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.
Alzheimerâs: Alzheimer's disease is by far the most common kind of dementia. There are about 5.3 million Americans with Alzheimerâs disease. Vascular: Vascular dementia is often caused by an acute, specific event such as a stroke or transient ischemic attack where the blood flow to the brain has been interrupted.