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Beijing, Sept. 6 (Xinhua) -- A sperm donation scandal disclosed recently has aroused growing concern in the United States.According to the New York Times' report, Ryan Kramer, the son of a donor, found that he has more than 150 half-siblings - they are all the children of the same donor."It's wild when we see them all together - they all look alike," said Cynthia Daily, mother of Kramer.As more women choose to have children on their own, the demand for sperm donors has surged.Some sperm banks are earning huge profits by allowing too many mothers to receive sperms from the same popular donors, according to the report.And this trend will lead to risks: rare genetic diseases could be spread more widely, and the children of the same donor could meet and, unbeknownst to them, commit incest, medical experts warned.Parents and donors are calling for a tighter regulation so that donor children can know more about their donors, and the number of kids from each donor can be limited.

LOS ANGELES, July 28 (Xinhua) -- Mainly due to rampant obesity, Americans' life expectancy is one-and-a-half-year shorter than that of Western Europeans on the average, according to a new study published on Thursday.But 40 years ago, Americans could expect to live slightly longer than Europeans, said the study jointly conducted by researchers from University of Southern California (USC), the Harvard School of Public Health and the RAND Corp., a non-profit think tank.In addition to Western Europeans, Americans also die younger than the residents of most other developed nations, according to the study appearing in the July issue of Social Science & Medicine.The life-expectancy disparity, which begins around the age of 50, stems from higher levels of middle-age obesity and obesity-related chronic diseases, such as hypertension and diabetes, said the study.In the first half of the last century, average life expectancy increased by saving more babies, said author Dana Goldman, director of the Schaeffer Center for Health Policy and Economics at the USC."But now it is reduction in mortality among the elderly, rather than the young, that propels increases in life expectancy," he said. "The question is whether 'being American' is an independent mortality risk factor."If 50-year-old U.S. adults could be as healthy as Europeans, it could save Medicare and Medicaid 632 billion dollars by 2050, the study said.Though the transition to better health initially raises expenditures, the researchers estimate that by 2050 healthcare savings from health improvements among the middle age could total more than 1.1 trillion dollars."The international life expectancy gap appears much easier to explain than gaps within countries: there is no American-specific effect on longevity beyond differences in disease at age 50," said Darius Lakdawalla, an associate professor in the USC School of Policy, Planning and Development.

