diabetes - who.int · world health . department of chronic disedepartment of chronic diseases and...
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World Health OrganizationDepartment of Chronic Diseases and Health PromotionDepartment of Chronic Diseases and Health Promotion
World Health Organization
Gojka Roglic
Diabetes
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World Health OrganizationDepartment of Chronic Diseases and Health PromotionDepartment of Chronic Diseases and Health Promotion
What is diabetes ?
Diabetes mellitus is a metabolic disorder of multiple aetiology, characterized by chronic hyperglycaemia with disturbances of carbohydrate, fat and protein metabolism resulting from defects in insulin secretion, insulin action, or both.
WHO, 1999
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World Health OrganizationDepartment of Chronic Diseases and Health PromotionDepartment of Chronic Diseases and Health Promotion
Three major types of diabetes
• Type 1 (5-15%)
• Type 2 (85-95%)
• Gestational diabetes
WHO, 1999
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World Health OrganizationDepartment of Chronic Diseases and Health PromotionDepartment of Chronic Diseases and Health Promotion
Causes of diabetes
Largely unknown……….
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World Health OrganizationDepartment of Chronic Diseases and Health PromotionDepartment of Chronic Diseases and Health Promotion
Causes of diabetes
Genetic susceptibility+
Environmental factors
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World Health OrganizationDepartment of Chronic Diseases and Health PromotionDepartment of Chronic Diseases and Health Promotion
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World Health OrganizationDepartment of Chronic Diseases and Health PromotionDepartment of Chronic Diseases and Health Promotion
Type 1 diabetes risk factors:
• Viral infections?• Maternal nutrition in pregnancy?• Infant nutrition?• Environmental toxins?• Protective effect of intestinal parasites?
No known means for prevention
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World Health OrganizationDepartment of Chronic Diseases and Health PromotionDepartment of Chronic Diseases and Health Promotion
Type 2 risk factors:
• Overweight, obesity
• Physical inactivity
• Smoking?
Potentially preventable
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Number of persons with diabetes in the world 2010(IDF Atlas, 4th ed)
285 million in 2010 (0.5 million type 1)
438 million in 2030
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World Health OrganizationDepartment of Chronic Diseases and Health PromotionDepartment of Chronic Diseases and Health Promotion
Age distribution of persons with diabetes in Europe, 2010 (IDF Atlas, 4th ed)
0.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
20-39 40-59 60-79Age group (years)
Mill
ions
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World Health OrganizationDepartment of Chronic Diseases and Health PromotionDepartment of Chronic Diseases and Health Promotion
Age distribution of persons with diabetes in South- East Asia, 2010 (IDF Atlas, 4th ed)
0.05.0
10.015.020.025.030.035.0
20-39 40-59 60-79Age group (years)
Mill
ions
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Health Statistics and Informatics
Deaths attributed to 19 leading factors, by country income level, 2004
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World Health OrganizationDepartment of Chronic Diseases and Health PromotionDepartment of Chronic Diseases and Health Promotion
The rising global prevalence of diabetes (millions)
0
50
100
150
200
250
300
WHO 2000 IDF 2003 IDF 2007 IDF 2010
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World Health OrganizationDepartment of Chronic Diseases and Health PromotionDepartment of Chronic Diseases and Health Promotion
RISING PREVALENCE OF DIABETES IN URBAN INDIA(Mohan, 2006)
1989 - 2005
8.3
11.613.5
14.3
0
5
10
15
20
Prev
alen
ce[%
]
1989 1995 2000 2004YEARS
Within a span of 14 years, the prevalence of diabetes increased by 72.3%
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World Health OrganizationDepartment of Chronic Diseases and Health PromotionDepartment of Chronic Diseases and Health Promotion
World Health Organization
Is there a diabetes epidemic?
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World Health OrganizationDepartment of Chronic Diseases and Health PromotionDepartment of Chronic Diseases and Health Promotion
Possible causes of increasing type 2 diabetes prevalence
• Ageing of the population
• Younger age at onset
• Decreasing mortality
• Increasing incidence
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World Health OrganizationDepartment of Chronic Diseases and Health PromotionDepartment of Chronic Diseases and Health Promotion
Possible causes of increasing type 2 diabetes prevalence (Colagiuri et al, 2005)
• Ageing of the population• Younger age at onset• Decreasing mortality
Explain only 20-25% increase in prevalence
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World Health OrganizationDepartment of Chronic Diseases and Health PromotionDepartment of Chronic Diseases and Health Promotion
Possible causes of increasing type 2 diabetes prevalence (from Colagiuri et al, 2005)
• Ageing of the population• Younger age at onset• Decreasing mortality
• Increasing incidence!
Explain only 20-25% increase in prevalence
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World Health OrganizationDepartment of Chronic Diseases and Health PromotionDepartment of Chronic Diseases and Health Promotion
WHO Global Strategy for the Prevention and Control of Noncommunicable Diseases, 2000
TobaccoUse
Unhealthy diets
Physical Inactivity
HarmfulUse of Alcohol
Cardio- vascular
Diabetes
Cancer
ChronicRespiratory
Determinants outside the health sector, including:• Ministries of Finance, Trade, Education, Social Affairs• Development donors• International Financial Institutions• Intergovernmental Organizations
Determinants outside the health sector, including:• Ministries of Finance, Trade, Education, Social Affairs• Development donors• International Financial Institutions• Intergovernmental Organizations
Four diseases and four risk factorsFour diseases and four risk factors
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World Health OrganizationDepartment of Chronic Diseases and Health PromotionDepartment of Chronic Diseases and Health Promotion
Prevalence of overweight and obesity in 10 year old boys and girls in selected countries (IOTF, 2005)
Prevalence of overweight and obesity in 10 year old boys and girls in selected countries (IOTF, 2005)
MaltaItaly USA
ChileAustralia
Germany Venezuela
JapanSingapore
FranceUK
HungarySlovakiaSweden
Hong KongBrazil
Netherlands
Overweight girlsObese girlsOverweight boysObese boys
30 20 10 0 10 20 3040 40%
MaltaItaly USA
ChileAustralia
Germany Venezuela
JapanSingapore
FranceUK
HungarySlovakiaSweden
Hong KongBrazil
Netherlands
Overweight girlsObese girlsOverweight boysObese boys
30 20 10 0 10 20 3040 40%
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World Health OrganizationDepartment of Chronic Diseases and Health PromotionDepartment of Chronic Diseases and Health Promotion
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World Health OrganizationDepartment of Chronic Diseases and Health PromotionDepartment of Chronic Diseases and Health Promotion
World Health Organization
Is type 2 diabetes preventable…..
