Alzheimer’s disease is a devastating and progressive neurodegenerative disease affecting approximately 5.3 million people in the United States, including almost half of the population at 85 years and older.  Microscopic hallmarks of the disease include neuritic plaques containing amyloid beta peptide and neurofibrillary tangles composed of tau.  It is generally believed that Alzheimer’s-related changes begin in the brain at least a decade before the emergence of … Continue reading New blood test detects early Alzheimer’s in large-scale study with unprecedented sensitivity.