High consumption of red and processed meat over a long period of time is associated with an increased risk for a certain type of colon cancer, according to a study in the January 12 issue of JAMA.
Meat consumption has been associated with colorectal cancer in previous studies, but the strength of the association and types of meat involved have not been consistent, according to background information in the article. Few studies have evaluated long-term meat consumption or the relationship between meat consumption and the risk of rectal cancer. Clarifying the role of meat consumption and any subsequent development of colorectal cancer is important because meat is an integral component of diet in the United States and many other countries in which colorectal cancer is common. Per capita annual consumption of beef has increased in the United States since 1993, reversing a previous decrease since 1976.
Ann Chao, Ph.D., of the American Cancer Society, Atlanta, and colleagues examined the relationship between recent and long-term meat consumption and the risk of colon and rectal cancer. The study included 148,610 adults aged 50 to 74 years, residing in 21 states with population-based cancer registries, who provided information on meat consumption in 1982 and again in 1992/1993 when enrolled in the Cancer Prevention Study II (CPS II) Nutrition Cohort. Follow-up from time of enrollment in 1992/1993 through August 31, 2001, identified 1,667 incident colorectal cancers.
Anne Isenhower | EurekAlert!
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A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.
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The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.
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The efficiency of power electronic systems is not solely dependent on electrical efficiency but also on weight, for example, in mobile systems. When the weight of relevant components and devices in airplanes, for instance, is reduced, fuel savings can be achieved and correspondingly greenhouse gas emissions decreased. New materials and components based on gallium nitride (GaN) can help to reduce weight and increase the efficiency. With these new materials, power electronic switches can be operated at higher switching frequency, resulting in higher power density and lower material costs.
Researchers at the Fraunhofer Institute for Solar Energy Systems ISE together with partners have investigated how these materials can be used to make power...
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