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Recent News and Articles on the Keywords: poor sleep + cognitive decline + women  Related to the article below (Last Update: 7/8/2008)

Losing our Faculties: A simple way of keeping our mind sharp
What Doctors Don't Tell You, UK - Jun 12, 2008
Researchers from the Netherlands Institute for Neuroscience have found that cognitive decline is associated with poor sleep patterns, and people with ...
Source: Google News

Depressive Symptoms and Cognitive Decline in Nondemented Elderly Women: A Prospective Study -
K Yaffe, T Blackwell, R Gore, L Sands, V Reus, WS … - Archives of General Psychiatry, 1999 - archpsyc.highwire.org
... depression, such as disturbances in concentration, poor energy, changes in sleep
patterns, and ... are a risk factor for cognitive decline by prospectively ...
-

[CITATION] The Impact of Insomnia on Cognitive Functioning in Older Adults -
M Cricco, EM Simonsick, DJ Foley - Geriatrics, 2001 - Blackwell Synergy
... study of 6,444 men and women age 65 ... and independent risk factor for cognitive decline
in nondepressed ... from the concurrent effects of poor sleep because those ...

[CITATION] … Sleepiness Is Associated with 3-Year Incident Dementia and Cognitive Decline in Older Japanese- … -
D Foley, A Monjan, K Masaki, W Ross, R Havlik, L … - Geriatrics, 2001 - Blackwell Synergy
... prescribed and over-the-counter medications, poor sleep hygiene, and ... (2007) The Relation
Between Cognitive Functioning and ... (2006) Self-Reported Sleep and Nap ...

The cognitive sequelae of standard-dose adjuvant chemotherapy in women with breast carcinoma -
JS Wefel, R Lenzi, RL Theriault, RN Davis, CA … - Cancer, 2004 - doi.wiley.com
... and physical symptoms (eg, sleep disturbances). ... agitation, psychotic tendencies,
and poor physical health. ... classified as exhibiting cognitive decline and those ...

Poor Sleep Is Associated With Impaired Cognitive Function in Older Women: The Study of Osteoporotic … -
T Blackwell, K Yaffe, S Ancoli-Israel, JL … - Journals of Gerontology Series A: Biological and Medical …, 2006 - Geron Soc America
... be generalizable to other populations such as men or younger women. The direction
of the relationship, whether poor sleep predicts cognitive decline or lower ...

Subjective sleep problems in later life as predictors of cognitive decline. Report from the … -
M Jelicic, H Bosma, RWHM Ponds, MPJ Van Boxtel, PJ … - International Journal of Geriatric Psychiatry, 2002 - doi.wiley.com
... sleep problems have a relation- ship with cognitive decline? ... sleep complaints
re?ect genuine sleep pro- blems. Poor quality of sleep may derange metabolic and ...

Daytime Sleepiness and Cognitive Impairment in the Elderly Population -
MM Ohayon, MF Vecchierini - Archives of Internal Medicine, 2002 - Am Med Assoc
... were positively correlated with poor cognitive performance. ... anoxia provoked by breathing
pauses during sleep. ... the likelihood of cognitive decline decreases. ...

[CITATION] How Age and Daytime Activities Are Related to Insomnia in the General Population: Consequences for … -
MM Ohayon, J Zulley, C Guilleminault, S Smirne, RG … - Geriatrics, 2001 - Blackwell Synergy
... with a reduction in the likelihood of cognitive decline. ... 34 Nevertheless, if poor
sleep can be the consequence of ... 35 found superior sleep quality in a group of ...

[CITATION] Prevalence and Correlates of Anxiety Symptoms in Well-Functioning Older Adults: Findings from the … -
KM Mehta, EM Simonsick, BWJH Penninx, R Schulz, SM … - Geriatrics, 2003 - Blackwell Synergy
... an attenuated version of the sleep-related changes ... of depressive symptomatology in
poor health outcomes ... Depressive symptoms and cognitive decline in nondemented ...

