According to the National Institute on Aging (NIA), Alzheimer’s Disease is now the most common form of dementia among older persons. Dementia is marked by serious decline of one’s cognitive abilities — that is, the ability to think clearly, remember information, and engage in critical reasoning. More than the occasional “slip of the brain” that all of us experience from time to time (like forgetting where we placed our house keys or when a friend’s anniversary is coming up), Alzheimer’s Disease involves significant damage to the brain itself.
As the NIA explains, the brains of persons with Alzheimer’s Disease will exhibit abnormal tissue clumps (known as amyloid plaques) and/or tangled bundles of fibers (known as neurofibrillary tangles). A third main characteristic of the disease is the loss of connection between neurons, or nerve cells, in the brain.
The US Centers for Disease Control and Prevention report that as many as 5 million Americans suffer from Alzheimer’s Disease. More than half of all Americans know, or know of, someone with Alzheimer’s. The disease is believed to affect some 35 million people worldwide. According to the Global Burden of Disease Study, worldwide deaths from Alzheimer’s disease and other dementias more than tripled between 1990 and 2010. This may not be altogether surprising, as nations advance and more and more people live longer lives.