Women who stopped taking the postmenopausal hormone combination of estrogen plus progestin experienced a marked decline in breast cancer risk which was unrelated to mammography utilization change, according to a study from the Women's Health Initiative led by a Los Angeles Biomedical Research Institute (LA BioMed) investigator that was published today in The New England Journal of Medicine.
Breast cancer in the United States began to decline in 2003, after the Women's Health Initiative's initial findings that combined hormone therapy was related to higher risk of breast cancer and heart problems.
Scientists at the University of North Carolina at Chapel Hill School of Medicine say they have discovered a gene that when mutated causes obesity by dampening the body's ability to burn energy while leaving appetite unaffected.
The new research could potentially lead to new pharmacologic approaches to treating obesity in humans that do not target the brain, according to study senior author Yi Zhang, Ph.D., Howard Hughes Medical Institute investigator and professor of biochemistry and biophysics in the UNC School of Medicine. Zhang is also a member of the UNC Lineberger Comprehensive Cancer Center.
Two newly described fossil whales---a pregnant female and a male of the same species--reveal how primitive whales gave birth and provide new insights into how whales made the transition from land to sea.
An international team of researchers has discovered a new chemical compound that consists of a single element―boron. Chemical compounds are conventionally defined as substances consist of two or more elements, but the researchers found that a high pressure and temperature pure boron can assume two distinct forms that bond together to create a novel 'compound' called boron boride.
COROT has found the smallest terrestrial planet ever detected outside the Solar System. The amazing planet is less than twice the size of Earth and orbits a Sun-like star. Its temperature is so high that it is possibly covered in lava or water vapour.
About 330 exoplanets have been discovered so far, most of which are gas giants with characteristics similar to Jupiter and Neptune. The new find, COROT-Exo-7b, is different: its diameter is less than twice that of Earth and it orbits its star once every 20 hours. It is located very close to its parent star, and has a high temperature, between 1000 and 1500°C. Astronomers detected the new planet as it transited its parent star, dimming the light from the star as it passed in front of it.
Researchers at the Johns Hopkins University School of Medicine are one gene closer to understanding schizophrenia and related disorders.
Schizophrenia is a varied condition with a number of symptoms not shared by all affected. This could be one reason why it's been difficult to identify genes that contribute to the condition.
To address this, the team first rigorously separated the 73 different symptoms into nine distinct factors associated with the condition—prodromal, negative, delusion, affective, scholastic, adolescent sociability, disorganization, disability, hallucination.