Featured Research

from universities, journals, and other organizations

Traumatic brain injury in veterans may increase risk of dementia

Date:
June 25, 2014
Source:
American Academy of Neurology
Summary:
Older veterans who have experienced a traumatic brain injury (TBI) are 60 percent more likely to later develop dementia than veterans without TBI, according to a new study.

Older veterans who have experienced a traumatic brain injury (TBI) are 60 percent more likely to later develop dementia than veterans without TBI, according to a study published in the June 25, 2014, online issue of Neurology, the medical journal of the American Academy of Neurology.

The study also found that veterans with a history of TBI developed dementia about two years earlier than those without TBI who had developed dementia.

"These findings suggest that a history of TBI contributes risk for dementia in later life in veterans. If we assume that this relationship is causal, it seems likely that the same increased risk probably occurs with TBI in the civilian population as well," said study author Deborah E. Barnes, PhD, MPH, of the University of California, San Francisco and the San Francisco Veterans Affairs Medical Center and a member of the American Academy of Neurology.

The study involved 188,784 veterans with an average age of 68 at the start of the study. All were free of dementia at the start of the study and had at least one visit to a VA health care facility at the start of the study and again an average of seven years later.

A total of 1,229 of the veterans had a TBI diagnosis. During the follow-up period, 196 veterans with TBI, or 16 percent, developed dementia, compared to 18,255, or 10 percent of those without TBI. After adjusting for other factors that could affect the risk of dementia, such as diabetes, high blood pressure, depression and alcohol abuse, researchers determined that veterans with TBI were 60 percent more likely to develop dementia than those without TBI.

On average, veterans with TBI developed dementia two years earlier than those without TBI, or at age 78.5 compared to 80.7. Also, those who did not develop dementia died 2.3 years earlier if they had a TBI versus no TBI (77.0 years versus 79.3 years). The researchers also found that the risk of dementia was higher in veterans with TBI who also had depression, post-traumatic stress disorder or cerebrovascular disease than in those with either TBI or these other conditions alone.

"This study convincingly shows that mild trauma has a role in increasing the risk of dementia and sheds light on the more complex relationship between medical and psychiatric diseases with TBI in the development of the future risk of dementias. Neuroscientists must take a careful and comprehensive approach and avoid oversimplified claims of causality," said Rodolfo Savica, MD, MSc, of the University of Utah School of Medicine in Salt Lake City, and a member of the American Academy of Neurology, who wrote an editorial accompanying the study.

The study was supported by the U.S. Department of Defense/NCIRE and the National Institutes of Health.


Story Source:

The above story is based on materials provided by American Academy of Neurology. Note: Materials may be edited for content and length.


Journal Reference:

  1. D. E. Barnes, A. Kaup, K. A. Kirby, A. L. Byers, R. Diaz-Arrastia, K. Yaffe. Traumatic brain injury and risk of dementia in older veterans. Neurology, 2014; DOI: 10.1212/WNL.0000000000000616

Cite This Page:

American Academy of Neurology. "Traumatic brain injury in veterans may increase risk of dementia." ScienceDaily. ScienceDaily, 25 June 2014. <www.sciencedaily.com/releases/2014/06/140625184752.htm>.
American Academy of Neurology. (2014, June 25). Traumatic brain injury in veterans may increase risk of dementia. ScienceDaily. Retrieved September 22, 2014 from www.sciencedaily.com/releases/2014/06/140625184752.htm
American Academy of Neurology. "Traumatic brain injury in veterans may increase risk of dementia." ScienceDaily. www.sciencedaily.com/releases/2014/06/140625184752.htm (accessed September 22, 2014).

Share This



More Mind & Brain News

Monday, September 22, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Could Grief Affect The Immune Systems Of Senior Citizens?

Could Grief Affect The Immune Systems Of Senior Citizens?

Newsy (Sep. 19, 2014) The study found elderly people are much more likely to become susceptible to infection than younger adults going though a similar situation. Video provided by Newsy
Powered by NewsLook.com
Food Addiction Might Be Caused By PTSD

Food Addiction Might Be Caused By PTSD

Newsy (Sep. 18, 2014) New research shows that women who suffer from PTSD are three times more likely to develop a food addiction. Video provided by Newsy
Powered by NewsLook.com
Corporal Punishment on Decline, Debate Renews

Corporal Punishment on Decline, Debate Renews

AP (Sep. 16, 2014) Corporal punishment in the United States is on the decline, but there is renewed debate over its use after Minnesota Vikings running back Adrian Peterson was charged with child abuse. (Sept. 16) Video provided by AP
Powered by NewsLook.com
FDA Eyes Skin Shocks Used at Mass. School

FDA Eyes Skin Shocks Used at Mass. School

AP (Sep. 15, 2014) The FDA is considering whether to ban devices used by the Judge Rotenberg Educational Center in Canton, Massachusetts, the only place in the country known to use electrical skin shocks as aversive conditioning for aggressive patients. (Sept. 15) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins