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Surely your bathroom is fungus-free once you've wiped the mold off the tiles? Not according to a new study. Scientists report that almost one in five rooms studied with no visible mold was in fact "highly contaminated" by fungus which could aggravate conditions such as asthma.

For the first time ever, an extensive genome-wide search has been undertaken to find the genes linked to osteoporosis and fracture. Five regions of interest have been identified that appear to warrant further scientific investigation.

Taking aspirin on a daily basis may lower women's risk of a particular type of breast cancer. In a new large study, aspirin use was linked to a small reduction in estrogen receptor-positive breast cancers. However, unlike in some previous research, aspirin and related painkillers were not found to reduce the total risk of breast cancer.

Nearly one in three children admitted to pediatric intensive care will experience delusions or hallucinations, which put them at higher risk for post-traumatic stress symptoms, according to a new study of children's experiences in a pediatric intensive care unit.

An unusually high incidence of lung disease has been diagnosed in workers at popcorn factories. Researchers are focusing on diacetyl, the ingredient which is largely responsible for the odor and flavor of the butter in popcorn, according to a new article in Toxicologic Pathology.

Dentistry researchers have identified the slimy culprits killing the jawbones of some people taking drugs that treat osteoporosis. Microbial biofilms, a mix of bacteria and sticky extracellular material, are causing jaw tissue infections in patients taking bisphosphonate drugs, according to the lead researcher.

By monitoring gene activity levels and changes in chromatin -- the protein spools that the genes wrap around -- researchers were able to detect epigenetic factors that make fruit fly cells resistant to radiation. The discovery suggests that tumor cells may have similar protection from radiotherapy or chemotherapy, an insight that may lead to more effective cancer treatments.

Researchers have found a new model to explain how signals between cells in the embryo control limb development. They discovered that secreted growth factors at the distal tip of the embryonic limb act as instructive molecules that control the pattern of bones along the length of the limb in an animal model.

Scientists have characterized "Chapare arenavirus," a previously unrecognized arenavirus, discovered in serum samples from a patient in rural Bolivia who eventually died of the infection. Named after the Chapare River in the eastern foothills of the Andes, the new Chapare arenavirus produces clinical hemorrhagic symptoms similar to those associated with other New World arenaviruses, such as the Junin, Machupo, Guanarito, and Sabia viruses. Genetically, however, Chapare is different from each.

The inability to manage weight gain and weight regain throughout life is helping to fuel the obesity epidemic in adults and children throughout Europe. However, the successful participation of more than 400 families in eight countries in the largest European dietary intervention study is helping to address this vital issue.