre a year, according to National Geographic.
But by looking at measurements from the Gravity Recovery and Climate Experiment (GRACE) satellites, it was found that this effect was reversing.
'There's something else going on that offsets [the shrinking of the Earth's girth],' said John Wahr, a geophysicist at the University of Colorado.
The rate of melting ice at the North and South Poles - which totals 382 billion tons of ice a year - is counteracting the 'slimming' effect.
below is my own businesss , if you need these goods by chance , welcome to my store, click here goods
$78 $55 $26.79 $37 $68
Indian elephants enjoy holiday
Indian elephants from a Hindu temple in Kerala are to be sent on month-long holiday package complete with massages and bath oils as they recover from their arduous labour.
Indian elephants from a Hindu temple in Kerala are to be sent on month-long holiday package complete with massages and bath oils as they recover from their arduous labour.
The herd of 64 elephants from the Sree Krishna will be fed large quantities of food - enough for them to put on 700-800 pounds - and pampered.
During this period, 64 elephants from Kerala's Guruvayur Sree Krishna Temple in Thrissur will be fed large quantities of food and pampered.
TCR Nambiar, a temple veterinary officer, said the Indian elephants were being treated after spending months walking on tarred roads, living on palm leaves and bananas and playing guard of honour during numerous temple festivals.
Their 'spa' daily diet includes special rice, horse gram and turmeric in addition to a mix of multi-vitamins, tonics and mineral and liver extracts, all monitored by experts.
This rejuvenation treatment would also calm them down ahead of a busy work schedule in upcoming events later in the year where they are the principal attraction.
The entire elephant 'holiday' package costs the temple authorities over Rs 900,000 (£12,500) but additional funds were available should they be required for the highly revered animals.
Hindus believe that propitiating Ganesha the elephant god clears all obstacles in addition to providing its worshippers wisdom, prudence and power.
Consequently, possessing elephants is a traditional symbol of prestige for temples across southern India.
All temples, however, never purchase their elephants as they were donated by devotees as a sign of piety.
below is my own businesss , if you need these goods by chance , welcome to my store, click here goods
$78 $55 $26.79 $37 $68
Indian elephants from a Hindu temple in Kerala are to be sent on month-long holiday package complete with massages and bath oils as they recover from their arduous labour.
The herd of 64 elephants from the Sree Krishna will be fed large quantities of food - enough for them to put on 700-800 pounds - and pampered.
During this period, 64 elephants from Kerala's Guruvayur Sree Krishna Temple in Thrissur will be fed large quantities of food and pampered.
TCR Nambiar, a temple veterinary officer, said the Indian elephants were being treated after spending months walking on tarred roads, living on palm leaves and bananas and playing guard of honour during numerous temple festivals.
Their 'spa' daily diet includes special rice, horse gram and turmeric in addition to a mix of multi-vitamins, tonics and mineral and liver extracts, all monitored by experts.
This rejuvenation treatment would also calm them down ahead of a busy work schedule in upcoming events later in the year where they are the principal attraction.
The entire elephant 'holiday' package costs the temple authorities over Rs 900,000 (£12,500) but additional funds were available should they be required for the highly revered animals.
Hindus believe that propitiating Ganesha the elephant god clears all obstacles in addition to providing its worshippers wisdom, prudence and power.
Consequently, possessing elephants is a traditional symbol of prestige for temples across southern India.
All temples, however, never purchase their elephants as they were donated by devotees as a sign of piety.
below is my own businesss , if you need these goods by chance , welcome to my store, click here goods
$78 $55 $26.79 $37 $68
6 methods to keep inserts away
Ah, summer. 'Tis the season of barbecues and bare feet. Unfortunately, it's also the season of bug bites and bee stings. Be proactive this season and keep the pesky critters at bay. Here's how:
1. Avoid perfume and sweet-smelling beauty products.
Insects flock to flowers, so is it any wonder they're attracted to fragrant skin, clothes and hair as well? If you're planning to spend time outdoors, opt for fragrance-free beauty products and skip the perfume or cologne. If you don't mind smelling downright unappealing, some folks swear that eating pungent garlic or onions actually repels mosquitoes and other insects.
2. Dress down.
Unfortunately for those whose sartorial style tends toward the flamboyant, brightly colored clothes with loud patterns or flowers and sparkly or colorful jewelry attract stinging and biting insects such as bees, wasps, and mosquitoes. Avoid the annoying critters by dressing in earth tones or muted colors instead.
3. Keep your eye on your cup.
The last thing you want to do is swallow something that can sting you. Insects love sweet beverages, so be sure to look before you sip at picnics, barbecues, and other outdoor soirees.
4. Go barefoot at your own risk.
Bees hover around low-growing clover and yellow jackets actually live in the ground. Keep those tender feet safe from stingers by wearing shoes on grassy fields or lawns.
5. Watch out for hives and nests.
This may sound obvious, but beehives and wasp nests are often anything but. Insects tend to build their hives in nooks and crannies, like beneath the eave of a roof, under a gutter, or in the crook of a tree branch. Clean, garden, clip and mow with caution!
