The life expectancy of the Brazilian population increased from 71.16 years in 1998 to 76.2 years in 2016, according to the Brazilian Institute of Geography and Statistics (IBGE). The data indicate a significant progress compared with 55.50 years in 1940. According to the IBGE, Brazil will need some time to catch up with Japan, Hong Kong (China), Switzerland, Iceland, Australia, France and Italy, where the average life expectancy is already over 81. Research has shown that Brazil would achieve that level by 2030.

Demographic projections foresee the continuation of this process, estimating a life expectancy in Brazil around 77.4 years in 2020. The decline in mortality at young ages and the increase in longevity, combined with the decline of fecundity and the accentuated increase of degenerative chronic diseases, caused a rapid process of demographic and epidemiologic transition, imposing a new public health agenda in the face of the complexity of the new morbidity pattern.

Obesity in Brazil is a growing health concern. 52.6 percent of men and 44.7 percent of women in Brazil are overweight. 15% of Brazilians are obese. The Brazilian government has issued nutrition guidelines which have caught the attention of public health experts for their simplicity and their critical position towards the food industry. The guidelines are summarized at the end of the document as follows:

1. Prepare meals using fresh and staple foods.

2. Use oils, fats, sugar, and salt only in moderation.

3. Limit consumption of ready-to-eat food and drink products.

4. Eat at regular mealtimes and pay attention to your food instead of multitasking. Find a comfortable place to eat. Avoid all-you-can-eat buffets and noisy, stressful environments.

5. Eat with others whenever possible.

6. Buy food in shops and markets that offer a variety of fresh foods. Avoid those that sell mainly ready-to-eat products.

7. Develop, practise, share, and enjoy your skills in food preparation and cooking.

8. Decide as a family to share cooking responsibilities and dedicate enough time for health-supporting meals.

9. When you dine out, choose restaurants that serve freshly made dishes. Avoid fast-food chains.

10. Be critical of food-industry advertising.

Growth stunting is identified by comparing measurements of children's heights to the World Health Organization 2006 growth reference population: children who fall below the fifth percentile of the reference population in height for age are defined as stunted, regardless of the reason. The lower than fifth percentile corresponds to less than two standard deviations of the WHO Child Growth Standards median.

As an indicator of nutritional status, comparisons of children's measurements with growth reference curves may be used differently for populations of children than for individual children. The fact that an individual child falls below the fifth percentile for height for age on a growth reference curve may reflect normal variation in growth within a population: the individual child may be short simply because both parents carried genes for shortness and not because of inadequate nutrition. However, if substantially more than 5% of an identified child population have height for age that is less than the fifth percentile on the reference curve, then the population is said to have a higher-than-expected prevalence of stunting, and malnutrition is generally the first cause considered.

Information from the Argentina's Ministry of Health shows the following progression recorded since 2005 when was launched the National Survey for Risk Factors, : "Encuesta Nacional de Factores de Riesgo" (ENFR)

Source

- 2005 = 14.6%

- 2009 = 18%

- 2013 = 20.8%

- 2005-2013 period variation = 42,5%

6 out of 10 registered as overweight and 2 out of 10 as obese.

The data of the survey was gathered by 1,000 surveyors who interviewed 32,365 adults older than 18 years in cities larger than 5,000 inhabitants around the nation. The 70.7% (32.365) of the people that were asked to take survey did accept to be interviewed. ganso

In summary, key policy interventions for the prevention of stunting are:

- Improvement in nutrition surveillance activities to identify rates and trends of stunting and other forms of malnutrition within countries. This should be done with an equity perspective, as it is likely that stunting rates will vary greatly between different population groups. The most vulnerable should be prioritized. The same should be done for risk factors such as anemia, maternal under-nutrition, food insecurity, low birth-weight, breastfeeding practices etc. By collecting more detailed information, it is easier to ensure that policy interventions really address the root causes of stunting.

- Political will to develop and implement national targets and strategies in line with evidence-based international guidelines as well as contextual factors.

- Designing and implementing policies promoting nutritional and health well-being of mothers and women of reproductive age. The main focus should be on the 1000 days of pregnancy and first two years of life, but the pre-conception period should not be neglected as it can play a significant role in ensuring the fetus and baby's nutrition.

- Designing and implementing policies promoting proper breastfeeding and complementary feeding practice (focusing on diet diversity for both macro and micronutrients). This can ensure optimal infant nutrition as well as protection from infections that can weaken the child's body. Labor policy ensuring mothers have the chance to breastfeed should be considered where necessary.

