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Two recent studies find that dehydration not only affects your body but your mood as well. Mild dehydration is defined as a 1.5 percent loss in normal water volume in the body. And two recent studies with men and women find that, beyond affecting your body, mild dehydration can impact your mood. Researchers evaluated 51 healthy men and women three times in three months. All the subjects walked on a treadmill to induce dehydration. The researchers then tested the subjects' alertness, concentration, reaction time, learning, memory, reasoning and mood level.
They found that dehydration in men caused difficulty in memory and alertness. In women dehydration caused little reduction in cognitive ability, but did cause significant fatigue, tension and anxiety. Such changes in mood occurred regardless if the subject was exercising or at rest.
The results of the study with male participants were published in the British Journal of Nutrition and the women's results were in the Journal of Nutrition, an American publication.So you don't need to be performing in a triathlon. Even if you're deskbound--and especially if you're a woman--your body and your brain might need a shot of H2O.
Danone (Evian and
Volvic water brands) is in talks to sell bottled water assets to Japan’s
Suntory. The French company is seeking to reach an agreement as soon as
possible. Suntory may seek to purchase only the water operations in Asia,
according to insiders.
Bottled water sales on a comparable basis gained 7.9% in the quarter, led by Latin America and Asia, Danone said. Danone officials met with Kirin, Asahi Breweries and Suntory last November to gauge their interest in part or all of the water business. The talks with Suntory have advanced the most, according to a source close to the negotiations.
People who drink less than a couple of glasses of water per day are more likely to develop abnormally high blood sugar, a study suggests. When someone's blood sugar levels are high, but not high enough to fit the definition of diabetes, doctors often consider that person to have "pre-diabetes," meaning that they are at risk of developing the disease. In the study, adults who drank only half a liter - about 2 glasses - or less each day were more likely to develop blood sugar levels in the pre-diabetes range, versus people who drank more water. The findings shoe a correlation between water in-take and blood sugar, but do not prove cause and effect, said senior researcher Lise Bankir of the French national research institute INSERM. Still, it is plausible based on biology, Bankir said.
Vasopressin, also known as the antidiuretic hormone, helps regulate the body's water retention. When we are dehydrated, vasopressin levels go up, causing the kidneys to conserve water. There are vasopressin receptors in the liver, the organ responsible for producing glucose (sugar) in the body, Bankir explained. One study found that injecting healthy people with vasopressin caused a temporary spike in blood sugar.
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As simple as it sounds, a one-liter plastic bottle filled with purified water and some bleach could serve as a light bulb for some of the millions of people who live without electricity. Originally developed by MIT students, the "solar bottle bulb" is now being distributed by the MyShelter Foundation to homes throughout the Philippines. The foundation’s goal is to use this alternative source of daylight to brighten one million homes in the country by 2012. In order to make the water bottles "light up," holes are cut in the metal roofs of homes and a bottle is placed and sealed into each hole so that its lower half emerges from the ceiling. The clear water disperses the light in all directions through refraction, which can provide a luminosity that is equivalent to a 55-watt electric light bulb, according to the MyShelter Foundation. The bleach prevents mold growth so that the bulbs can last for up to five years. Although the solar bottle bulb only works during the day, it can meet the needs of many of the people in Manila, Philippines, and other cities, where the homes are so close together that very little sunlight can enter through the windows. As a result, the homes are dark even during the day.
The solar bottle bulbs’ advantages include sustainability and safety; compared with candles or faulty electrical connections, they aren’t a fire hazard. The bulbs are also inexpensive to make and install, and of course have no operating costs while in use.
The MyShelter Foundation is promoting the solar bottle bulbs as the Isang Litrong Liwanag ("A Liter of Light") project. In Manila, the city government paid for the bulbs while the foundation is training residents on how to make and install them.
More information:
http://isanglitrongliwanag.org
via:
Treehugger
© 2011 PhysOrg.com
Americans consumed more bottled water per capita in 2010 - 28.3 gallons vs. 27.6 in 2009.
Total Sales of Bottled Water through May 15, 2011 were up nearly 3%.
Private Labeled Bottled Water Sales lead all categories and were up 4.82% though May 15, 2011.
Source: Beverage Marketing
The International Bottled Water Association (IBWA) today is providing consumers with tips for bottled water and drinking water supplies at the opening of the 2011 Atlantic Ocean hurricane season. IBWA draws upon the many lesson learned from previous hurricanes and disasters to underscore the critical need for clean drinking water for affected communities.
The bottled water industry has, over the years, provided hundreds of millions of servings of bottled water to victims and rescue personnel during natural disasters (e.g., floods, tornados, wild fires, hurricanes, boil alerts) and other emergency situations. IBWA members also delivered tanker trucks of fresh water and 5-gallon water cooler bottles to those in need.
IBWA works with the U.S. Department of Homeland Security’s (DHS) and assists in producing the annual National Preparedness Month activities. This national recognition, which is held each September, encourages all Americans to prepare for emergencies in their homes, businesses and communities.
According to DHS guidelines, all households should maintain an emergency supply of water -- at least one gallon per person per day for three days -- for drinking, cooking, and personal hygiene -- in the event that public drinking water service is interrupted or if its safety is compromised during an emergency event.
