The warning was based on an NIH study testing the drug as a preventative in Alzheimer's disease.

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Dr Fraser and the other specialists called for a standardised guidance system on assessing high risk medical devices, the introduction of rules for newer devices such as electronic medical records that are not currently scrutinised, more consistent advice on clinical testing and more information on standards and study results.

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Innovative BioDefense says a study is under way testing Zylast's effect on elementary-school absenteeism, and additional research is planned on illnesses on cruise ships and in nursing homes.

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James Nagler, a University of Idaho assistant professor of zoology who led the study, said the results of the genetic testing on the natural-spawning chinook came as a surprise.

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Researchers at Harvard simultaneously led an even bigger study testing the same two drugs and found that those on the high dose Lipitor were far less likely to have new heart attacks, strokes or heart procedures than those on Pravachol.

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Merck is setting a good example by evaluating the drug in steps, carefully assessing its effect on patients, and not proceeding toward approval before testing the effect of the drug on patient outcomes in a large study.

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Seventy French university students were recruited for the study and told they would be participating in a three-day experiment testing the effects of brightness of video games on visual perception.

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One-third of American adults plan on sending an e-card this Valentine's Day, according to a recent study by the mobile testing company SOASTA. Digital cards are most popular with men between 35 and 44, and spouses were the most common recipients.

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