A historian challenges a labor-history fable. Timothy Messer-Kruse doesnât remember her name, but the question she asked in his college classroom a dozen years ago changed his career â and now it may revolutionize everything historians thought they knew about a hallowed event in the imagination of the American Left.
Though the effects of the disease are similar, there are two main types. 1  Early-onset Alzheimer's. This type happens to people who are younger than age 65. 2  Late-onset Alzheimer's. This is the most common form of the disease, which happens to people age 65 and older.
Overview. Alzheimer disease is a chronic, incurable brain disorder characterized by progressive loss of brain tissue and function. The early stages of Alzheimer disease primarily affect intellectual functions. Late-stage Alzheimer disease directly or indirectly affects other body systems. The condition is ultimately fatal. The Alzheimer's Association estimates that up to 5.3 million men and women in the United States are living with Alzheimer disease.