IBWA provides the following tips to consumers to help ensure the safety and quality of emergency water supplies:
The International Bottled Water Association recognizes that consumers must have access to safe, clean drinking water during emergency situations. Smart planning and preparations for one’s water needs can make a big difference in a person’s health and well being and their ability to recover from an emergency situation.
Water Bottles Go High Tech
Water bottles are just a vessel for
holding water, right? No matter if they are made out of PET, Glass,
Stainless Steel, etc., they are not supposed to talk with us.
Heard of
Smartwater? Now you
will here about smart bottles. A company named Hydrocoach has introduced a
high tech bottle that tells you how much water you should drink, then
digitally monitors your progress all day long.
The bottle prompts you to keep sipping until your
personal goal is reached!
I think that is pretty cool because drinking enough
water is essential for digestion, circulation, and regulating body
temperature, as well as assist with weight loss. Believe it or not, there
are many people who suffer from symtems of dehydration and dont know it
until it is too late. So drink up!
Hydrofracking Waste-water
Regulation Lax
The American landscape is
dotted with hundreds of thousands of new wells and drilling rigs, as the
country scrambles to tap into this century’s gold rush — for natural gas.
But the relatively new
drilling method — known as high-volume horizontal hydraulic fracturing, or
hydrofracking — carries significant environmental risks. It involves
injecting huge amounts of water, mixed with sand and chemicals, at high
pressures to break up rock formations and release the gas.
With hydrofracking, a well
can produce over a million gallons of wastewater that is often laced with
highly corrosive salts, carcinogens like benzene and radioactive elements
like radium, all of which can occur naturally thousands of feet underground.
Other carcinogenic materials can be added to the wastewater by the chemicals
used in the hydrofracking itself.
While the existence of the
toxic wastes has been reported, thousands of internal documents obtained by
The New York Times from the Environmental Protection Agency, state
regulators and drillers show that the dangers to the environment and health
are greater than previously understood.
The documents reveal that
the wastewater, which is sometimes hauled to sewage plants not designed to
treat it and then discharged into rivers that supply drinking water,
contains radioactivity at levels higher than previously known, and far
higher than the level that federal regulators say is safe for these
treatment plants to handle.
The risks are particularly
severe in Pennsylvania, which has seen a sharp increase in drilling, with
roughly 71,000 active gas wells, up from about 36,000 in 2000. The level of
radioactivity in the wastewater has sometimes been hundreds or even
thousands of times the maximum allowed by the federal standard for drinking
water. While people clearly do not drink drilling wastewater, the reason to
use the drinking-water standard for comparison is that there is no
comprehensive federal standard for what constitutes safe levels of
radioactivity in drilling wastewater.
And recent incidents
underscore the dangers. In late 2008, drilling and coal-mine waste released
during a drought so overwhelmed the Monongahela river that local officials
advised people in the Pittsburgh area to drink bottled water. E.P.A.
officials described the incident in an internal memorandum as “one of the
largest failures in U.S. history to supply clean drinking water to the
public.”
A new analysis showing the presence of a probable carcinogen in the tap water of 31 cities across the country, including the District and Bethesda, has raised questions about what consumers in those communities can do to reduce their exposure.
The chemical, hexavalent chromium, got public attention via the 2000 film "Erin Brockovich" and has been deemed a "probable carcinogen" by the National Toxicology Program, part of the National Institutes of Health.
Although basic water filters such as those made by Brita and PUR do not remove hexavalent chromium, several reverse-osmosis systems designed for home use can take the chemical out of water.
The analysis, released Monday by the Environmental Working Group, is the first nationwide look at hexavalent chromium in drinking water to be made public. The advocacy group sampled tap water from 35 cities and detected hexavalent chromium in 31 of those communities. Of those, 25 had levels that were higher than a health goal proposed last year by the state of California.
The federal government has not set a limit for hexavalent chromium in drinking water but is reexamining the chemical to decide whether it should impose such restrictions.
Last year, California proposed a "public health goal" for a safe level of hexavalent chromium in drinking water: 0.06 parts per billion. If the state sets a limit, it would be the first in the nation.
Hexavalent chromium was a commonly used industrial chemical until the early 1990s. It is still used in some industries, such as chrome plating and the manufacturing of plastics and dyes. The chemical can also leach into groundwater from natural ores.
Public awareness about the possible health effects of hexavalent chromium was heightened when residents of Hinkley, Calif., accused Pacific Gas & Electric of leaking the chemical into groundwater for more than 30 years. The company paid $333 million in damages in 1996 and pledged to clean up the contamination. The case was the basis for the movie "Erin Brockovich," which starred Julia Roberts.
But a recent California study found that cancer levels in Hinkley are not elevated. The California Cancer Registry's third study on the town, released this month, found that cancer rates remained unremarkable from 1988 to 2008. The state survey did not explain why any individual in Hinkley got cancer. State epidemiologist John W. Morgan has said it is still important that PG&E clean up the groundwater contamination, which continues to migrate despite efforts to contain it.
PG&E has been giving affected residents bottled water and has sent letters to about 100 property owners expressing interest in buying their property. The company has said it will continue those efforts despite the recent cancer study.
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