Science

Researchers Find Breast Cancer Gene, Spurring Hope for New Treatments Researchers discovered a gene involved in the spread of breast cancer, which may lead to new treatments for a disease that kills about 1 in 35 women.

Sex Hormone May Increase Risk of Deadly Ovarian Cancer in Obese Women A sex hormone stimulated by excess body fat may trigger deadly ovarian cancer, a new study found.

Leptin, Panned as Weight Loss Drug, Revived as Potential Obesity Treatment Leptin, the appetite-suppressing drug that flunked tests for weight loss in people, is resurrecting hope with a study showing it worked better in mice when combined with other medicines.

Teen Sex, Drugs, Violence Plaster 18-Year-olds' MySpace Networking Pages Sex, drugs and violence mark the majority of MySpace.com postings by 18-year-olds, a study found, potentially hurting job prospects and drawing sexual predators.

Argentina's First Yellow Fever Deaths Since 1966 Spur Mass Vaccination Argentina is mass-vaccinating people against yellow fever amid concern its first deadly outbreak of the disease in 42 years may spread from jungle areas to cities.

Specialty Medicines Spurred Rebound in U.S. Drug Approvals by FDA in 2008 Medicines for rare disorders and diagnosing diseases contributed to a jump in U.S. drug approvals last year from a quarter-century low in 2007.

Mysterious Chronic Fatigue Linked to Abuse in Childhood, Researchers Find Chronic fatigue syndrome, an ailment of unknown cause, may be tied to childhood abuse, according to psychologists at Emory University in Atlanta.

Tamiflu-Resistant Influenza Linked With Pneumonia, Norwegian Doctors Say A drug-resistant influenza strain that has spread globally this year needs further study to gauge its virulence, according to doctors in Norway who found the bug was linked with patients suffering more severe symptoms.

Pneumonia More Likely to Spread at Clinics, Nursing Homes Than Hospitals Patients who came down with pneumonia in hospitals stayed in them longer, had more complications and were more likely to die than those who caught the disease in their communities, a study found.

Diabetes Dims 50-Year-Olds' Decision Making if They Got Disease as Adults People who develop diabetes as adults may experience a slowdown in mental abilities as early as their 50s, a new study of the increasingly prevalent disease found.