Health Alert

Avoid Swimming After Exercise to Drop Weight Gain

A study conducted by Australian researchers concluded that cooling off with a dip in the pool after a good work-out may make exercisers more likely to eat than those who don’t go for a swim after exercising.  …  & see

According to the Chicago Tribune:

“Test subjects ate more after (two different types of) water immersions than they did after sitting in a chair.

Average calorie intake per person after the cold water immersion was about 489, and about 517 after the tepid water immersion. After resting in a chair, average calorie intake was about 409.

Researchers found lower levels of leptin and higher levels of ghrelin after both water immersion experiments. Following water immersion more carbs and protein were eaten as well.”

Since the study included only 10 participants, researchers suggested that further studies be done with larger sample sizes. The study was published in the Medicine & Science in Sports & Exercise.


Chicago Tribune September 25, 2010

Medicine & Science in Sports & Exercise October 2010; 42(10)

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Health Alert

Avoid Feeding Your Child Drinking Water contains excessive Manganese

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According to a report in Science Daily, a new Canadian study shows that children exposed to high concentrations of manganese in drinking water performed worse on tests of intellectual functioning than children with lower exposures.
The results were published in an article in Environmental Health Perspectives.

While manganese is naturally occurring in soil and groundwater around the world, some of Canada’s groundwater contains an unusually high amount of it, giving the researchers an opportunity to study whether excessive manganese can adversely affect human health.

“We found significant deficits in the intelligence quotient (IQ) of children exposed to higher concentration of manganese in drinking water,” said lead author Maryse Bouchard.

Yet, some areas where lower IQs were reported also registered concentrations below current guidelines. In response to the study, some of the affected municipalities have already decided to install special filtration systems.

Click to see :
*Manganese in Drinking Water Can Lower Kids’ IQs by 6 Points :

*Assessing Children’s Exposures and Risks to Drinking Water Contaminants: A Manganese Case Study  :

Science Daily September 23, 2010
Environmental Health Perspectives September 7, 2010; [Epub ahead of print]

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News on Health & Science

The Bitter Side of Artificial Sweeteners

Image via Wikipedia

Sewage treatment plants fail to remove artificial sweeteners completely from waste water. These pollutants contaminate waters downstream, and may still be present in your drinking water.

A new, robust analytical method, which simultaneously extracts and analyzes seven commonly used artificial sweeteners, demonstrated the presence of several artificial sweeteners in waste water.

Until now, only sucralose has been detected in aquatic environments. Through the use of the new method, researchers were able to show for the first time that four artificial sweeteners — acesulfame, saccharin, cyclamate, and sucralose — are present in the waters from sewage treatment plants, indicating incomplete elimination during waste water treatment.

You may also click to see:->Cancer study into artificial sweetener

Eurekalert June 17, 2009
Analytical and Bioanalytical Chemistry July 2009; 394(6):1585-94

News on Health & Science

The Dangers of Too Much Detox

A woman was left disabled after following a “detox” diet which involved drinking large quantities of water.

Although doctors stress the need to avoid dehydration by drinking enough fluids, drinking more than enough is a different matter.

The human body may be mostly water, but you can have too much of a good thing.

In the most serious cases, “water intoxication” can kill, and there is, say experts, scant evidence that drinking even slightly more water than usual can improve your health.

The current popularity of detox diets which recommend drinking many litres of water a day, and drinking even when not thirsty, could cause problems if taken to extremes, they say.

The claim is that drinking more than usual can do everything from improving your skin tone to “flushing out” toxins from your body.

However, the amount of water actually needed in a day varies from person to person, and depends on other factors such as climate, and exercise, says the British Dietetic Association.

“You shouldn’t be drinking massively over and above what you feel with comfortable with” says Ursula Arens, British Dietetic Association

Flawed industry

Ursula Arens, a dietician, said that there was a difference between normal consumption of one or two litres a day, not just in the form of water, but also from coffee, tea, and juice, and constant, ritualistic consumption of water throughout the day.

“You shouldn’t be drinking massively over and above what you feel with comfortable with, when you’re not thirsty, in a mechanical way.”

She said that the evidence supporting the whole “hydration industry” was flawed.

“If you’re a top sportsman, earning £10,000 for a single game, I can understand the need to focus intensely on your hydration, but not if you’re someone just doing a couple of lengths at the swimming pool.

“It’s just a great marketing opportunity, nothing more.”

She said that the science of detoxing was unsupported by evidence, partly because its precise effects on the body had never been defined.

She added: “The body already has perfectly good ways of getting rid of toxins – mainly in the liver, and it’s hard to see how consuming more water would affect these.”

No evidence’

Others are more scathing about the fashion for both detoxing and taking frequent sips from an ever-present bottle of mineral water.

Kidney specialist Professor Graham MacGregor said there was no evidence that either had any benefit.

He described how too much water could “overwhelm” the body’s natural mechanisms for keeping levels in balance.

“The body already has a brilliant system for doing this, but if water levels in the blood rise too high, it just can’t cope.”

If vast quantities of water are taken, salt in the blood gets too dilute, he explained. When the salt solution in the blood is weaker than the solution in the cells and organs it supplies, water passes into those cells and organs.

“People should drink when their body tells them to – when they get thirsty”…Says Prof Graham MacGregor, St George’s University of London

In extreme cases, this causes organs such as the brain to swell up, and can stop it working properly, putting the drinker in serious danger.

Professor MacGregor said: “This isn’t just a problem with water – we used to see patients who had been diagnosed with ‘water intoxication’ after drinking 20 pints of beer.”

“In normal circumstances, then people should drink when their body tells them to – when they get thirsty.

“Anything else is completely unnecessary, and will just leave you standing in the queue for the toilet.

“Detox diets are a complete con in that respect.”

You may click to see:->
->Woman left brain damaged by detox
->US woman dies after water contest

Sources: BBC NEWS:July 23, ’08

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