Postoperative cognitive deficit in the elderly surgical patient -
C Dodds, J Allison - British Journal of Anaesthesia, 1998 - British Jrnl Anaesthesia
... When cognitive outcome was analysed as a within-patient change, there was no
significant ... the two groups in the percentage of patients with a decline in score ...

Source: Google Scholar

Poor Sleep Associated With Cognitive Decline In Elderly Women
Women who experienced cognitive decline over a 13 to 15 year period after age 65 were more likely to sleep poorly than women whose cognition did not decline, according to a study led by researchers at the San Francisco VA Medical Center (SFVAMC).

The women's cognitive decline was associated with interrupted or fitful sleep. Total sleep time per night made no difference, says lead author Kristine Yaffe, MD, chief of geriatric psychiatry at SFVAMC and professor of psychiatry, neurology, epidemiology, and biostatistics at the University of California, San Francisco (UCSF).

"This indicates that it's not how long you sleep, but how well you sleep," she says.
The study appears in Neurology.

Yaffe speculates that there are three possible explanations for the association between cognitive decline and disturbed sleep. She says the first and most likely reason is that whatever neurodegenerative condition is starting to cause cognitive decline, such as Alzheimer's disease, is also affecting areas of the brain that govern sleep.

"Sleep is very complex," notes Yaffe. "It involves a coordinated series of neurologic functions that we don't entirely understand. It's not unlikely that early neurodegenerative disease could start having an effect on sleep centers as well."

Another possibility is that someone who is becoming cognitively impaired is sleeping poorly "because they're aware of their condition and they're worried about it."

Finally, Yaffe says that other factors entirely, such as brain inflammation or genetic changes, might cause both cognitive decline and sleep disturbance at the same time.

The researchers studied 2,474 women who were part of a larger ongoing prospective study of risk factors for osteoporosis that began in 1986. The mean age of the women was 68.9 years at the beginning of the study. Their cognitive health was measured at regular intervals over the course of the study using two standard cognitive tests: the Mini-Mental State Examination and the Trail Making Test, Part B, known as Trails B.

After 13 to 15 years in the study, the women were fitted with an actigraph, a small device worn on the wrist that measures movement and is known from previous studies to be highly accurate in differentiating sleep from wakefulness. The women wore the device for at least three consecutive 24-hour periods.

Women who performed progressively worse on both cognitive tests over time were significantly more likely to have difficulty falling asleep and staying asleep than women whose performance did not decline. Women who performed progressively worse on the Trails B test also napped significantly more during the day.
The association between cognitive decline and poor sleep remained even after the researchers adjusted for a host of other demographic factors such as age, education, depression, exercise, and health status.

"It's been known for some time that people with cognitive problems often have sleep problems, but those studies have mostly been done on severely demented people in nursing homes," observes Yaffe. "Ours was the first study to look at the relationship between sleep and cognition in healthy women dwelling in the community who did not have dementia to begin with."

Yaffe offers several cautions concerning the results of the study. First, men and African-American women were excluded from the original osteoporosis study because both of those groups have low incidence of osteoporotic fractures. Additionally, sleep patterns were measured only once, "so it's more of a snapshot."

However, Yaffe says that the research group has received a grant from the National Institutes of Health to continue tracking sleep patterns and cognitive health over time in the same study cohort. "Hopefully, we'll be able to tell if cognitive changes lead to sleep disturbances, or if the reverse is true, or if they have a common independent cause."

Co-authors of the paper were Terri Blackwell, MA, of the California Pacific Medical Center Research Institute (CPMCRI); Deborah E. Barnes, PhD, of SFVAMC and UCSF; Sonia Ancoli-Israel, PhD, of the University of California, San Diego and the VA San Diego Healthcare System; and Katie Stone, PhD, of CPMCRI, for the Study of Osteopororic Fractures Group.

The study was supported by grants from the National Institutes of Health and the National Institute on Aging.

SFVAMC has the largest medical research program in the national VA system, with more than 200 research scientists, all of whom are faculty members at UCSF.

UCSF is a leading university that advances health worldwide by conducting advanced biomedical research, educating graduate students in the life sciences and health professions, and providing complex patient care.

Source: Steve Tokar
University of California - San Francisco
 
 
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