Read PDF Madam, childhood obesity has reached an epidemic proportion in developing countries, including Pakistan. A Karachi-based survey in showed a prevalence of 5. Pakistan, being poor in economic and health indicators, cannot afford the emerging costs of obesity epidemics. Parent-based interventions can be of great importance if we want to start the prevention of childhood obesity from home.
Background Obesity is a condition in which body weight and body fat are greater than what is considered healthy for a given height. Obesity is commonly defined as having a BMI greater than Having a high BMI can be a serious health hazard; obesity is associated with high blood pressure, osteoarthritis, diabetes, heart disease, respiratory problems, and some cancers.
Unfortunately, the prevalence of obesity has risen to epidemic proportions over the past couple of decades. In the United States, the majority of adults are overweight and over 30 percent are categorized as obese.
Childhood obesity has also become more common—approximately 15 percent of children and adolescents are obese—which has led to an increase in the incidence of health problems that were once rare among children.
Both genetic and environmental factors play a role in the development of obesity. Individuals with varying genetic predispositions may respond differently to the same environmental conditions; for example, some people may be genetically disposed to overeat or to store body fat more easily.
In other words, within a population of people who share similar environmental and behavioral conditions such as food quality and physical activitythere will be a range of body types. The influence of genes on obesity is strong; there is evidence that 70—80 percent of the variation among individuals in body fatness is due to genetic factors.
Furthermore, specific genes have been discovered to be associated with obesity. For example, a small percentage of people estimated to be about one in 1, have a genetic mutation that affects the melanocortin 4 receptor MC4R —a receptor in the brain that receives signals to regulate appetite via the hormone leptin.
This genetic mutation changes the surface of MC4R so that it is unable to process the message to control hunger. As a result, people with an MC4R mutation are more susceptible to obesity because their brains do not receive the signal to suppress the urge to eat.
With no signal to tell them that they are full, they continue to feel hungry even after their body no longer needs additional energy. However, the genetic influence is only part of the story—lifestyle is also critically important in contributing to obesity.
The recent increase in the percentage of people categorized as obese cannot be attributed to genetic changes that favor obesity genetic changes of populations occur much more slowly ; the increase in obesity is more likely a result of sedentary lifestyles and calorie-rich diets that cause an energy imbalance.
Body weight is maintained by consuming as many calories as are used, and a balanced diet of healthy foods contributes to overall health. Current lifestyles often support excess calorie consumption and not enough physical activity, which result in weight gain and poorer health.
To learn more about appetite, check out The Science Behind Appetite. To learn more about nutrition, check out Body Needs. Questions for Discussion What are some of the factors that contribute to the obesity problem in our society?
Discuss sensitive issues of body structure and the feelings of others in relation to the video. What is leptin, and what role does it play in weight gain? What role does the melanocortin 4 receptor, or MC4R, play in obesity?
If someone asks you if obesity is genetic, how would you respond?Sedentary person Physically active person What are the possible health and physical risks for this person’s lifestyle?
What recommendations would you make to create a healthier life for this person? Do this person’s parents play a genetically influential role in their weight or health? Consider the following questions concerning sedentary and physically active persons.
nutrition needs?What are the possible health and physical risks for this persons lifestyle?What recommendations would you make to create a healthier life for this person?Do this persons parents play a genetically influential role in their weight or health.
Questions for both lifestyles Sedentary person Physically active person What are this person’s nutrition needs?
How Health and Lifestyle Choices Can Change Your Genetic Make-Up People who were genetically at the very highest risk of having a heart attack (they had two copies of the specific genes. Genetics appear to play an increasingly important role in explaining the variation in weight, height, and BMI from early childhood to late adolescence, particularly in boys. Common environmental factors exert their strongest and most independent influence specifically in . Anywhere between 30 to 70% of our body weight is influenced by our genes. And the tendency to be obese is quite common among humans, as evident in high obesity rates, regardbouddhiste.com has led to the proposal of what is known as the thrifty gene hypothesis.
What are the possible health and physical risks for this person’s lifestyle? What recommendations would you make to create a healthier life for this person? Do this person’s parents play a genetically influential role in their weight or health? Genetics or Lifestyle: What's the Cause of Being Overweight?
Many people realize and understand that their family history and genetics plays a role in their health and life when it comes to heart disease, diabetes, obesity, breast cancer, alcoholism and other diseases. No . Antenatal Influences on the Emergence of Risk Factors for Chronic Diseases The fetal origins of adult chronic diseases play a particularly important role in Sub-Saharan Africa countries.
The adequacy of the mother's nutrition before and during pregnancy is the first . How Health and Lifestyle Choices Can Change Your Genetic Make-Up People who were genetically at the very highest risk of having a heart attack (they had two copies of the specific genes.