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IRVINE, Calif. -- Early signs of Alzheimer's disease may show up in subtle changes in the diffusion of water in key brain structures, as revealed by MRI, researchers here suggested.

ROCKVILLE, Md. -- The FDA has alerted physicians to a new label warning for the anti-angiogenic colorectal-cancer drug Avastin (bevacizumab) that cites rare cases of a reversible posterior leukoencephalopathy syndrome.

NASHVILLE, Tenn. -- Many patients haven't a clue about the meaning of the dietary information in food labels, researchers here reported.

LEXINGTON, Ky. -- Diabetes is a strong predictor of acute organ failure and early death for obese or non-obese patients alike, eclipsing even obesity without diabetes, researchers here reported.

SAN FRANCISCO -- Smokers whose preferred puff is menthol-flavored may find it harder to quit, and the cool-tasting cigarettes are just as bad for the arteries and lungs as non-menthol brands, but no worse, found a long-running cohort story here.

LOS ANGELES -- Physicians prescribe medications all too often without clear instructions about how to use them and what to watch out for, according to an observational study.

ST. LOUIS -- Asking parents about adolescents' substance use and abuse is essentially a waste of time, found a research team.

TORONTO -- More than two-thirds of gastric cancer patients received inadequate lymph node assessment, jeopardizing their treatment and survival, researchers reported after an analysis of data on nearly 11,000 cases.

WASHINGTON -- Black women with advanced or recurrent endometrial cancer had significantly worse overall survival than white women who received the same therapy in four clinical trials.

ANN ARBOR, Mich. -- Bladder cancer is deadlier in blacks than whites, even when it is diagnosed early.

IOANNINA, Greece -- The aromatase inhibitors should be promoted over tamoxifen to first-line therapy for advanced breast cancer, according to findings from a meta-analysis.

KYOTO, Japan -- Short term exposure to high levels of air pollution in warm weather more than doubles the risk of hemorrhagic stroke among older patients, found researchers here.

PHILADELPHIA -- Epidemiologists have associated vitamins taken by women around the time of conception and in early pregnancy and the risk of brain cancer for their children.

LIVERPOOL, England -- Throwing a raw egg is a prank gone bad all too often, warned emergency physicians here who cited blunt ocular trauma.

BOSTON -- A topical cream protected against sun damage in red-haired mice and delayed the onset of skin cancer, according to researchers here.

RESEARCH TRIANGLE PARK, N.C. -- More aggressive management of pregnancies with preeclampsia has appeared to have a big payoff in terms of fetal survival.

BOSTON -- A form of niacin may be a novel treatment for chronic progressive multiple sclerosis, according to researchers here. In a mouse model of MS, nicotinamide- the amide form of niacin, or vitamin B3 - significantly prevented disability.

ANN ARBOR, Mich. -- Despite better detection and more curative surgery, kidney cancer mortality rates continue to rise - a "treatment disconnect" that raises thorny questions.