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Obesity Levels Worldwide
Global Statistics for Obesity and Severe Overweight
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Details of Global Obesity Including Social & Financial Costs

Obesity Levels Worldwide

Short Articles About Obesity and Overweight
Levels - Causes - Obesity & Weight Loss - Obesity & Gallstones - Genes - Gender
Types of Obesity Treatment - Exercise Counseling - Diet Counseling - Risk Factor for Cancer
Risk Factor for Diabetes - Risk Factor for Heart Disease - Obesity: A Major Health Risk
Does Obesity Increase the Risk of Premature Death - Syndrome X & Obesity
Rise of Obesity and Diabetes - Does Overweight Shorten Life? - Obesity & Risk of Premature Death
Obesity, BMI and Premature Death - Fitness, Obesity and Lifespan - Weight Loss Health Benefits
Benefits of Weight Loss - Obesity and Surgical Operations
Obesity Health Dangers for Children - Obesity & Colon Cancer - Health vs. Weight Loss
Body Fat & Cancer - Obesity, Weight Loss & Immune Function - Weight Loss & Sleep Apnea
Glycemic Index & Obesity - Health, Weight & Obesity

Obesity - Epidemic Proportions

The prevalence of obesity is rising to epidemic proportions at an alarming rate in both developed “Westernised” and less developed countries around the world .

For example, the prevalence of obesity has increased by about 10-50% in the majority of European countries in the last 10 years and currently affects 77% of males living in urban areas of Western Samoa in the Pacific.

Obesity - Health Consequences

The health consequences of obesity range from a number of non-fatal complaints that impact on the quality of life such as respiratory difficulties, musculo-skeletal problems, skin problems and infertility; to complaints that lead to an increased risk of premature death including non-insulin dependant diabetes, gallbladder disease, cardiovascular problems (hypertension, stroke and CHD) and cancers which are hormone related and associated with the large bowel. Hypertension, diabetes and raised serum cholesterol are between two and six times more prevalent among heavier women. Severe obesity is associated with a 12 fold increase in mortality in 25-35 year olds when compared to lean individuals. Negative attitudes towards the obese can lead to discrimination in many areas of their life including health care and employment.

Obesity - Costs

The direct cost of diagnosis, treatment and management of obesity within national health systems has only been assessed in a few countries to date. Although the methodology varied considerably between studies, making it difficult to compare costs across countries and to extrapolate the results from one country to another, these estimates suggest that between 2-8% of the total sick care costs in Western countries are attributable to obesity. This represents a major fraction of national health care budgets comparable with for example, the total cost of cancer therapy. The potential impact on health care resources in the less developed health care systems of developing countries is likely to be even more severe .

Obesity & Weight Loss

Weight loss in overweight and obese individuals improves physical, metabolic, and endocrinological complications, often dramatically. Weight loss in obese persons can also improve depression, anxiety, psycho-social functioning, mood and quality of life.

Intentional weight loss of 0.5-9.0 kg in overweight women with existing obesity related disease led in a 12 year study in the US, to a 20% fall in total mortality, a 40-50% reduction in mortality from obesity related cancers, and a 30-40% reduction in diabetes related deaths.

Obesity Levels Rising in Developed & Under-Developed Countries

The prevalence of obesity is rising to epidemic proportions around the world at an alarming rate. The rise in obesity is not restricted to more developed countries. With increasing Westernisation, the prevalence of overweight and obesity appears to be rising amongst more affluent populations of Less Developed Countries, even in those countries with current food security problems and significant rates of under-nutrition. Ghana for example, has only slightly more underweight (BMI<18.4), than overweight (BMI>25) people. This situation has been exacerbated due to the image of prosperity and success associated with weight gain in many of these societies. It will be interesting to see whether these cultural attitudes to obesity alter with increasing Westernisation.

Obesity Rates in Europe

Obesity is relatively common in Europe, especially among women and in Southern and Eastern European countries.

Current prevalence data from individual national studies suggests that the range of obesity prevalence in European countries is from 10 to 20% for men, and 10 to 25% for women.
Prevalence of obesity has increased by about 10-40% in the majority of European countries in the past 10 years1. The most dramatic increase has been in the UK where it has more than doubled since 1980. There is some evidence however, that this increasing trend is levelling off among women, at least in some Scandinavian countries.

Obesity Levels in Africa

In contrast to most Western countries, the emphasis in Africa has been on under-nutrition and food security rather than overweight and obesity, and so there is little data on current prevalence.

Regional studies however, do indicate a growing prevalence of overweight and obesity in certain socio-economic groups. This can be illustrated by the high prevalence of obesity (44%) found in black women in the Cape Peninsular of the Republic of South Africa.

Obesity Rates in Middle East

The limited data available indicates that the prevalence of obesity in Middle Eastern countries is high, particularly in women who appear in general to have a higher prevalence of obesity than women in most Western countries.

Obesity Levels in America & Caribbean

Prevalence of obesity in US increased dramatically in the 1980s, especially among black women for whom 49% were identified as being overweight with a BMI > 27.3 in 1991.

Obesity is a significant problem in the Caribbean, particularly in those countries with a higher per capita GNP, and affects women more than men.

Brazil is the only Latin American country to have a nationally representative survey conducted in the last 10 years. The PNSN survey indicated that obesity is prevalent in Brazil and is rising, especially among lower income groups. The problem of dietary deficit appears to be rapidly shifting to one of dietary excess.

Obesity Rates in Western Pacific, Japan & China

In Japan, obesity in men has doubled since 1982, whereas its rise in women has been restricted to the younger age group (20-29 years) for which is has increased 1.8 times since 1976.

Obesity is increasing in China and is more common in urban areas and among women.

Obesity is not new to the Pacific and has long been regarded by Polynesian and Micronesian societies of this region as a symbol of high social status and prosperity. Prevalence has risen dramatically however, in the last 20 years. In 1991 for example, over 75% of urban males in Western Samoa were classified as obese. Childhood obesity appears to be no longer restricted to the West as illustrated by Tonga where 23% of school children were considered obese in 1986.

Obesity Management Systems

Despite the high prevalence of obesity and improvements to our understanding of how the disease develops, there are limited effective obesity management systems in place in national health care services around the world. There is a wide variation in obesity care services between countries, with very few having a coherent and comprehensive range of services capable of providing the level of care required to effectively manage obese patients. This is in contrast to other chronic diseases such as diabetes and coronary heart disease where integrated care is frequently provided.

It is clear therefore that the rational development of co-ordinated health care services for the management of overweight and obese patients is needed in most countries. Primary health care services should play the dominant role, although hospital and specialist services are also required for dealing with more severe cases and the associated major life threatening complications. Clear communication between the different type of health care service is also essential. At present, family doctors and other primary care health professionals appear to have incomplete, confused and occasional incorrect knowledge of obesity and nutritional issues.

Obesity Not Viewed As Serious Medical Condition

Obesity is generally not viewed as a serious medical condition by doctors, and so many fail to advise and treat the majority of their obese patients. Obesity tends to be treated only when a co-morbidity is present, rather than before the co-morbidity develops or is exacerbated by the obese state.

There is an urgent need for improved training of all health care workers, not only to improve levels of knowledge and skills in obesity management strategies but also to help overcome the negative attitudes that many health professionals currently exhibit towards obesity management and the obese.

Source: International Obesity Task Force (IOTF)

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