Featured Research

from universities, journals, and other organizations

Shorter sleep duration, poorer sleep quality linked to Alzheimer’s disease

Date:
October 21, 2013
Source:
Johns Hopkins Bloomberg School of Public Health
Summary:
New study finds that shorter sleep duration and poorer sleep quality are associated with a greater -Amyloid burden, a biomarker for Alzheimer's disease

Poor sleep quality may impact Alzheimer's disease onset and progression. This is according to a new study led by researchers at the Johns Hopkins Bloomberg School of Public Health who examined the association between sleep variables and a biomarker for Alzheimer's disease in older adults. The researchers found that reports of shorter sleep duration and poorer sleep quality were associated with a greater β-Amyloid burden, a hallmark of the disease. The results are featured online in the October issue of JAMA Neurology.

"Our study found that among older adults, reports of shorter sleep duration and poorer sleep quality were associated with higher levels of β-Amyloid measured by PET scans of the brain," said Adam Spira, PhD, lead author of the study and an assistant professor with the Bloomberg School's Department of Mental Health. "These results could have significant public health implications as Alzheimer's disease is the most common cause of dementia, and approximately half of older adults have insomnia symptoms."

Alzheimer's disease is an irreversible, progressive brain disease that slowly destroys memory and thinking skills. According to the National Institutes of Health, as many as 5.1 million Americans may have the disease, with first symptoms appearing after age 60. Previous studies have linked disturbed sleep to cognitive impairment in older people.

In a cross-sectional study of adults from the neuro-imagining sub-study of the Baltimore Longitudinal Study of Aging with an average age of 76, the researchers examined the association between self-reported sleep variables and β-Amyloid deposition. Study participants reported sleep that ranged from more than seven hours to no more than five hours. β-Amyloid deposition was measured by the Pittsburgh compound B tracer and PET (positron emission tomography) scans of the brain. Reports of shorter sleep duration and lower sleep quality were both associated with greater Αβ buildup.

"These findings are important in part because sleep disturbances can be treated in older people. To the degree that poor sleep promotes the development of Alzheimer's disease, treatments for poor sleep or efforts to maintain healthy sleep patterns may help prevent or slow the progression of Alzheimer disease," said Spira. He added that the findings cannot demonstrate a causal link between poor sleep and Alzheimer's disease, and that longitudinal studies with objective sleep measures are needed to further examine whether poor sleep contributes to or accelerates Alzheimer's disease.

"Self-reported Sleep and β-Amyloid Deposition in Community-Dwelling Older Adults," was written by Adam P. Spira, Alyssa A. Gamaldo, Yang An, Mark N. Wu, Eleanor M. Simonsick, Murat Bilgel, Yun Zhou, Dean F. Wong, Luigi Ferrucci and Susan M. Resnick.

The research was supported in part by the National Institutes of Health and the Johns Hopkins School of Medicine Brain Science Institute. Dr. Spira is supported by Mentored Research Scientist Development Award (K01AG033195) from the National Institute on Aging.


Story Source:

The above story is based on materials provided by Johns Hopkins Bloomberg School of Public Health. Note: Materials may be edited for content and length.


Journal Reference:

  1. Adam P. Spira. Self-reported Sleep and β-Amyloid Deposition in Community-Dwelling Older Adults. JAMA Neurology, 2013; DOI: 10.1001/jamaneurol.2013.4258

Cite This Page:

Johns Hopkins Bloomberg School of Public Health. "Shorter sleep duration, poorer sleep quality linked to Alzheimer’s disease." ScienceDaily. ScienceDaily, 21 October 2013. <www.sciencedaily.com/releases/2013/10/131021162546.htm>.
Johns Hopkins Bloomberg School of Public Health. (2013, October 21). Shorter sleep duration, poorer sleep quality linked to Alzheimer’s disease. ScienceDaily. Retrieved September 20, 2014 from www.sciencedaily.com/releases/2013/10/131021162546.htm
Johns Hopkins Bloomberg School of Public Health. "Shorter sleep duration, poorer sleep quality linked to Alzheimer’s disease." ScienceDaily. www.sciencedaily.com/releases/2013/10/131021162546.htm (accessed September 20, 2014).

Share This



More Health & Medicine News

Saturday, September 20, 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
Jury Delivers Verdict in Salmonella Trial

Jury Delivers Verdict in Salmonella Trial

AP (Sep. 19, 2014) A federal jury has convicted three people in connection with an outbreak of salmonella poisoning five years ago that sickened hundreds of people and was linked to a number of deaths. (Sept. 19) Video provided by AP
Powered by NewsLook.com
How The 'Angelina Jolie Effect' Increased Cancer Screenings

How The 'Angelina Jolie Effect' Increased Cancer Screenings

Newsy (Sep. 19, 2014) Angelina's Jolie's decision to undergo a preventative mastectomy in 2013 inspired many women to seek early screenings for the disease. Video provided by Newsy
Powered by NewsLook.com
The Cost of Ebola

The Cost of Ebola

Reuters - Business Video Online (Sep. 18, 2014) As Sierra Leone prepares for a three-day "lockdown" in its latest bid to stem the spread of Ebola, Ciara Lee looks at the financial implications of fighting the largest ever outbreak of the disease. Video provided by Reuters
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