Parkinson’s disease researchers have discovered how mutations in the parkin gene cause the disease, which afflicts at least 500,000 Americans and for which there is no cure.

New study finds that short fasting cycles can work as well as chemotherapy, and the two combined greatly improve survival.

With no lab tests to guide the clinician, psychiatric diagnostics is challenging and controversial. Antisocial personality disorder is defined as "a pervasive pattern of disregard for, and violation of, the rights of others that begins in childhood or early adolescence and continues into adulthood," according to a standard definition. But, until now, no one has studied the dimensional structure associated with the DSM antisocial personality disorder criteria.

A new analysis has found that a state ballot initiative to increase the cigarette tax would create about 12,000 jobs and nearly $2 billion in new economic activity in California.

Cleansing a newborn's umbilical cord with chlorhexidine can reduce an infant's risk of infection and death during the first weeks of life by as much as 20 percent, according to a new study. The study is the latest in a series of studies showing that umbilical cord cleaning with chlorhexidine can save lives.