Dr. Daniel Amen warns about the hidden impact of insufficient sleep on the brain Sleep is critical for brain function and longevity, according to Dr. Daniel Amen, psychiatrist and owner of Amen Clinics in California. NEW You can now listen to Fox News articles! Living near heavy traffic could negatively impact your heart health . A European study, published in the journal Environmental Research, found that exposure to nighttime road traffic noise is linked to changes in the blood, leading to