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ORLANDO, Florida (Reuters) – Drugs that block a cell repair enzyme known as PARP show promise as treatments for some of the most aggressive and difficult-to-treat forms of breast cancer, according to new research.

ORLANDO, Florida (Reuters) – Use of menopausal hormone-replacement therapy increases the risk of death from lung cancer by 60 percent after five years, U.S. researchers reported on Saturday.

COMBAT OUTPOST COBRA, Iraq (Reuters) – Experts say the risk of soldiers suffering Post Traumatic Stress Disorder (PTSD) goes up substantially on their third tour of duty. Sergeant Joseph Huiet is on his sixth.

WASHINGTON (Reuters) – Democratic plans for revamping U.S. healthcare are taking shape, with Senator Edward Kennedy soon to announce a proposal which could form the core of the nation’s new health system.

NEW YORK (Reuters Health) – Direct injection of drugs into the arteries feeding the liver coupled with standard chemotherapy can make inoperable liver cancers suitable for surgery in about half of patients, new research shows.

NEW YORK (Reuters Health) – When primary melanoma is diagnosed, high blood levels of the protein HU177, associated with angiogenesis, the growth of tumor blood vessels, identifies a subset of patients with poor prognosis, according to research to be presented Monday at the American Society of Clinical Oncology’s annual meeting in Orlando.

NEW YORK (Reuters Health) – New research suggests that low vitamin D levels in the body are associated with thinking or “cognitive” impairments in older men, but whether vitamin D supplements can help is not yet known.

NEW YORK (Reuters Health) – A blow to the head can affect a child’s mental functioning for years afterward, depending on how severely the brain is affected, a new research review shows.

NEW YORK (Reuters Health) – Teenagers who regularly use the bathroom scale may be more likely than their peers to take healthy measures to control their weight, a new study suggests.

NEW YORK (Reuters Health) – Pregnant women who are deficient in vitamin D may be at increased risk for developing bacterial vaginosis, a vaginal infection that may have harmful effects on the pregnancy, according to a report in The Journal of Nutrition.