http://www.physorg.com/ en-us Physorg.com internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. Introduced in the 1960s, oral contraceptives have been used by about 80 percent of women in the United States at some point in their lives. For women without pre-existing risks for heart disease, the early formulations were generally safe, and the newer ones appear to be even safer, but all the risks and benefits are yet to be established, especially as women's lifestyles change and new forms of contraceptives become available, according to specialists in women's heart disease at Cedars-Sinai Medical Center. http://www.physorg.com/news151151902.html Medicine & Health Wed, 14 Jan 2009 10:38:22 EST news151151902 Findings from a study conducted in mice, published in the open access journal PLoS Medicine next week, provide new insights into how an effective immune response to brain tumors could potentially be brought about in humans. http://www.physorg.com/news151053609.html Medicine & Health Tue, 13 Jan 2009 07:20:09 EST news151053609