Obesity: Effects Of Genetics And The Environment

Obesity has been a growing problem in the U.S. for more than a decade. Various reasons and theories are thrown around as to the cause of this severe problem by psychologists, dietitians, and professors trying to pinpoint a single cause. Due to America’s vast supply of resources, luxurious living standards, and moral of the country, there is no one cause for obesity contrary to advertisements offering a quick-fix drug. America’s obesity problem is rooted much deeper than just cheap fast food and poor choices. Medical conditions, influence of genes, unhealthy lifestyles, and mental illnesses are all contributors towards obesity in any one person. Obesity is a serious problem in America with multiple contributors and one lone solution

Genetic research of obesity was partly successful in establishing obesity in model organisms – rodents where obesity occurs spontaneously together with other pathological aspects (insulin resistance, …). The main cause of monogenic obesity in these model organisms are common mutations always present in only one gene. Results of research on model organisms allowed us to understand biological mechanisms of calorie intake and regulation and maintenance of body weight. The most important insight into obesity was achieved in 1994 after discovery of ob gene encoding for leptin. In two years period, using screening method, candidate homologous genes, selected on genetic study basis on mice, another five genes were identified. Mutations on these genes were found to be the cause of autosomal recessive or dominant monogenic obesity. Products of these genes are leptin and its receptor, proopiomelanocortin (POMC) melanocortin receptor 4 (MC4R) and

Genes control almost every aspect of human life, and when it comes to weight there is no exception. Little is known, however, how much of an individual’s genes actually control the weight of certain individuals. Body fat can vary from person to person, yet some people have always carried more weight than others. Often times, when one person is overweight in the family, most of the other individuals in the same family are overweight as well. However, more than just genetics can go into being overweight, and a person’s genes are not the end all be all of obesity. Many times the environment surrounding people who are obese contributes to the overall weight of the individual, and when obesity promoting genes are mixed

Adult obesity rates have rapidly increased since 1960, with at least one-third of the population classified as obese today. It is believed that 60-70% of the risk factors for developing obesity are genetic and are genes that are generally considered to dictate food intake. The environment also significantly affects an individual’s risk for obesity, and poverty level is a huge factor as well. Of the ten states with the highest obesity rates, nine of them among the nation’s poorest states.

Obesity has been measured or defined in various ways. Many researchers have differing opinions on the origins and effects of obesity. The rapidly increasing rates of obesity are often linked to a high calorie diet and little to no physical activity. Although obesity is seen as a disease that affects a person’s weight, it actually affects a lot more than that. Obesity can affect individuals in both adolescence and adulthood, their families, and the healthcare system. From an outside viewpoint, obesity looks like a disease that careless, inactive people develop. Not always is this the case. Obesity is not a disease that affects solely the weight of a person. To be considered obese, your BMI (body mass index) would have to be 30 or higher. Almost 70 percent of Americans are either overweight or obese. Not only does obesity affect the weight of a person, it can also lead to increased risk for diabetes, high blood pressure, heart disease, sleep apnea, and many other things. Questions posed on this dreadful disease by many people are on the origin of the disease, the effects and exponential growth of the disease, and the actions that are being taken to help provide a healthier environment for Americans and to establish programs and preventative methods across the country to help fight the ever increasing obesity rate.

Nguyen and El-Seraq (2010) report that obesity is “a complex interaction between the environment, genetic predisposition, and human behavior” (p. 4). According to Glassman, et al. (2013) there are a number of factors that can lead to obesity, including heredity, gender, race, emotions, inactivity, and diet. Cristakis and Fowler (2007) found that social networking between family members and friends can also influence becoming obese. If one or more family members or friends are obese, chances are greater that others within the group will be obese. This can lead to entire

Consumption of the wrong foods and no exercise cause obesity to step into the lives of many within America but on the other side of fence, complicated reasoning can run behind factors that hold a place with the individual’s overall characteristics, attitude, genetics tendencies and environment. The Effectiveness of obesity is the medical cost that takes place treat individuals that experience obesity; this increases the family expenses and causes

Although the mechanism of obesity development is not fully understood, it is confirmed that obesity occurs when energy intake exceeds energy expenditure. There are multiple etiologies for this imbalance, hence, and the rising prevalence of obesity cannot be addressed by a single etiology (Dehghan et al., 2005, p.

Obesity is a highly prevalent condition in America, affecting approximately one third of the adult American population. Obesity can be caused by a myriad of factors: genetics,

indicate that inherited genetic variation is an important risk factor for obesity. It was also pointed

Since the 1980’s, there has been a steady increase in the percentage of people who are obese in every country around the world. Americans have the greatest percentage of obesity among adults at just over thirty percent. What has caused this epidemic to rise so uncontrollably? The growth of obesity in America is primarily caused by environmental factors rather than genetic factors because only a small amount of obese people have the genes that contribute to obesity.

With over 22.5% of the current U.S. population considered to be clinically obese, compared to only 14.5% in 1980, there does not seem to be a cessation of this epidemic in sight (Hill & Peters, 1998). Goran and Weisners' (2000) proposal that "... the inherently lower resting metabolic rate in women versus men is responsible for the higher adiposity rates in women..." is wanting, especially since the potentially modifiable factors of; less physical strength, less daily free-living physical activity, and lower total energy expenditure are more likely the cause of the differences in observed adiposity between men and women. Since our genetic makeup has not appreciably changed in the last twenty years, we cannot strictly attribute the explosion of obesity to genetics. As these biological causes of obesity are disproved, a focus on the environment as a reason for obesity is taking centre-stage.

Adult obesity is a serious health issue to address. It can result from genetics or behaviors including dietary patterns and level of physical activity. “Additional contributing factors in our society include the food and physical activity environment, education and skills, and food marketing and promotion” ("Adult Obesity Causes & Consequences," 2017).

The topic that I have chosen to look at is obesity. The aim of this topic is to find out whether “the ignorance of genetics as a contra factor of obesity”. I have chosen to look at this topic because obesity is concerns me. Obesity has always been a bid debate for a long time now and I was intrigued to find out more about the topic and the cause of obesity. The fact that obesity has made deadlines news in recent years. There are a lot of misconceptions about obesity such as overweight is caused by a sow metabolism. There have been a lot of beliefs and myths about obesity in society today and he above myths is on of them. According to Donnellan (1998) ‘ ‘people who are overweight have told their doctors that they eat no more and

Everybody knows the child that can eat any type of food all day and never seem to gain weight. This occurrence has led researchers to investigate the role that genetics plays in childhood obesity. Not all children who are inactive or who eat poorly are obese, much in the same way that some obese children eat fairly healthy, and exercise moderately. Heredity has recently been shown to influence body fat percentage, regional fat storage, and the body?s response to overeating (Rush, 1). Children who have obese parents are 80% more likely to be obese than their lean parented counterparts (Buffington, 16). This familial correlation is contributed to genetics as well as the parents eating habits. Children with obese parents typically aren?t taught the correct way to choose when and what food to eat, leading to poor eating habits and eventually obesity. Many genetic defects can have a significant effect on obesity such as variable thyroid activity and pituitary defects. Abnormalities in any one of these regulators could be responsible for appetite abnormalities and weight gain. Furthermore, obesity leads to defects in appetite regulation, hormone production, and metabolic events (Oklahoma Cooperative, 4) that are responsible for further weight gain,