UNITED NATIONS, June 9 (Xinhua) -- The message delivered by scores of speakers on the second day of the three-day UN High Level Meeting on AIDS on Thursday, marking 30 years of the pandemic, was that most of their countries were making progress but increased efforts had to be made with greater cooperation needed among nations.In the case of developing states, gratitude was expressed for past help but more aid was needed to continue the battle.Despite the similarities in content, the chair, UN General Assembly President Joseph Deiss, repeatedly appealed to speakers to limit their speeches to their allotted five minutes, warning at the halfway point that if everyone was taking an extra few minutes, a fourth day would have to be added to the agenda.One of the briefest addresses, well under time, was delivered by Yin Li, China's vice health minister, which he referred to as " a responsible developing country."Briefly listing some of the steps taken, the Chinese vice minister focused on achieving the UNAIDS goal of the three Zs -- " Zero new HIV infections, zero discrimination and zero AIDS-related deaths.""We should unite to generate a joint force, irrespective of gender, skin color, nationality, beliefs, values and ideology. Developed countries should further provide developing countries with unselfish, unconditional financial and technical support," he said. "Developing countries should place AIDS control in a position as important as economic development and actively explore prevention and treatment mode consistent with national conditions. ""Second, given the increasing disease burden of AIDS," he said, "the private sector and relevant organizations should shoulder more social responsibility."On the one hand efforts should be made to mobilize more resources in AIDS to better implement prevention, treatment and care measures; on the other hand, multinational drug manufacturers should reduce by a large margin the price of drugs, testing equipment and reagents through technology transfer, contract manufacturing and reduction of monopoly profits in order to promote universal access to treatment services," Yin added.Since AIDS prevention and treatment in China is an important component in the global fight against AIDS, he said, "Progress made in China is a positive contribution globally."The High Level Meeting on AIDS is taking place 10 years after the UN Special Session on HIV/AIDS and five years since signing of the Political Declaration in which UN Member States committed to universal access to HIV prevention, treatment, care and support.Norway's minister of the environment and international development, Erik Solheim, said, "Prevention and treatment must be mutually reinforcing and better treatment regiments need to be made available."He called for development of innovative methods for prevention.While Solheim said "remarkable" results had been achieved in the last three decades, there still was a need for a " transformation of current working methods."AIDS must be taken out of isolation into an "integrated approach," noting that HIV response has to be connected with UN Secretary-General Ban Ki-moon's Global Strategy for Women's and Children's Health and "HIV and AIDS programs should be mainstreamed into national health systems, he said.Solheim said that the social, political and economic empowerment of women is crucial and he welcomed the establishment of the new UN agency UN Women."The burden of HIV in the world is reduced but major challenges remain," the minister said. "Our experience is that the approaches that work well on HIV, are those based on rights and on promoting the dignity of people."Celsius Waterberg, the health minister of Suriname, said the nation "is among the few countries in the Caribbean where the incidence of HIV infection has decreased by more than 25 percent."The strides forward are due to a national multi-sectoral HIV Council, setting up structures to provide leadership in quality of services and training in revised treatment protocols, he said.Suriname, the smallest sovereign state in South America, on the northeast coast of the continent, also introduced combined prevention tools and implemented pilot projects successful in mobilizing men for circumcision as an additional preventive measure, Waterberg said.Challenges that need to be overcome include harmful traditions and customs, misconceptions and adverse beliefs, language barriers in a multilingual society and vulnerability of small communities and individuals due to HIV-related stigma, gender inequalities and poverty, he said.Victor Makwenge Kaput, health minister of the Democratic Republic of Congo, said that although the government had made progress in supporting individuals living with HIV and protecting the uninfected, it continues to face many challenges. Indeed, HIV prevalence stood at 3.7 percent for pregnant women and 3 percent for the general population, he said.AIDS' victims increasingly are women and youth with infections particularly concentrated along the Congo River, the minister said. Today, 1.2 million citizens are infected. Total population in the third largest country in Africa, about the size of Western Europe, is 71 million.He said women account for roughly 71,000 new infections each year and the government is now paying particular attention to mother-to-child transmission.Kaput said his long war-torn nation is committed to the global vision of zero infections and appealed for support to curb the spread of HIV.

BEIJING, June 14 (Xinhuanet) -- Having a pet at home during the first year of a child may halve the risk of developing allergic to them later in life, a new study suggests.The study was published in the journal Clinical & Experimental Allergy.Researchers from Henry Ford Hospital in Detroit assessed 566 boys and girls who were followed from birth until age 18. They found that boys who had dogs and teens who had cats during their first year of life had 50 percent less risk of developing pet allergies later.Lead researcher Ganesha Wegienka said: "This research provides further evidence that experiences in the first year of life are associated with health status later in life, and that early life pet exposure does not put most children at risk of being sensitised to these animals later in life."The researchers said that exposure to animals at other times in childhood didn't appear to be as significant as the first year.However, Wegienka cautioned that this study doesn't prove a cause-and-effect relationship between having a pet and avoiding allergies, just an association between those two factors."We don't want to say that everyone should go out and get a dog or cat to prevent allergies," she said."More research is needed, though we think this is a worthwhile avenue to pursue."

SAN FRANCISCO, Sept. 9 (Xinhua) -- AOL's chief executive officer (CEO) Tim Armstrong has reached out to Yahoo for talks of a merger of the two companies, U.S. media reported on Friday.Armstrong is discussing options for a combination aimed at strengthening the two Internet companies, Bloomberg quoted two people who are familiar with the matter as saying.The report said that the AOL CEO had been interested in a merger with Yahoo last year but was rejected while Carol Bartz served as Yahoo CEO, who was ousted by Yahoo's board on Tuesday.Reconsidering the option after Bartz's departure, Armstrong has talked with private equity firms and investment bankers from Allen & Co. working with Yahoo.Under one scenario being considered, Yahoo would acquire AOL and Armstrong would become CEO of the combined company, said the source.Both Yahoo and AOL are suffering from declining revenues, struggling to compete against companies like Google and Facebook. Some analysts said that the merger could not provide a long-term solution to the problems the two companies face after they failed to keep up with Internet trends.