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WASHINGTON, July 5 (Xinhua) -- Intake of high levels of folate, a water-soluble B vitamin that occurs naturally in food, may reduce colorectal cancer risk, according to a new study published Tuesday in Gastroenterology, the official journal of the American Gastroenterological Association (AGA) Institute. "We found that all forms and sources of folate were associated with lower risk of colorectal cancer," said lead author Victoria Stevens, of the American Cancer Society. "The strongest association was with total folate, which suggests that total folate intake is the best measure to define exposure to this nutrient because it encompasses all forms and sources."Total folate includes naturally occurring food folate and folic acid from fortified foods and dietary supplements.The research team investigated the association between folate intake and colorectal cancer among 99,523 participants in the Cancer Prevention Study II Nutrition Cohort; a total of 1,023 participants were diagnosed with colorectal cancer between 1999 and 2007, a period entirely after folate fortification began. Neither higher nor lower risk was observed during the first two years of follow-up (1999 to 2001), while associations were statistically significantly inverse for the subsequent years (2002 to 2007). The findings of this study add to the epidemiologic evidence that high folate intake reduces colorectal cancer incidence.Folates are essential nutrients needed to make components used for functions required for normal cell growth, including DNA synthesis and repair. Because these processes are critical for cell growth and differentiation, the relationship between folate intake and cancer development has been investigated in several cancers, and most extensively in colorectal cancer.

BEIJING, July 22 (Xinhuanet) -- Regulation is needed to govern rapidly expanding research in animals containing human tissue or genes, according to the Britain's Academy of Medical Sciences.Using animals with limited humanized traits is not new. Genetically engineered mice containing human DNA are already a mainstay of research into new drugs for diseases like cancer.For instance, Chinese scientists have already introduced human stem cells into goat fetuses and U.S. researchers have studied the idea of creating a mouse with human brain cells.But Martin Bobrow, a professor of medical genetics at the University of Cambridge, who led the Academy's working group, said there were three areas of particular concern."Where people begin to worry is when you get to the brain, to the germ cells, and to the sort of central features that help us recognize what is a person, like skin texture, facial shape and speech," he said.His report recommends that government should put in place a national expert body, working within the existing system for regulating animal research, to oversee such sensitive areas.British ministers said they welcomed the report and would consider its recommendations carefully.

SAN FRANCISCO, Aug. 9 (Xinhua) -- Nokia is planning to stop selling its low-end phones and smartphones in the United States, instead focusing on products using Microsoft's Windows Phone platform, U.S. media reported on Tuesday.The Finnish handset maker will end sales of its low-end Series 40 phones and smartphones based on the Symbian mobile operating system in the United States and Canada, as it needs to put all of its efforts into the Windows Phone products which are due out later this year, Chris Weber, head of Nokia's U.S. subsidiary, told technology news site All Things Digital."When we launch Windows Phones we will essentially be out of the Symbian business, the S40 business, etc.," Weber said.Staff members speak to trade visitors at the Nokia booth at the CommunicAsia expo in Singapore June 21, 2011.In February, Nokia and Microsoft announced plans to form a broad strategic partnership, under which Nokia agrees to adopt Windows Phone as its principal smartphone strategy.North America is a priority for Nokia, Weber noted, in part because it is a key market for Microsoft and also because Nokia sees it as a key to winning in the smartphone battle globally."We'll develop for North America and make the phones globally available and applicable," Weber said.In another development, technology blog Engadget and other U.S. media on Tuesday reported that Nokia will not bring N9, its first smartphone running the Linux-based mobile operating system MeeGo, to the U.S. market."After the very positive reception to the launch of the Nokia N9, the product is now being rolled out in countries around the world. At this time we will not be making it available in the U.S., " Nokia said in a statement.

WASHINGTON, Sept. 13 (Xinhua) -- The U.S. Department of Health and Human Services (HHS), with several partners, on Tuesday launched Million Hearts, an initiative that aims to prevent one million heart attacks and strokes over the next five years.The program will focus on helping Americans make healthy choices, such as preventing tobacco use and lowering consumption of salt and trans fats, and increasing use of treatments like aspirin and blood pressure and cholesterol-lowering medications.The HHS hopes that by 2017, 65 percent of high-risk patients will be taking aspirin and have their blood pressure and cholesterol under control. Currently, only 47 percent of high-risk patients take aspirin, and only 33 percent have their cholesterol and 46 percent their blood pressure under control.They also aim to cut smoking to 17 percent of Americans from 19 percent by 2017, and seek a 20 percent drop in sodium intake and a 50 percent drop in trans fat consumption."Heart disease causes one of every three American deaths and constitutes 17-percent of overall national health spending," said HHS Secretary Kathleen Sebelius in a statement. "By enlisting partners from across the health sector, Million Hearts will create a national focus on combating heart disease."

KIEV, Aug. 2 (Xinhua) -- Ukraine's regional health authority declared Tuesday a cholera epidemic in the eastern region of Donetsk had ended.All 26 people who had been treated for the disease had been discharged from hospital, the press-service of the Donetsk Regional Sanitary and Epidemiological Service said on its official website.As of this week, no new cases had been registered, the statement said.The cholera outbreak hit eastern Ukraine in late May. The disease can cause rapid dehydration and death.The outbreak was believed to be associated with fish and drinking water supplies from the Sea of Azov.