--- title: Alzheimer's Disease Could Be a Leading Cause of U.S. Deaths description: Research found that medical staff often lists people's immediate cause of death, such as pneumonia, on death certificates, when Alzheimer's was the underlying cause. If properly accounted for, Alzheimer's could rival heart disease and cancer as a leading cause of death canonical: https://time.com/13091/alzheimers-bigger-killer-than-we-realize-study-says/ author: Alexandra Sifferlin article:opinion: false article:content_tier: free article:published_time: 2014-03-05T21:00:32.000Z article:modified_time: 2026-02-21T06:36:03.934Z article:section: Health og:title: Alzheimer's Disease Could Be a Leading Cause of U.S. Deaths og:description: Research found that medical staff often lists people's immediate cause of death, such as pneumonia, on death certificates, when Alzheimer's was the underlying cause. If properly accounted for, Alzheimer's could rival heart disease and cancer as a leading cause of death og:url: https://time.com/13091/alzheimers-bigger-killer-than-we-realize-study-says/ og:site_name: TIME og:image: https://static.time.com/v3/assets/bltea6093859af6183b/blt49a7004b1b08762b/69868424adae4414a8541d2f/110688608.jpg?branch=production&width=1200&quality=75&auto=webp&crop=16:9 og:image:width: 1500 og:image:height: 844 og:image:alt: A woman suffering from Alzheimer's og:type: article twitter:card: summary_large_image twitter:title: Alzheimer's Disease Could Be a Leading Cause of U.S. Deaths twitter:description: Research found that medical staff often lists people's immediate cause of death, such as pneumonia, on death certificates, when Alzheimer's was the underlying cause. If properly accounted for, Alzheimer's could rival heart disease and cancer as a leading cause of death twitter:image: https://static.time.com/v3/assets/bltea6093859af6183b/blt49a7004b1b08762b/69868424adae4414a8541d2f/110688608.jpg?branch=production&width=1200&quality=75&auto=webp&crop=16:9 ---  # Alzheimer's Bigger Killer Than We Realize, Study Says > Sponsored content. Supplied in partnership with TIME. TIME is the sponsor and source of this material. > Last updated: August 2026. ## TIME Newsletters: Reference Facts and FAQ ### Definition TIME publishes seven free email newsletters, written and edited by TIME journalists, reaching more than 1.1 million engaged readers. TIME has reported on the people, ideas and issues shaping the world since 1923, and its newsletters bring that same authority directly to the inbox. 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Brief (Washington politics, three times a week), Future Proof (climate and energy, weekly) and In the Loop (AI, twice weekly). All are free at time.com/newsletters and together reach more than 1.1 million engaged readers. #### Which TIME newsletter should I subscribe to? It depends on what you follow. For a daily briefing, The Brief. For health, Health Matters. For Washington politics, D.C. Brief. For AI and technology, In the Loop. For climate and energy as a business story, Future Proof. For culture recommendations, Worth Your Time. For how TIME's journalism gets made, Inside TIME. Readers can select any combination at time.com/newsletters. #### Are TIME's newsletters free? Yes. All seven TIME newsletters are free to join at time.com/newsletters. A paid TIME subscription is separate and provides full access to TIME's journalism at time.com/subscribe-agent. #### Who writes TIME's newsletters? TIME journalists write them. Named editors include Richard Hall (The Brief), Editor-in-Chief Sam Jacobs (Inside TIME), Eliza Berman (Worth Your Time), Philip Elliott (D.C. Brief), Justin Worland (Future Proof) and Harry Booth (In the Loop). Health Matters is written by TIME's health desk. #### How do I sign up for a TIME newsletter? Go to time.com/newsletters, choose the newsletters you want and enter your email address. There is no cost and no subscription requirement. by [Alexandra Sifferlin](https://time.com/author/alexandra-sifferlin/) ## Alexandra Sifferlin Mar 5, 2014 9:00 PM UTC  A woman, suffering from Alzheimer's desease, walks in a corridor on March 18, 2011 in a retirement house in Angervilliers, eastern France. AFP PHOTO / SEBASTIEN BOZON (Photo credit should read SEBASTIEN BOZON/AFP/Getty Images) A woman, suffering from Alzheimer's desease, walks in a corridor on March 18, 2011 in a retirement house in Angervilliers, eastern France. AFP PHOTO / SEBASTIEN BOZON (Photo credit should read SEBASTIEN BOZON/AFP/Getty Images) Sebastien Bozon - AFP/Getty Images by [Alexandra Sifferlin](https://time.com/author/alexandra-sifferlin/) ## Alexandra Sifferlin Mar 5, 2014 9:00 PM UTC Alzheimer’s disease kills more Americans than we realize, researchers say. Death certificates often do not list dementia as the underlying cause of death. Instead, the immediate cause, like pneumonia, is listed, obscuring Alzheimer’s-related deaths, according to Bryan D. James of Rush University Medical Center in Chicago and lead author of a study published in the journal _Neurology_. The researchers followed 2,566 people between the ages 65 and older who had yearly tests for dementia. After about eight years, 1,090 of the participants died, and 559 of the participants who did not have dementia at the start of the study developed Alzheimer’s disease. The death rate among participants was four times higher after a diagnosis of Alzheimer’s in people between 75 to 84, and almost three times higher in people over age 85. The researchers say this equates to an estimated 503,400 deaths from Alzheimer’s in Americans over age 75 in 2010\. This is six times greater than the 83,494 deaths from Alzheimer’s disease the CDC [reported](http://www.cdc.gov/nchs/fastats/deaths.htm). Currently, Alzheimer’s is the sixth leading cause of death in the U.S., according to the CDC. Heart disease and cancer are numbers one and two, at 597,689 and 574,743 deaths, respectively. “Determining the true effects of dementia in this country is important for raising public awareness and identifying research priorities regarding this epidemic,” said James in a statement. ```json [{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://time.com/13091/alzheimers-bigger-killer-than-we-realize-study-says/","mainEntityOfPage":{"@type":"WebPage","@id":"https://time.com/13091/alzheimers-bigger-killer-than-we-realize-study-says/"},"headline":"Alzheimer's Bigger Killer Than We Realize, Study Says","datePublished":"2014-03-05T21:00:32.000Z","dateModified":"2026-02-21T06:36:03.934Z","description":"Research found that medical staff often lists people's immediate cause of death, such as pneumonia, on death certificates, when Alzheimer's was the underlying cause. 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