Obesity And Overweight In The World
After a rough estimate, the world's 215 million obese people (body mass index (BMI)> 30 kg / m 2) or 7% of the population
. People who are overweight is about two to three times longer, which means that the world around one billion (= one fifth of all inhabitants of the planet) over and obese. Data last survey on the prevalence of obesity among adults in the U.S. (NHANES III) indicate that 31% of obese men and 34% of women. The largest percentage of obese has been reported between black women (48%) and Latin America (47%).
Obesity is rising not only in industrialized countries of the Western world but also in developing countries and in countries ruled by a communist system, including Chinese and in India and sub-Saharan Africa, where previously the poverty and hunger, obesity did not know. The prevalence of obesity also varies by sex, race and ethnic origin. It is also different between different regions within the same country, different also in the interior of the country and in the coastal zone and urban areas and rural areas.
Environmental Factors
Imparting habits, family habits at an early age indicating a specific way of feeding and behavior, and keep having congenital susceptibility to obesity. In a family where the mother and the father of a thick, it will almost certainly (in 80% of cases) thick, including children.
eating habits, excessive daily meals, often eating sweets, fatty foods, alcohol (a highly caloric, increases the secretion of digestive juices and appetite), sugary drinks ... a man who is accustomed to at a given time or in certain situations to eat, it will become in such a situation hungry, although no internal need for food (conditional reflex).
Physical inactivity, and if we are physically inactive, the food you eat does not consume energy, but it accumulates in the form of fat. Physical activity and diet reduces obesity in addition to the power of the factors that increase the risk of coronary disease.
Smoking, nicotine prevents lipolysis in fat.
Psychological causes
Dissatisfaction with oneself and not take himself, psychosocial problems originating from family, work and living environment are important factors accelerating pattern or an unhealthy lifestyle (excessive and / or unhealthy eating and insufficient exercise) and thus of overweight and obesity .
Psychological stress and stressful situations that can cause, are often the cause of over-consumption of food. Psychological causes are not direct causes of obesity. Psychological stress caused by frequent stress, can lead only to resort to food, which in this case a consolation.
Tainted mechanism regulating hunger and satiety
Brain works, which regulates hunger and satiety, the hypothalamus. In it are special nerve cells collected in different centers. One of the core of a center for the feeling of satiety, the other center for hunger pangs. Nerve cells in the center of hunger is aroused when blood sugar is reduced due to the increased level of insulin secreted by the pancreas, and when they released a second alarm hormones. These cells can be turned on and the smell of food, look at the food, taste for food, talk about food. Excited center for hunger abated center for satiety. After eating, blood sugar rises and stimuli for hunger disappear. Both center also affect protein substances that are released into the brain cells. These are opiates, which arouse the hunger center.
by: TwertBrown
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