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.
Major dictionaries. The longest word in any of the major English language dictionaries is pneumonoultramicroscopicsilicovolcanoconiosis, a word that refers to a lung disease contracted from the inhalation of very fine silica particles, specifically from a volcano; medically, it is the same as silicosis.
7.The full chemical name of Titin. And finally, the longest word in the history of the English language currently stands at a whopping 189,819 letters. Even at breakneck speed (as demonstrated in the video above) it would take you approximately 8 mins to verbalise.. Pneumonoultramicroscopicsilicovolcanoconiosis. Is a word that refers a specific type of lung disease that's directly caused by silica dust-those very finely powdered granules. It's 45 letters in length and in fact does appear in most dictionaries, most doctors simple reference to the condition simply as silicosis.