A study released on Monday by the Dental Health Foundation found that by third grade, nearly two-thirds of California children have dental disease, making it the most prevalent children's health problem in the state.

David Perry, DDS, Chair of the Dental Health Foundation says, "Dental disease is now the single most common chronic disease of childhood, and is seriously impairing the quality of life for thousands of children in California each year. That not only hurts our children, it hurts all of us

California becomes the first U.S. state to classify second-hand tobacco smoke as a toxic air pollutant.

The decision by the California Air Resources Board puts the smoke in the same category as diesel exhaust, which could lead to stiffer regulations

National Football League (NFL) players showed more evidence of rapid recovery from concussions than high school football players in a research study conducted by the NFL's Committee on Mild Traumatic Brain Injury.

The study is the first to provide a direct comparison of neurocognitive recovery in professional and younger athletes, within days of concussion occurrence, by using a computerized neurocognitive testing tool, ImPACT (Immediate Post-Concussion Assessment and Cognitive Testing)

According to Georgetown University Medical Center and a Canadian research institute, drugs that treat depression by manipulating the neurotransmitter serotonin in the brain may also affect the patient's immune system in ways that are not yet understood.

Researchers discovered that serotonin is passed between key cells in the immune system, and that the chemical is specifically used to activate an immune response

An employees insurance coverage can affect absenteeism from work.

Employees with continuous health insurance coverage have significantly less missed work time than uninsured workers, reports a study in the January Journal of Occupational and Environmental Medicine