- Introducing interventions addressing social and other health determinants of stunting, such as poor sanitation and access to drinking water, early marriages, intestinal parasite infections, malaria and other childhood preventable disease (referred to as “nutrition-sensitive interventions”), as well as the country's food security landscape. Interventions to keep adolescent girls in school can be effective at delaying marriage with subsequent nutritional benefits for both women and babies. Regulating milk substitutes is also very important to ensure that as many mothers as possible breastfeed their babies, unless a clear contraindication is present.

- Broadly speaking, effective policies to reduce stunting require multisectoral approaches, strong political commitment, community involvement and integrated service delivery.

Obesity rates in Italian two-year-olds are the highest in Europe with a rate of 42%. Causes are lack of a Mediterranean diet and lifestyle choices such as exercise and getting enough sleep.

Obesity in China is a major health concern according to the WHO, with overall rates of obesity below 5% in the country, but greater than 20% in some cities. This is a dramatic change from times when China experienced famine as a result from ineffective agriculturalization plans such as the Great Leap Forward.

Currently, obesity in China is mostly confined to the cities where fast food culture and globalization have taken over, in comparison to poorer rural areas. Despite this concentration of obesity, the sheer size of China's population means that over one fifth of all one billion obese people in the world come from China.

Obesity in Argentina is a growing health concern with health officials stating that it is one of the leading causes of preventable deaths in the Argentina. According to FAO/UNO, the prevalence of obesity among adults in Argentina was of 29.4% in 2008.

Several studies have shown that obese men tend to have a lower sperm count, fewer rapidly mobile sperm and fewer progressively motile sperm compared to normal-weight men.

Several studies have shown that obese men tend to have a lower sperm count, fewer rapidly mobile sperm and fewer progressively motile sperm compared to normal-weight men.

A lack of exercise is a cause of obesity. A study showed that children only got 30 minutes of exercise instead of the hour that is required. Proper skeletal development, muscle building, heart and circulation are among the benefits of exercising during childhood.

Obesity in Saudi Arabia is a growing health concern with health officials stating that it is one of the leading causes of preventable deaths in Saudi Arabia. According to "Forbes", Saudi Arabia ranks 29 on a 2007 list of the fattest countries with a percentage of 68.3% of its citizens being overweight (BMI>25). Compounding the problem, according to a presentation at the 3rd International Obesity Conference in February 2014, is that obesity-related surgeries are not covered under Saudi healthcare.

Body Mass Index (BMI) is a common and useful measurement of body fat that helps individuals understand the difference between being overweight and obese. The system can be used to calculate a persons Body Mass Index (BMI) by dividing their weight (in kilograms) by the square of their height (in meters). According to the World Health Organisation (2015) a BMI greater than or equal to 25 kg/m2 in adults is overweight and greater than or equal to 30 kg/m2 regards individuals as obese. Using the BMI method, however, to measure a child's excess weight can encounter regular issues. The Body Mass Index is used to decipher an individuals excess body weight but not their excess body fat. In this way the measurements taken from a child who is at different stages of their sexual maturation compared to another may alter the reliability of the data. Other issues that may affect the results surrounding this method for children and adolescents includes their age, sex, ethnicity muscle and bone mass, their height as well as their sexual maturation levels. Using the percentile ranking to determine whether or not a child or adolescent between 2–20 years old is overweight or obese inherits the same techniques as a BMI except the interpretation of the data collected is varied. Information gathered using the percentile ranking takes into consideration the childs age and sex, recognising that the amount of body fat regularly changes with age and sex. The BMI-for-age highlights the values among children of the same sex and age and categorises overweight adolescents as being between the 80th percentile and less than the 95th percentile. Obese children are classified as being equal to or greater than the 95th percentile.

Although calculating an individuals BMI is the most recommended indicator it doesn't distinguish the risk of disease. Regular monitoring of fat distribution, genetics and fitness levels should be maintained to assess the likelihood of disease. Alternative ways in which an individual can have their weight assessed, other than a BMI test, includes measuring the circumference of their waist or using the skin fold test.

Several studies have shown that obese men tend to have a lower sperm count, fewer rapidly mobile sperm and fewer progressively motile sperm compared to normal-weight men.

Obesity in Germany has created a cholesterol problem. High cholesterol is known to cause premature death, angina, heart disease and strokes.

There has been an increase of children with Type 1 diabetes between 1996 and 2011. Diabetics are at higher risk for complications such as heart attack and stroke. In Germany, 600,000 people suffered from diabetes near the end of World War II compared to eight million now.

