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BEIJING, March 11 (Xinhuanet) --Women who have a cup or more of coffee everyday may reduce their risk of stroke by as much as 25 percent, according to a new study in the Journal Stroke Thursday. This study, led by Swedish researcher Susanna Larsson of the Karolinska Institute in Stockholm, followed more than 34,000 Swedish women aged 49 to 83 who were free of heart disease. After 10-year of follow-up, there were 1,680 strokes, and the study found that those who drank at least one cup of coffee each day had a 22 to 25 percent lowered risk of stroke, compared with women who drank less.The study further suggested coffee can help prevent cognitive decline and can boost vision and heart health. It is also related to a reduced risk of liver cancer."We used to worry that (coffee) raises blood pressure and causes increased heart rate, but it appears to be less risky than we thought," said physician Claudette Brooks, spokesperson for the American Stroke Association. Now, exactly what it is about coffee that may lower stroke risk is unknown. But the researchers speculated that coffee might reduce inflammation, lower oxidative stress and help make the body more responsive to insulin.However, some experts kept skeptical about the real impact coffee would have on reducing the incidence of stroke."The problem with this type of study is that there are too many factors unaccounted for and association does not prove causality," Dr Larry B. Goldstein, director of the Duke Stroke Center at Duke University Medical Center said."Subjects were asked about their past coffee consumption in a questionnaire and then followed over time. There is no way to know if they changed their behavior," Goldstein added.In any case, the good news for coffee junkies is that at least drinking coffee don't increase women's risk of stroke.

WASHINGTON, March 25 (Xinhua) -- NASA's Stardust spacecraft depleted fuel and ceased operation on Thursday after a 12-year run, the U.S. space agency said Friday."This is the end of the spacecraft's operations, but really just the beginnings of what this spacecraft's accomplishments will give to planetary science," said Lindley Johnson, Stardust-NExT and Discovery program executive at NASA headquarters in Washington."The treasure-trove of science data and engineering information collected and returned by Stardust is invaluable for planning future deep space planetary missions."Artist's concept of Stardust spacecraft nearing EarthLaunched on Feb. 7, 1999, Stardust flew past the asteroid named Annefrank and traveled halfway to Jupiter to collect the particle samples from the comet Wild 2. The spacecraft returned to Earth's vicinity to drop off a sample return capsule eagerly awaited by comet scientists.NASA re-tasked the spacecraft as Stardust-NExT to perform a bonus mission and fly past comet Tempel 1, which was struck by the Deep Impact mission in 2005. The mission collected images and other scientific data to compare with images of that comet collected by the Deep Impact.The Stardust-NExT met all mission goals, and the spacecraft was extremely successful during both missions. From launch until final rocket engine burn, it travelled approximately 3.54 billion miles.After the mileage logged in space, the Stardust team knew the end was near for the spacecraft. With its fuel tank empty and final radio transmission concluded, the most traveled comet hunter will move from NASA's active mission roster to retired."This kind of feels like the end of one of those old western movies where you watch the hero ride his horse toward the distant setting sun -- and then the credits begin to roll," said Stardust-NExT project manager Tim Larson from NASA's Jet Propulsion Laboratory in Pasadena, California. "Only there's no setting sun in space."

WASHINGTON, March 24 (Xinhua) -- The U.S. Food and Drug Administration (FDA) on Thursday approved the use of Zostavax, a live attenuated virus vaccine, for the prevention of shingles in individuals 50 to 59 years of age. Zostavax is already approved for use in individuals 60 years of age and older.In the United States shingles affects approximately 200,000 healthy people between the ages of 50 and 59, per year. It is a disease caused by the varicella-zoster virus, which is a virus in the herpes family and the same virus that causes chickenpox.After an attack of chickenpox, the virus lies dormant in certain nerves in the body. For reasons that are not fully understood, the virus can reappear in the form of shingles, more commonly in people with weakened immune systems and with aging."The likelihood of shingles increases with age. The availability of Zostavax to a younger age group provides an additional opportunity to prevent this often painful and debilitating disease" said Karen Midthun, director of FDA's Center for Biologics Evaluation and Research, in a statement. ( Shingles is characterized by a rash of blisters, which generally develop in a band on one side of the body and can cause severe pain that may last for weeks, and in some people, for months or years after the episode.Approval was based on a multicenter study conducted in the United States and four other countries in approximately 22,000 people who were 50-59 years of age. Half received Zostavax and half received a placebo. Study participants were then monitored for at least one year to see if they developed shingles. Compared with placebo, Zostavax reduced the risk of developing shingles by approximately 70 percent.The most common side effects observed in the study were redness, pain and swelling at the site of injection, and headache, according to the FDA.Zostavax, manufactured by Merck & Co., was originally approved on May 26, 2006, for the prevention of shingles in individuals 60 years of age and older.

SYDNEY, May 24 (Xinhua) -- Australian soldiers and contractors in Iraq might have been exposed to blood-borne diseases such as HIV or hepatitis, as staff at Defense's main hospital unit in the Middle East failed to sterilize surgical equipment properly, local media reported on Tuesday.Fairfax newspapers reported the safety breach occurred at the AL Minhad Air Base in the United Arab Emirates over a 19 month period, from February 2009 to August 2010, but soldiers were alerted to the problem only a week ago.A Defense Department memo to troops has warned that soldiers and contractors who passed through the air base hospital near Dubai should ensure they had their blood screened, The Sydney Morning Herald reported."Personnel who underwent a surgical procedure during that period are possibly at risk of acquiring a blood-borne disease," the memo said.However, the health alert says the risk to Australian Defense Force personnel is low, as blood-borne diseases within the force are rare and personnel are vaccinated against hepatitis.The Defense Force's Surgeon-General, Major General Paul Alexander, wrote the "internal procedural issue" was dealt with by the health system and measures were put in place to prevent a repeat of the error.

SAN FRANCISCO, April 25 (Xinhua) -- Yahoo Inc. on Monday announced that it has acquired IntoNow, a startup company whose technology can let users almost instantly recognize TV content and share favorite programs with their friends.IntoNow has built a technology platform that can automatically identify live television content and any previously aired U.S.- based television programming in the past five years.It also offers an application for iPhone and other devices running Apple's iOS operating system, which can help users connect and engage with their friends around the shows they love.With the application, users can find out what their friends are watching and engage in discussion through their favorite social networks, or discover what shows they have in common with others and which of them are on air right now."Relying on social channels as a means for discovering content - - whether it's on a PC, mobile device, or TV -- is rapidly on the rise," Bill Shaughnessy, Yahoo's senior vice president of product management and product marketing, said in a statement."IntoNow's technology combines the ability to check-in to what a consumer is watching, engage in conversations, and find related content," he added.In a post on its company blog, Yahoo noted that the addition of IntoNow will enhance its video programming, and bolster its social engagement across the Yahoo network and on all screens.IntoNow, headquartered in Palo Alto in the U.S. state of California, was only launched in January 2011 and now has seven employees.Yahoo didn't disclose terms of the purchase. Technology blog TechCrunch reported that Yahoo paid between 20 million to 30 million U.S. dollars, citing sources with knowledge of the deal.