Sleep expert warns poor rest may raise dementia risk over time Dr. Wendy Troxel, a Utah-based licensed clinical psychologist, reveals why regular, quality sleep is critical for cognitive health as people age. NEW You can now listen to Fox News articles! Common and treatable ear conditions may be associated with a higher risk of dementia, according to new research. A study from Columbia University investigated how middle-ear problems that may cause conductive hearing loss are linked to the brain