Obesity can increased risk for secondary diseases such as diabetes, cardiovascular disease, certain cancers and Alzheimer's. Children who get diabetes can expect to lose 10 to 15 years off of their lives. Diabetes also affect the eyes, kidneys and nerves in the legs.

Obesity is a "very strong promoter of cancer." Obesity causes an increased risk for colon cancer and breast cancer.

The medical condition of being overweight or obesity is defined as "abnormal or excessive fat accumulation that may impair health". It is measured through the Body Mass Index (BMI), defined as a person's weight, in kilograms, divided by the square of the person's height, in meters. If an individual has a BMI of 25–29, he or she is overweight. Having a BMI of 30 or more means an individual is obese. The greater the BMI, the greater the risk of chronic diseases as a result of obesity. These diseases include cardiovascular diseases, diabetes, musculoskeletal disorders, cancer, and premature death.

Obesity in North Africa and the Middle East is a notable health issue. In 2005, the World Health Organization measured that 1.6 billion people were overweight and 400 million were obese. It estimates that by the year 2015, 2.3 billion people will be overweight and 700 million will be obese. The Middle East, including the Arabian Peninsula, Eastern Mediterranean, Turkey and Iran, and North Africa, are no exception to the worldwide increase in obesity. Subsequently, some call this trend the New World Syndrome. The lifestyle changes associated with the discovery of oil and the subsequent increase in wealth is one contributing factor.

Urbanization has occurred rapidly and has been accompanied by new technologies that promote sedentary lifestyles. Due to accessibility of private cars, television, and household appliances, the population as a whole is engaging in less physical activity. The rise in caloric and fat intake in a region where exercise is not a defining part of the culture has added to the overall increased percentages of overweight and obese populations. In addition, women are more likely to be overweight or obese due to cultural norms and perceptions of appropriate female behavior and occupations inside and outside of the home.

Obesity in the United Kingdom is a significant contemporary health concern, with officials stating that it is one of the leading preventable causes of death. In February 2016, Health Secretary Jeremy Hunt described rising rates of childhood obesity as a "national emergency".

Data published as a part of the World Health Organisation (WHO) study in 2014 indicated that 28.1% of adults in the United Kingdom were recognised as clinically obese with a Body Mass Index (BMI) greater than 30. In 2014 62% of adults in England were classified as overweight (a body mass index of 25 or above) or obese, compared to 53% 20 years earlier. More than two-thirds of men and almost six in 10 women are overweight or obese.

Experts have predicted that by the year 2020 one third of the United Kingdom population could be obese. Rising levels of obesity are a major challenge to public health. There are expected to be 11 million more obese adults in the UK by 2030, accruing up to 668,000 additional cases of diabetes mellitus, 461,000 cases of heart disease and stroke, 130,000 cases of cancer, with associated medical costs set to increase by £1.9–2.0B per year by 2030. Adult obesity rates have almost quadrupled in the last 25 years.

For children, data from the Health Survey for England (HSE) conducted in 2014 and examining patterns of overweight and obesity among children aged 2–15, showed that 17% of children were obese and an additional 14% of children were overweight.

Combing three years of data (2012, 2013 and 2014) Public Health England identified Barnsley, South Yorkshire as the local authority with the highest incidence of adult obesity (BMI greater than 30) with 35.1%. Data from the same study revealed that Doncaster, South Yorkshire was the local authority with the highest overall excess weight with 74.8% of adults (16 years and over) with a BMI greater than 25. In previous Public Health England studies based on 2012 data, Tamworth in Staffordshire had been identified as the fattest town in England with a 30.7% obesity rate.

Obesity in Germany has been increasingly cited as a major health issue in recent years. The federal government has declared this to be a major issue.

Data released by the World Health Organisation in 2014 showed that while an issue of growing concern, within the European Union, Germany had a lower incidence of overweight and obese adults as a percentage of the total population at 54.8% in comparison with France at 60.7%, Spain at 60.9% or the United Kingdom at 63.4%.

Some newborns are oversized. This is more often a problem associated with a medical disorder. Unlike adults, neonates do not develop obesity. The number one cause of big babies is diabetes in their mother. The baby is not considered obese. Newborns who are born to mothers who are considered obese have a 49% decrease in likelihood of mortality.

Obesity in the United States has been increasingly cited as a major health issue in recent decades, resulting in diseases such as coronary heart disease that lead to mortality. While many industrialized countries have experienced similar increases, obesity rates in the United States are the highest in the world.

