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VANCOUVER, British Columbia -- For some genes involved in the development of lung cancer, smoking may be forever, according to researchers here.

LOS ANGELES -- The mutation that leads to Apert's syndrome may also confer a selective advantage on the germline cells that harbor it, researchers here said.

OAKLAND, Calif. -- Untreated gestational diabetes nearly doubles the risk that offspring will be obese by kindergarten age, but treatment of maternal hyperglycemia can prevent it, said investigators here.

BALTIMORE -- The muscle-bound Mighty Mouse created by taking away one protein gets even mightier when another is added.

BOSTON -- Bright spots commonly seen on T1 magnetic resonance imaging brain scans of multiple sclerosis patients may help predict risk of disease progression, researchers here said.

NEW YORK -- Presurgical hypnosis may improve pain control during and after breast cancer surgery and cut costs as well, researchers said.

WASHINGTON -- Mississippi has exceeded the 30% obesity rate, the first time any state's population has done so, reported a health advocacy group. But 19 other states with large obese populations are not far behind.

HELSINKI -- Breast cancer may spring from the loss of cellular architecture that forms a barrier against oncogenes, investigators here reported.

SEATTLE -- Human embryonic stem cells can improve heart function after an infarction -- at least in rats, researchers said here.

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SYDNEY, Australia -- Calcium supplementation, alone or with vitamin D, reduced osteoporotic fractures in those 50 or older by 12%, researchers here reported.

MADISON, Wis. -- Viagra and other erectile dysfunction drugs may augment sexual pleasure over and above the primary indication of the drugs, investigators here suggested.

SAN FRANCISCO -- Infants who undergo bone-marrow transplantation may pay a price in a decline in communication and other developmental skills.

SAN FRANCISCO -- Older surgical patients who carry a risk factor for early-onset Alzheimer's disease are at an increased risk for postoperative delirium, researchers here reported.

WASHINGTON -- Reversing a 15-year trend, physicians and health-industry groups are contributing substantially more money to Democratic presidential campaigns than to GOP efforts.

GRAZ, Austria -- Alefacept (Amevive) plus phototherapy cleared up psoriasis more quickly than alefacept alone, reported researchers here.

COLUMBUS, Ohio -- The night shift is not so dangerous after all, found epidemiologists who studied more than 3.2 million Swedish workers to see whether working after dark really carries an increased risk of cancer.

ROCKVILLE, Md. -- The FDA called today for sunscreen labels to include a warning about skin cancer and add information about ultraviolet A (UVA) protection as well as the ultraviolet B (UVB) ratings that are now standard.