Obesity - Chronic disease

 

OBESITY

    Overweight and obesity are major risk factors for a number of chronic diseases, including cardiovascular diseases such as heart disease and stroke, which are the leading causes of death worldwide. Being overweight can also lead to diabetes and its associated conditions, including blindness, limb amputations, and the need for dialysis.

    Overweight and obesity are defined as abnormal or excessive fat accumulation that presents a risk to health. A body mass index (BMI) over 25 is considered overweight, and over 30 is obese. The issue has grown to epidemic proportions, with over 4 million people dying each year as a result of being overweight or obese in 2017 according to the global burden of disease. 

    Rates of overweight and obesity continue to grow in adults and children. From 1975 to 2016, the prevalence of overweight or obese children and adolescents aged 5–19 years increased more than four-fold from 4% to 18% globally.

    Obesity is one side of the double burden of malnutrition, and today more people are obese than underweight in every region except sub-Saharan Africa and Asia. Once considered a problem only in high-income countries, overweight and obesity are now dramatically on the rise in low- and middle-income countries, particularly in urban settings. The vast majority of overweight or obese children live in developing countries, where the rate of increase has been more than 30% higher than that of developed countries.

Causes obesity 



    Although there are genetic, behavioral, metabolic and hormonal influences on body weight, obesity occurs when you take in more calories than you burn through normal daily activities and exercise. Your body stores these excess calories as fat.
  • Food and Activity. People gain weight when they eat more calories than they burn through activity. ...
  • Environment. The world around us influences our ability to maintain a healthy weight. ...
  • Genetics. ...
  • Health Conditions and Medications. ...
  • Stress, Emotional Factors, and Poor Sleep.

Prevention & Control of Obesity

    Many of the causes of overweight and obesity are preventable and reversable. However, no country has yet to reverse the growth of this epidemic. Although other factors are involved, the fundamental cause of obesity is an imbalance of calories consumed and calories expended. As global diets have changed in recent decades, there has been an increase in the consumption of energy-dense foods high in fat and free sugars. There has also been a decrease in physical activity due to the changing nature of many types of work, more access to transportation and increased urbanization.

    Lowering the risk of overweight and obesity includes reducing the number of calories consumed from fats and sugars, increasing the portion of daily intake of fruit, vegetables, legumes, whole grains and nuts, and engaging in regular physical activity (60 minutes per day for children and 150 minutes per week for adults). In babies, studies have shown that exclusive breastfeeding from birth to 6 months of age reduces the risk of infants becoming overweight or obese.



 

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