maintaining wellbeing -prevention of dementia · sommerlad, vasiliki orgeta, sergi g costafreda,...
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Maintaining wellbeing - prevention of dementia
Sube BanerjeeExecutive Dean & Professor of Dementia
Faculty of HealthUniversity of Plymouth
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Figure 1
Source: The Lancet 2013; 382:1405-1412(DOI:10.1016/S0140-6736(13)61570-6)
CFAS I and CFAS II age-specific dementia prevalence
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The prevalence of dementia in China 1990-2010Chen et al, Lancet 2013
1990
2010
Increasing prevalence of dementia in China?
3.5%
5.1%46% increase1990-2010
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Dementia prevention, intervention, and care
Gill Livingston, Andrew Sommerlad, Vasiliki Orgeta, Sergi G Costafreda, Jonathan Huntley, David Ames, Clive Ballard, Sube Banerjee, Alistair Burns, Jiska Cohen-Mansfield, Claudia Cooper, Nick Fox, Laura N Gitlin, Robert Howard, Helen C Kales, Eric B Larson, Karen Ritchie, Kenneth Rockwood, Elizabeth L Sampson, Quincy Samus, Lon S Schneider, Geir Selbæk, Linda Teri, Naaheed Mukadam
The Lancet, Vol. 390, No. 10113
Published: July 19, 2017
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The Nun Study
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The Nun Study
• A historical cohort study of elderly Milwaukee nuns who wrote a biography at age 18 on entering holy orders– Biography analysed for
• Idea density • Grammatical complexity
– Related to• 83 nuns - Late-life cognitive function• 24 nuns - Post mortem brain pathology
Snowdon - JAMA 1996
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The Nun study - neuropsychology
Poor scores on ¯
Low idea density
High idea density
Odds ratio
MMSE 35% 2% 30.8 (2.6-362)
Delayed word recall
41% 3% 15.3 (3.0-78.3)
Verbal fluency
21% 3% 8.9 (1.7-47.2)
Snowdon - JAMA 1996
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The Nun study - neuropathology
Low idea density N=10
High idea density N=14
% with >= 1 NFT 90% 29%
Mean no. of NFTs/ 0.6 mm2
9.4 0.5
Mean NFT density adj. for age at death and yrs of education
8.8 (6.1-11.5) 1.0 (0.0-3.4)
Snowdon - JAMA 1996
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The Nun Study
• low linguistic ability in early life (low idea density & low grammatical complexity in autobiographical essays) was associated with the development of AD neuropathology (but not cerebrovascular pathology) in later life
• Central importance of building and maintaining COGNITIVE RESERVE
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Modifiable risk factors
for dementia – Lancet
Commission
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INTENSIVE INTERVENTIONNutritionExercise
Cognitive training Vascular risk monitoring
years 2
REGULAR HEALTH ADVICE
N= 126060-77 years
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Primary: NTB total score(Composite z-score)
Red - interventionBlue - control
Lines = estimates for change from baseline to 1 & 2 years Error bars = standard errorsP-values = difference in trajectories over time between groups
Ngandu, Kivipelto et al. Lancet 2015
Summary of FINGER findings
25% higher improvement
p=0.03 0.00
0.05
0.10
0.15
Baseline 12months
24months
Executive functioning
0.00
0.05
0.10
0.15
Baseline
12 months
24 months
Processing speed
83% higher improvement 150% higher improvement
p=0.04 p=0.03
Memory (complex tasks)
p=0.04
40% higher improvement
• Lower risk for cognitive decline
• 30% lower risk for functional decline (IADL) (Kulmala et al., manuscript)
• Better health related quality of life (Strandberg et al, Eur Ger Med 2017)
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Maintaining brain health – health promotion
• Integrate with Non Communicable Disease prevention agendas– Tobacco control, salt, alcohol, inactivity, CVRF management– Its never too early….. (education, nutrition, hypertension)– Its never too late….. (smoking, diabetes)
• Central importance of building and maintaining COGNITIVE RESERVE
• Lancet Commission recommendation - Be ambitious about prevention. We recommend active treatment of hypertension in middle aged (45–65 years) and older people (aged older than 65 years) without dementia to reduce dementia incidence. Interventions for other risk factors including more childhood education, exercise, maintaining social engagement, reducing smoking, and management of hearing loss, depression, diabetes, and obesity might have the potential to delay or prevent a third of dementia cases.
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Thank you!