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Treatment that combines a certain type of psychotherapy with an antidepressant medication is most likely to help children with anxiety disorders, but each of the treatments alone is also effective, according to a new study in the New England Journal of Medicine.

When it comes to the decision to wake up and grow, bacterial spores "listen in" to find out what their neighbors are doing and then they follow the crowd, according to a new report.

The hepatitis C virus is a prolific replicator, able to produce up to a trillion particles per day in an infected person by hijacking liver cells in which to build up its viral replication machinery. Now new research -- in which scientists have for the first time used fluorescent proteins to image hepatitis C virus replication in live cells -- shows that the microscopic viral factories are a diverse mix of big, immobile structures and tiny replication complexes that zip zanily around inside the cell.

A study of over 40,000 women and their babies found that women who gained more than 40 pounds during their pregnancies were nearly twice as likely to have a heavy baby. The study found that more than one in five women gains excessive weight during pregnancy, doubling her chances of having a baby that weighs 9 pounds or more.

Tumors that grow around nerves in a rare genetic disease need cooperation from cells from the immune system in order to grow, according to scientists.

Could eating grapes help fight high blood pressure related to a salty diet? And could grapes calm other factors that are also related to heart diseases such as heart failure? A new study performed in animals suggests so.

Researchers have shown that the main neurological markers for Alzheimer's disease are exacerbated in the brains of mice fed a diet rich in animal fat and poor in omega-3s. Details of the study -- which suggests that diets typical of most industrialized countries promote the development of Alzheimer's -- are outlined in the journal Neurobiology of Aging.

In the largest ever genetic study of male to female transsexuals, Australian researchers have found a significant genetic link between gender identity and a gene involved in testosterone action.

Biologists today are doing what Darwin thought impossible. They are studying the process of evolution not through fossils but directly, as it is happening. Now, by modeling the steps evolution takes to build, from scratch, an adaptive biochemical network, biophysicists have gone one step further. Instead of watching evolution in action, they show that they can predict its next best move.

Giving children with milk allergies increasingly higher doses of milk over time may ease, and even help them completely overcome, their allergic reactions, according to the results of a new study. However, the researchers emphasize that the findings require further research and advise parents and caregivers not to try oral immunotherapy without medical supervision.