Obesity has continued to grow within the United States. Two of every three American men are considered to be overweight or obese, but the rates for women are far higher. The United States contains one of the highest percentage of obese people in the world. An obese person in America incurs an average of $1,429 more in medical expenses annually. Approximately $147 billion is spent in added medical expenses per year within the United States. This number is suspected to increase approximately $1.24 billion per year until the year 2030.

The United States had the highest rate of obesity within the OECD grouping of large trading economies. From 23% obesity in 1962, estimates have steadily increased. The following statistics comprise adults age 20 and over. The overweight percentages for the overall US population are higher reaching 39.4% in 1997, 44.5% in 2004, 56.6% in 2007, and 63.8% (adults) and 17% (children) in 2008. In 2010, the Centers for Disease Control and Prevention (CDC) reported higher numbers once more, counting 65.7% of American adults as overweight, and 17% of American children, and according to the CDC, 63% of teenage girls become overweight by age 11. In 2013 the Organisation for Economic Co-operation and Development (OECD) found that 57.6% of American citizens were obese. The organization estimates that 3/4 of the American population will likely be overweight or obese by 2020. The latest figures from the CDC as of 2014 show that more than one-third (36.5%) of U.S. adults age 20 and older and 17% of children and adolescents aged 2–19 years were obese. A second study from the National Center for Health Statistics at the CDC showed that 39.6% of US adults age 20 and older were obese as of 2015-2016 (37.9% for men and 41.1% for women).

Obesity has been cited as a contributing factor to approximately 100–400 000 deaths in the United States per year and has increased health care use and expenditures, costing society an estimated $117 billion in direct (preventive, diagnostic, and treatment services related to weight) and indirect (absenteeism, loss of future earnings due to premature death) costs. This exceeds health care costs associated with smoking and accounts for 6% to 12% of national health care expenditures in the United States.

The causes of childhood obesity can be based on both a combination of individual choices and socio-environmental adaptions with genetic factors playing an important role also.

According to Forbes, Greece ranks 16 on a 2007 list of fattiest countries with a percentage of 65.5% of its citizens with an unhealthy weight. This may be a surprise to most individuals because in the past Mediterranean countries like Greece were known to live a pretty healthy lifestyle. The Mediterranean diet was developed based on the food patterns in these different countries, Greece being a main one. In the past the people of Greece consumed a diet consisting mainly of fish, fruit, vegetable, and wine, limiting meats. These countries also were fairly active which helps to keep them healthy.

Today’s European countries are moving away from this Mediterranean lifestyle and towards a more Western way of life. Indulging on the fast foods and limited daily activity are to blame on for this increase in obesity in Greece . An article from the Associated Press states that obesity rates in some European countries are higher than that of the United States.

Greece’s growing health concerns related to obesity are becoming an issue that was not evident in the past because of an increase in consumption of high fat, high calorie, fast foods and decreased levels of activity. Obesity brings on health concerns such as diabetes and cardiovascular disease. Greece is adopting a western style of eating and straying away from the active lifestyles they once possessed.

Inactivity is blamed for the lack of fitness in men in the canton of Zurich.

Obesity in Pakistan is a health issue that has attracted concern only in the past few years. Urbanisation and an unhealthy, energy-dense diet (the high presence of oil and fats in Pakistani cooking), as well as changing lifestyles, are among the root causes contributing to obesity in the country. According to a list of the world's "fattest countries" published on "Forbes", Pakistan is ranked 165 (out of 194 countries) in terms of its overweight population, with 22.2% of individuals over the age of 15 crossing the threshold of obesity. This ratio roughly corresponds with other studies, which state one-in-four Pakistani adults as being overweight.

Research indicates that people living in large cities in Pakistan are more exposed to the risks of obesity as compared to those in the rural countryside. Women also naturally have higher rates of obesity as compared to men. Pakistan also has the highest percentage of people with diabetes in South Asia.

According to one study, "fat" is more dangerous for South Asians than for Caucasians because the fat tends to cling to organs like the liver instead of the skin.

According to 2007 statistics from the World Health Organization (WHO), Australia has the third-highest prevalence of overweight adults in the English-speaking world.Obesity in Australia is an "epidemic" with "increasing frequency." "The Medical Journal of Australia" found that obesity in Australia more than doubled in the two decades preceding 2003, and the unprecedented rise in obesity has been compared to the same health crisis in America. The rise in obesity has been attributed to poor eating habits in the country closely related to the availability of fast food since the 1970s, sedentary lifestyles and a decrease in the labour workforce.