•In the population?•In people at high risk?
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World Health OrganizationDepartment of Chronic Diseases and Health PromotionDepartment of Chronic Diseases and Health Promotion
Primary prevention of type 2 diabetes in the population
• Intuitively appealing, but few tries and little evidence– Finnish Diabetes Programme – Singapore National Healthy Lifestyle
Programme (Bhalla, 2006)
– (Un)natural experiments• Japan (Goto, 1958)• Netherlands (Hermanides, 2008)• Cuba (Franco, 2007)• Paris (anecdotal)• England (anecdotal)
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World Health OrganizationDepartment of Chronic Diseases and Health PromotionDepartment of Chronic Diseases and Health Promotion
Primary prevention of type 2 diabetes in the population
Economic crisis in Cuba, 1990's (Franco, 2007)
• CHD mortality reduced
•Diabetes mortality levels off
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World Health OrganizationDepartment of Chronic Diseases and Health PromotionDepartment of Chronic Diseases and Health Promotion
Study N IGT Pop Age FUYrs FU % Rx RRR
Finnish DPS 522 BMI >
25 55 3.2 92 Diet/Ex 58%
DPP 2161 BMI >
24 FPG >5.3 51 3 93 Diet/Ex 58%
DaQing 259 Groups 45 6 92 Diet/Ex 38%
Kosaka 458 Men; BMI = 24 ~55 4 92 Diet/Ex 67%
India DPP 269 Any IGT 46 2.5 95 Diet/Ex 29%
Prevention of diabetes in people at high risk, by lifestyle modification
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World Health OrganizationDepartment of Chronic Diseases and Health PromotionDepartment of Chronic Diseases and Health Promotion
Cumulative incidence of diabetes in Da Qing Follow-up Study (Li et al, Lancet 2008)
0102030405060708090
100
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20Follow-up (years)
% w
ith d
iabe
tes
Control groupIntervention group
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World Health OrganizationDepartment of Chronic Diseases and Health PromotionDepartment of Chronic Diseases and Health Promotion
Can complications of diabetes be prevented/delayed ?
• Yes, convincing evidence from rigorous trials
• However, great inequities in access to quality treatment
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World Health OrganizationDepartment of Chronic Diseases and Health PromotionDepartment of Chronic Diseases and Health Promotion
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World Health OrganizationDepartment of Chronic Diseases and Health PromotionDepartment of Chronic Diseases and Health Promotion
Proposed actions for:
• Member States
• WHO Secretariat– WHO Headquarters– WHO Regional Office for Africa (AFRO)– WHO Regional Office for the Americas (AMRO)– WHO Regional Office for the Eastern Mediterranean (EMRO)– WHO Regional Office for Europe (EURO)– WHO Regional Office for South-East Asia (SEARO)– WHO Regional Office for the Western Pacific (WPRO)
• International partners
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World Health OrganizationDepartment of Chronic Diseases and Health PromotionDepartment of Chronic Diseases and Health Promotion
Reducing the level of exposure of individuals and populations to unhealthy diet and physical inactivity:
- Population salt reduction platforms & strategies – Population prevention strategies for
childhood obesity– Recommendations on the marketing of
foods and non-alcoholic beverages to children
– Global Recommendations on physical activity and health
– NCD Prevention through Diet and Physical Activity in Schools and Worksites
– The WHO STEPwise Approach to Chronic Disease Risk Factor Surveillance (STEPS)
– From Surveillance-to-Policy workshops– Technical support package (next slide)
Why are the poorest people in low- and middle-income countries affected the most?Objectives 2 and 3 – Technical support for national policies and plans
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World Health OrganizationDepartment of Chronic Diseases and Health PromotionDepartment of Chronic Diseases and Health Promotion
• WHO technical support package of essential interventions to promote healthy diet and physical activity:
– Population prevention strategies for childhood obesity
– Population salt reduction platforms and strategies
– Recommendations on the marketing of foods and non-alcoholic beverages to children
– Global recommendations on physical activity and health
Why are the poorest people in low- and middle-income countries affected the most?Objectives 2 and 3 – Technical support for national policies and plans
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World Health OrganizationDepartment of Chronic Diseases and Health PromotionDepartment of Chronic Diseases and Health Promotion
Strengthening health care for people with noncommunicable diseases:
– WHO technical support package of essential interventions to integrate NCD prevention and control into primary care
Why are the poorest people in low- and middle-income countries affected the most?Objectives 2 and 3 – Technical support for national policies and plans
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World Health OrganizationDepartment of Chronic Diseases and Health PromotionDepartment of Chronic Diseases and Health Promotion
World Health Organization
"…….there are now indications of a rapid increase in the disease that are in complete accord with the
recognized clinical association between diabetes and increased food consumption, reduced physical
exertion and obesity….. "
Diabetes Mellitus. Report of a WHO Expert Committee, 1965
Emerging issue of public health importance?