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ROCHESTER, Minn. — Mayo Clinic researchers have found that multiple exposures to anesthesia at a young age are associated with higher rates of attention-deficit/hyperactivity disorder (ADHD).

A new study published in the journal Pharmacoepidemiology & Drug Safety reveals that internet sites selling prescription statins directly to consumers are widespread, and that most websites advertising statins for sale to the general public contain very poor levels of information relevant to safe use of the medicine and side effects.

Extensive DNA tests by experts at the University of Warwick on two deer carcasses found in Gloucestershire have not found any indication of a big cat presence.

The National Trust asked the University to test a roe deer carcass found near Woodchester Park, Gloucestershire in early January after examination of the wounds led to speculation that it may have been killed by a big cat.

Comprehensive DNA tests have found fox DNA on the Woodchester carcass and what is expected to be fox DNA on the second deer carcass found a few miles away.

Deerfield, Ill. -- A new map pinpoints well-defined areas of the Eastern United States where humans have the highest risk of contracting Lyme disease, one of the most rapidly emerging infectious diseases in North America, according to the U.S. Centers for Disease Control and Prevention. As part of the most extensive Lyme-related field study ever undertaken, researchers found high infection risk confined mainly to the Northeast, Mid-Atlantic and Upper Midwest and low risk in the South.

Mediterranean seagrass meadows contain genetically identical clones up to 15 kilometers apart, suggesting that these organisms must be thousands to tens of thousands of years old, as reported in the Feb. 1 issue of the online journal PLoS ONE.

Share a meal with someone and you are both likely to mimic each other's behavior and take bites at the same time rather than eating at your own pace, says a study published in the Feb. 2 issue of the online journal PLoS ONE.

This behavior was found to be more prominent at the beginning of an interaction than at the end.This study, led by Roel Hermans of Radboud University Nijmegen of the Netherlands, provides some insight into the previously established phenomenon that the overall amount of food people eat is correlated with the intake of their eating companion.

In the classical model of gene expression, the genetic script encoded in our genomes is expressed in each cell in the form of RNA molecules, each consisting of a linear string of chemical "bases". It may be time to revise this traditional understanding of human gene expression, as new research suggests that circular RNA molecules, rather than the classical linear molecules, are a widespread feature of the gene expression program in every human cell. The results are published in the Feb. 1 issue of the online journal PLoS ONE.

In theory, the social networking website Facebook could be great for people with low self-esteem. Sharing is important for improving friendships. But in practice, people with low self-esteem seem to behave counter-productively, bombarding their friends with negative tidbits about their lives and making themselves less likeable, according to a new study which will be published in Psychological Science, a journal of the Association for Psychological Science.

A new study recently published in the Journal of Integrated Pest Management (JIPM) shows that from 2003 to 2008, the use of insecticide active ingredients was reduced by about 90% in University of Florida housing buildings after an Integrated Pest Management (IPM) program was implemented.

In recent years, media reports of jellyfish blooms and some scientific publications have fueled the idea that jellyfish and other gelatinous floating creatures are becoming more common and may dominate the seas in coming decades. The growing impacts of humans on the oceans, including overfishing and climate change, have been suggested as possible causes of this apparently alarming trend.

NEW YORK (Feb. 1, 2012) -- Physicians at three transplant centers have found in a pilot study that a majority of children who receive liver tissue from a parent can eventually stop using immunosuppression (anti-rejection) medications safely. These drugs, which tamp down natural immune function, have been linked to a bevy of complications, including cancer, diabetes, hypertension and kidney failure.

Today's alarmingly high rate of plant extinction necessitates an increased understanding of the world's biodiversity. An estimated 15 to 30 percent of the world's flowering plants have yet to be discovered, making efficiency an integral function of future botanical research—but how is this best accomplished? Botanist Dr. Gerrit Davidse, John S. Lehmann Curator of Grasses at the Missouri Botanical Garden in St. Louis has collaborated with eight British botanists to quantify the role of plant collectors in the discovery of plant diversity.

A recently published study by the Wildlife Conservation Society and others reveals that humpback whales on both sides of the southern Indian Ocean are singing different tunes, unusual since humpbacks in the same ocean basin usually all sing very similar songs.

Scientists at the University of California, San Francisco (UCSF) have identified nearly 200 genes in the healthy prostate tissue of men with low-grade prostate cancer that may help explain how physical activity improves survival from the disease.

The study compared the activity of some 20,000 genes in healthy prostate tissue biopsied from several dozen patients.