Children with older fathers are more likely to develop bipolar disorder, a mental illness that fluctuates between intense depression and mania, Swedish and British researchers said in a study.

Previous studies have linked increasing paternal age with schizophrenia and autism, but not bipolar disorder, formerly known as manic depression. Children born to fathers ages 30 to 34 were 11 percent more likely to be diagnosed as adults with the condition than those born to men 20 to 24. The diagnosis was 37 percent more likely in offspring of fathers 55 and older, the examination of Swedish health records found

Medical researchers will take an innovative approach to studying a Lyme-Like Illness that occurs in Texas and some other states.

There are conflicting reports about what causes Southern-Tick Associated Rash Illness (STARI), found in the southeastern and south central United States, and how infectious it is

The U.S. Food and Drug Administration (FDA) has approved an AIDS drug made by Gilead to treat patients with hepatitis B. The drug Viread has been available in the U.S. as a treatment for HIV infection in adults since 2001.

The FDA is joining regulators in Europe, Turkey, Australia and New Zealand by allowing the drug in U.S. Generically known as tenofovir, the drug is taken in the form of a pill once daily. It works by blocking HBV DNA polymerase, the enzyme that is necessary for the virus to replicate in liver cells

A genetic anomaly found in families with the rare Li-Fraumeni syndrome, may lead to a blood test to detect tumors early.

LFS is a rare hereditary disorder in which the sufferer has greater susceptibility to cancer. It is linked to the mutation of a tumor suppressor gene, which usually helps control cell growth

The finding may improve understanding of how the visual system develops and boost hope for the discovery of gene therapies for eye disorders.

Duane syndrome, which is more prevalent in women and in the left eye, affects about half a million people worldwide. It is a congenital eye movement disorder that causes eye muscles to contract and relax when they should not. The syndrome affects nerve growth in the eyes and cause them to have limited sideways movement