6. Remain calm.
This old chestnut bears repeating. When you do come in contact with a stinging or biting insect, making sudden movements or trying to shoo away the offender is the last thing you should do. Instead, slowly and calmly moving out of the insect's way is the safest way to avoid getting bitten or stung.
below is my own businesss , if you need these goods by chance , welcome to my store, click here goods
$78 $55 $26.79 $37 $68
1. Avoid perfume and sweet-smelling beauty products.
Insects flock to flowers, so is it any wonder they're attracted to fragrant skin, clothes and hair as well? If you're planning to spend time outdoors, opt for fragrance-free beauty products and skip the perfume or cologne. If you don't mind smelling downright unappealing, some folks swear that eating pungent garlic or onions actually repels mosquitoes and other insects.
2. Dress down.
Unfortunately for those whose sartorial style tends toward the flamboyant, brightly colored clothes with loud patterns or flowers and sparkly or colorful jewelry attract stinging and biting insects such as bees, wasps, and mosquitoes. Avoid the annoying critters by dressing in earth tones or muted colors instead.
3. Keep your eye on your cup.
The last thing you want to do is swallow something that can sting you. Insects love sweet beverages, so be sure to look before you sip at picnics, barbecues, and other outdoor soirees.
4. Go barefoot at your own risk.
Bees hover around low-growing clover and yellow jackets actually live in the ground. Keep those tender feet safe from stingers by wearing shoes on grassy fields or lawns.
5. Watch out for hives and nests.
This may sound obvious, but beehives and wasp nests are often anything but. Insects tend to build their hives in nooks and crannies, like beneath the eave of a roof, under a gutter, or in the crook of a tree branch. Clean, garden, clip and mow with caution!
6. Remain calm.
This old chestnut bears repeating. When you do come in contact with a stinging or biting insect, making sudden movements or trying to shoo away the offender is the last thing you should do. Instead, slowly and calmly moving out of the insect's way is the safest way to avoid getting bitten or stung.
below is my own businesss , if you need these goods by chance , welcome to my store, click here goods
$78 $55 $26.79 $37 $68
2011年7月10日星期日
flying car
It's been cleared to take to the skies for more than a year - but that's not much use when you're supposed to be able to drive it, too.
But now the flying car has at least been declared officially road legal.
It means the Terrafugia Transition could be in U.S. garages as early as next autumn, after two years of delays.
It may not be the world's first flying car, but its makers say it is the first to have wings that fold up automatically at the push of a button.
。
It costs $200,000 - about the same price as a Ferrari - and can be reserved online for what Terrafugia describes as a 'modest' $10,000 deposit.
The polycarbonate windscreens can withstand the impact of birds, so they won't fracture.
The administration has also granted Terrafugia permission to use heavier-grade tyres, which are not normally allowed on multi-purpose vehicles.
It's the second hurdle the Transition had to overcome before it could go on sale, after the Federal Aviation Administration ruled last year it could fly with its current weight, 110lbs over the normal legal limit for light sport aircraft category.
Terrafugia had originally hoped to deliver its first production vehicles as early as this year, but after problems with suppliers it has had to delay the release date to late 2012.
Prospective owners will need plenty of space for their new toy - it requires 1,700ft of road for take-off.
Its creators, which include former Nasa engineers, say the vehicle is easy to keep and run because it can fit into a normal domestic garage and uses regular gas.
It measures 19ft long and just 5ft 6ins wide when the wings are folded up, but they have a full span of 27ft.
It has a top speed of 65mph on the road, but that soars to 115mph in the air.
Drivers can convert it from a two-seater road car to a plane in less than 30 seconds with the touch of a button.
It doesn't have a gearstick, but on the road can be controlled with brake and accelerator pedals and a steering wheel like an ordinary car. In the air it is operated with a joystick near the steering wheel.
below is my own businesss , if you need these goods by chance , welcome to my store, click here goods
$78 $55 $26.79 $37 $68
But now the flying car has at least been declared officially road legal.
It means the Terrafugia Transition could be in U.S. garages as early as next autumn, after two years of delays.
It may not be the world's first flying car, but its makers say it is the first to have wings that fold up automatically at the push of a button.
。
It costs $200,000 - about the same price as a Ferrari - and can be reserved online for what Terrafugia describes as a 'modest' $10,000 deposit.
The polycarbonate windscreens can withstand the impact of birds, so they won't fracture.
The administration has also granted Terrafugia permission to use heavier-grade tyres, which are not normally allowed on multi-purpose vehicles.
It's the second hurdle the Transition had to overcome before it could go on sale, after the Federal Aviation Administration ruled last year it could fly with its current weight, 110lbs over the normal legal limit for light sport aircraft category.
Terrafugia had originally hoped to deliver its first production vehicles as early as this year, but after problems with suppliers it has had to delay the release date to late 2012.
Prospective owners will need plenty of space for their new toy - it requires 1,700ft of road for take-off.
Its creators, which include former Nasa engineers, say the vehicle is easy to keep and run because it can fit into a normal domestic garage and uses regular gas.
It measures 19ft long and just 5ft 6ins wide when the wings are folded up, but they have a full span of 27ft.
It has a top speed of 65mph on the road, but that soars to 115mph in the air.
Drivers can convert it from a two-seater road car to a plane in less than 30 seconds with the touch of a button.
It doesn't have a gearstick, but on the road can be controlled with brake and accelerator pedals and a steering wheel like an ordinary car. In the air it is operated with a joystick near the steering wheel.
below is my own businesss , if you need these goods by chance , welcome to my store, click here goods
$78 $55 $26.79 $37 $68
订阅:
博文 (Atom)