An estimated 5.5 million Americans of all ages have Alzheimer's disease. Of the estimated 5.5 million Americans living with Alzheimer's dementia in 2017, an estimated 5.3 million are age 65 and older and approximately 200,000 individuals are under age 65 and have younger-onset Alzheimer's. One in 10 people age 65 and older (10 percent) has Alzheimer's dementia.
Naturally, some smarty pants might make a case for smiles being the longest word in the English language. Sure, it has only six letters, but you can also truthfully say that there is a âmile between the first and last letters!
Worldâs Longest Word Takes 3.5 Hours to Pronounce. The word is 189,819 letters long. Itâs actually the name of a giant protein called Titin. Proteins are usually named by mashing-up the names of the chemicals making them. And since Titin is the largest protein ever discovered, its name had to be equally as large.