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WASHINGTON, Oct. 3 (Xinhua) -- Overweight or obesity may put children at three times greater risk for high blood pressure than those of normal weight, according to researchers from the Regenstrief Institute and Indiana University (IU) School of Medicine.Their study will appear in the November issue of Hypertension: Journal of the American Heart Association with advance online publication on Monday.More than 1,100 healthy Indiana school children were followed for nearly five years. The researchers found that when body mass index (BMI) reached or exceeded the 85th percentile for the age and gender of the child -- designated as being overweight -- the risk of high blood pressure nearly tripled. Obesity was defined as a BMI percentile higher than 95th. BMI is a measurement of body fat calculated from weight and height.Among study participants, 14 percent of overweight or obese children were pre-hypertensive or hypertensive, compared with 5 percent of normal weight children. These findings were consistent across age, gender and race.The average age at time of study enrollment was 10.2 years. Each child was assessed approximately eight times during the course of the study. All were healthy children and none were taking medication affecting blood pressure."Higher blood pressure in childhood sets the stage for high blood pressure in adulthood," said Regenstrief Institute Investigator Wanzhu Tu, professor of biostatistics at IU School of Medicine, who led the study. "Targeted interventions are needed for these children. Even small decreases in BMI could yield major health benefits."The researcher also found that leptin, a protein hormone which is involved in body weight regulation and metabolism, was positively associated with increased blood pressure in overweight and obese children.

BEIJING, Oct. 27 (Xinhuanet) -- A new study shows that it's not simply a lack of willpower that explains weight regain but hormones keep one insisting on eating, a persistent biological urge. As any dieter knows, it's hard to keep weight off. Weight regain is a familiar problem for dieters. The research appears in Thursday's issue of the New England Journal of Medicine. To study what drives it, Proietto and his colleagues enrolled 50 overweight or obese patients in Australia in a 10-week diet program. On average, the participants lost almost 30 pounds in the 10 weeks - faster than the standard advice of losing a pound or two per week. Even so, they gained an average of 12 pounds back over the next year. The scientists checked the blood levels of nine hormones known to influence appetite - and found that even a year after the end of the weight-loss program, six of the hormones were still out of whack. People who regain weight should not be harsh on themselves, as eating is our most basic instinct, study author Joseph Proietto of the University of Melbourne in Australia said. It's better not to gain weight than to try to lose it.

UNITED NATIONS, Nov. 18 (Xinhua) -- China on Friday voiced its hope that countries concerned "will continue to appropriately address the issue" of the alleged plot to kill Saudi Arabian ambassador to the United States "through dialogue and make joint efforts to maintain peace and stability in the Middle East and the Gulf region."The statement came as Li Baodong, Chinese permanent representative to the United Nations, was addressing the UN General Assembly to explain the Chinese position on the issue after he abstained from voting on the draft resolution on the alleged Iranian involvement in the assassination plot."China hopes countries concerned will continue to appropriately address the issue through dialogue and make joint efforts to maintain peace and stability in the Middle East and the Gulf region," he said."At present, the case is highly complicated and sensitive," Li said. "Parties still have different views over the issue. Any conclusion or action must be based on comprehensive, impartial, objective and transparent investigation and substantial evidence.""Before facts are out, parties should adopt a prudent approach, refrain from jumping to conclusions, and avoid action that may complicate and worsen the situation," he said."China abstained from the vote on the General Assembly draft resolution entitled 'Terrorist Attacks on Internationally Protected Persons'," he said. "We oppose all forms of terrorism, and always stand for compliance with international law and the basis norms governing international relations in handling state-to- state relations as well as effective protection of the safety and security of diplomatic personnel."Earlier on Friday, the UN General Assembly adopted a resolution which expressed deep concerns at the assassination plot and called on Iran "to comply with all of its obligations under international law." Iran strongly denied the allegation.Before or after the vote, countries such as Bolivia, Sudan and Venezuela said that due to a lack of solid evidence to support the allegation, the draft adoption would "create a dangerous precedent " in the international relations.

SAN FRANCISCO, Nov. 1 (Xinhua) -- Yahoo, which has been rumored to sell all or part of its business, announced on Tuesday that it is buying data-driven advertising network Interclick for around 270 million U.S. dollars.Interclick is a technology company providing data targeted solutions and optimization technologies."This investment underscores our focus on enhancing the performance of both our guaranteed and non-guaranteed display business across Yahoo and our partner sites and, combined with Yahoo's reach and advertising leadership, will deliver a powerful solution for marketers," said Ross Levinsohn, Yahoo's executive vice president for the Americas region.Some analysts said Interclick's technology could help Yahoo to grow its display advertising market share as Google and Facebook have gained on or surpassed the company in the area.But the acquisition also raised questions considering Yahoo's financial situation after it reported last month its revenue in the last quarter decreased by 5 percent year-over-year. The company is also in a chief executive officer (CEO) search following the firing of former CEO Carol Bartz in September and amidst reports of a possible takeover.Although in a financial struggle, Yahoo still has around 700 million unique monthly visitors and its news division is the biggest online news site with around 81.2 million unique visitors in August.Tech giants like Google and Microsoft are reported to be considering providing finance for the acquisition of Yahoo by another company or a group of companies.In a report on Monday, Bloomberg News reported that Yahoo is leaning toward selling Asian assets and redistributing the proceeds to shareholders, rather than selling itself to a group of buyers. Yahoo's shares fell more than 5 percent after the possibility was reported.

BEIJING, Oct. 18 (Xinhuanet) -- Some seaweeds can kill the reef-building corals around them by emitting anti-coral chemicals, a new study found.The study was published Monday in the online edition of the journal Proceedings of the U.S. National Academy of Sciences (PNAS).The researchers investigated the interactions between eight different species of seaweed and three species of coral growing in the waters nearby the Fiji Islands, and identified a class of anti-coral organic compounds known as terpenes.These chemicals, found on the surfaces of several species of seaweed, can kill the coral by suppressing its photosynthesis.The finding suggests that the living space competition with seaweeds could be a factor of the coral's worldwide decline.Plant-eating fish normally controls seaweed growth on coral reefs, but the populations of these consumers are declining by the overfishing, which eventually resulted in the seaweed's dominant position, according to the researchers.Despite overfishing, pollution and warming oceans are also the contributors to coral's worldwide decline, said Jennifer Smith, a marine ecologist at the University of California, San Diego.