Table of contentsWork hard or work hardEpigeneticsThrifty hypothesisWhen in doubt, store fatDiabetes, a drawback of human evolutionEvolution of the immune systemConclusionThe 1990s , a time when everywhere you looked, children were playing; roam the streets, ride bikes, and play kickball in the side yards. Those days seem to have disappeared. The 2000s are considered the era of technology. Instead of seeing children playing tag or hide and seek. Children tend to capture video games such as Modern Warfare or Halo. It's sad to see America become an icon of laziness. The lack of community activity has led to an epidemic called obesity. Laziness is a general term used to describe obesity, but fatness cannot be described by just one single term. This topic has been studied for years in an attempt to identify a cause. “A person is traditionally considered obese if they exceed their ideal weight by more than 20%. This ideal weight must take into account the height, age, sex and build of the person” (Definition of obesity, 2016). In today's world, obesity controls society, and it is not slowing down anytime soon. Say no to plagiarism. Get a tailor-made essay on “Why violent video games should not be banned”?Get the original essayThe obesity epidemic caused by a variety of factors, including lack of exercise, poor diet, and evolution. Two of these three factors are common determinants in the interpretation of obesity. However, evolution is one of the main determinants in the context of obesity. This disease has gradually increased over time; Obesity trends began as early as the 1970s. Along with the spread of this epidemic, the fundamental elements that correspond to obesity include allele frequencies and phenotypes. Given the information provided by evolution, obesity could end once and for all. Work hard or work hard Evolution is the process of change or improvement over previous forms, also known as Darwinism. This source was the start of the current obesity epidemic in the United States. Obesity, however, is linked to environmental changes; Many studies have shown a correlation between obesity and genetics. This correlation is based on the idea that certain populations are at increased risk of metabolic diseases and obesity, while other communities have immunity. Obesity trend numbers are unstable in many communities, but they encompass an idea of ​​fitness. Fitness levels play a role in how well a community does in terms of body fat levels. A very active environment such as a farm or manual labor is more likely to encompass high metabolic rates and low body fat percentages. These are due to an increased amount of cellular energy released during a working day. Along with an increased work ethic, this prompts a comparison to a time before heavy machinery. Typically, before machines performed manual labor, humans performed all the tasks necessary for survival. This includes growing food, caring for livestock, and performing tasks relevant to ensuring a healthy and stable family life. These tasks were not as simple as they seem. Many newspapers mention the idea of ​​men working from dawn to dusk. Increased physical labor has led to many adaptations to the bodyhuman. An increased amount of glucose was necessary for survival and came primarily from fat storage. Additionally, calories received in meals are consumed abruptly due to the considerable amount of work done inside and outside the body. Today, machines have taken over society and continue to steal jobs from humans. Society has radically changed the ethics of human work and the tasks required to be accomplished using a human hand. These changes have caused the human body to adapt to a reduction in its daily caloric expenditure. Compared to the pre-machine, caloric and energy expenditure was higher than today. These environmental and mechanical advances caused the human body to shift to a relaxed state with agricultural and industrial jobs in mind. As previously stated, the body depends on a constant source of glucose to function, but given the circumstances of decreasing calorie expenditure, the body no longer requires as much energy as in previous decades. This lack of spending is another element of fat storage that leads to an increased risk of obesity. These statements conclude the idea of ​​a metabolism adapting by changing an environment also known as epigenetics. EpigeneticsEpigenetics is a term used to describe imprinting that changes gene expression without altering the DNA sequence (Herrera, 2011). This term suggests that environmental factors during crucial stages of development can lead to obesity. Adolescents shaped by environmental factors such as poor nutritional exposure and lifestyle choices managed by their parents. Because a child receives a poor diet during an important growth stage of their life, this can cause a change in gene expression, allowing the child to conform to their environmental factors. Modifying the expression of a gene allows the appearance of a new function. These changes can lead to harm later in life, including increased risk of obesity, metabolic disorders and cardiovascular disease. Altering gene expression creates an increased risk of harmful diseases due to the amendment. There are few, but far from all, nutritional factors that can contribute to obesity. For example, lifestyle habits are partly responsible for unhealthy trends. Lifestyle habits such as regular exercise can have a positive impact on epigenetics. Individuals may have a predisposition to obesity, but gene expression can be altered early in life through positive habits. Habits include regular physical activity and a healthy, growing diet. These two components allow the distribution of exosomes consisting of vitamins B6 and B12, which help regulate metabolism. Vitamin deficiencies can cause health problems, but they reflect gene expression in young children and adolescents. To regulate poor diet and lack of exercise, epigenetics regulates gene expression used to turn genes on and off. This system is a way for the human body to compete for survival during a stressful time. Thrifty Hypothesis In a previous section, calorie expenditure described part of the epigenetics and adaptation of the human work ethic. History shows a change in nutritional advancements and the availability of healthy foods. Evolutionary changes occurred due to our ancestors undergoing positive genetic alteration for energy storage (Sellayah, 2014). AccountGiven the environment of our ancestors, these individuals depended on an adequate amount of energy to perform an increased share of work. Due to the advancement of their line of work and the grueling hours spent on manual labor, it is easy to see why increased energy capacity was necessary. On the other hand, manual labor was not the only factor used to cause an increase in the amount of energy storage, but also lack of food availability or, in some environments, starvation. Starvation is the lack of availability of food, which is the driving factor in the economy hypothesis. This topic concerns significant genetic drift due to the absence of predation forces. Lack of ability to recover nutrients leads to increased deaths. These events forced individuals to search for food, keeping in mind that food can sustain an individual due to the scarcity of food. Continuing, the lack of food leads to an adaptation to increased energy storage that allows survival. The preceding years of famine and hard labor show how humans have evolved in the face of environmental changes around them. The lack of food sources has led to an increase in energy storage; however, this is not the case these years. Factors that fast food chains encourage the progression of obesity. These companies have sprung up across the world, creating a variety of easily accessible, cheap, and unhealthy foods for all consumers. Increased access to unhealthy foods helps reduce the perceived barrier for individuals to receive food. Earlier eras involved extra work to obtain a simple meal, such as hunting or fishing. Compared to today, if a person owns a bicycle, fills a vehicle with gas, or is within walking distance of a fast food chain, they can receive a meal for a dollar. Evolution has shown that energy storage is more important, but there is a decline which includes a reduction in caloric expenditure. Today, people have access to food, whereas in the past, famine could strike at any time. This is a great example of evolution based on societal changes. Society is a major contributor to human evolution. Given the availability of a cooked meal, individuals no longer search wooded areas for their meals. Meals before the fast food era included wild animals without any modifications. Today, our diet has changes such as hormones. Food consumption has increased along with portion sizes, high calories and most importantly, these meals do not leave an individual broke (Nielson, 2003). This leaves the question in mind; how does this imply an evolution? Earlier use of scavenging and hunting for food was a healthy activity to obtain nutrients such as protein and carbohydrates from berries and nuts. The human body began to naturally digest many products made from the earth without the interaction of other modifications. Due to the availability of foods that are unhealthy and contain high traces of saturated fats, our bodies have changed to store an increased amount of fat. Fast foods are convenient, but they induce an unhealthy lifestyle that can lead to undesirable results. In doubt, American obesity began due to selective pressures related to food scarcity. However, starvation may have caused the human body to adapt to nutrient-rich foods and have the.