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Effects of social media on human behaviour
Charles Robert Darwin and his theory of evolution
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Charles Darwin’s theories on evolution state that all life on earth developed gradually through natural selection over millions of years. By tracing two organism’s branching biological lineage backwards, at some point the two organisms would have been related to each other in one way or another. William McNeill contends that at a basic level that all living things behave alike and that humans are actually “macroparasites.” Well, we all know old habits are hard to change and there should be no doubt that humans and other organisms act like one another in order to continue their lives and species.
Disease is something that affects all of us, but what actually is disease? Many things cause disease. Some diseases can be contracted through drinking tainted water, others while having unprotected sex, and sometimes the mutations that occur during conception. Disease is basically anything that impacts an organism in a way that puts that organism at a disadvantage in a certain environment. Mental health problems and alcoholism are both things referred to as disease because both things put the person suffering at a disadvantage in their community. Diseases can be seen through various signs and symptoms that occur as a result of having the disease. For example, someone addicted to Facebook will show symptoms such as putting off worldly responsibilities or sleep to chat with friends on the internet. So, diseases can come in all shapes and forms.
Epidemics began to first manifest themselves around the time man-made the switch from hunting and gathering to livestock and agriculture. The close relationship shared between humans and animals allowed for bacteria and viruses to be passed from the animals to the humans. In most cases...
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...o matter which way an organism spreads, the mechanism by which it operates is very similar. Biological success is measured through reproduction rather than the age to which something lives. Humans have used disease to their advantage in to create a better society for themselves. Biological success says that a successful individual will produce more children, who then produce more children creating a legacy. In this respect, humans are very successful parasites. According to Merrium-Websters online dictionary, a parasite is “something that resembles a biological parasite in dependence on something else for existence or support without making a useful or adequate return.” Humans have made a way of life enslaving and living off of other humans and organisms. In the end one thing is certain, humans and parasites are a lot more similar than we would like to admit.
Plagues and Peoples written by William H. McNeill follows the patterns of epidemics and endemics within human history. It is within this history that McNeill finds parallels between diseases and humans in the forms of microparasitism and macroparasitism. Merely from the title, McNeill gives equal importance to viruses and humankind. In several instances, humans behave the same way viruses, bacteria, and parasites do in order to survive and to compete. Surprisingly enough, McNeill’s overarching theme can be summarized using his last sentence, asserting that “Infectious disease which antedated the emergence of humankind will last as long as humanity itself, and will surely remain, as it has been hitherto, one of the fundamental parameters and
“There is no real definition for disease. ” This is a claim that Melody Petersen makes in her book. Most would define disease as an abnormality in regards to health. This seems logical, but it leads to the following question : what is “normal” ? What is the definition of “healthy” ? Asking major pharmaceutical companies these questions will most likely lead to the following conclusion: disease is malleable. In other words, it is open to a certain level of interpretation. According to Petersen, giant drug manufacturers consider disease to be a business. Thus, they create a market out of people’s physical or emotional shortcomings. In 1998, Pharmacia, a large American manufacturer of prescription drugs,
the definition of parasite, is something that hurts. for ever. this parasite, was a landmine. I had good medical attention. But once i returned home, I finally left. I wanted to leave. there were rockets, raining down in every place i looked. those rockets stole my family. we couldn't stay. so we fled. the last time i had a true education, was when i entered high school. between 2nd grade and 9th the education i had in my birth place, that wasn't any kind of education. i wanted more. and there was nothing there for me to want
William H. McNeill makes a monumental contribution to the knowledge of humanity in his book Plagues and Peoples. He looks at the history of the world from an ecological point of view. From this viewpoint the history of human civilization is greatly impacted by changing patterns of epidemic infection. Plagues and Peoples suggests that "the time scale of world history...should [be] viewed [through] the "domestication" of epidemic disease that occurred between 1300 and 1700" (page 232). "Domestication" is perceived "as a fundamental breakthrough, directly resulting from the two great transportation revolutions of that age - one by land, initiated by the Mongols, and one by sea, initiated by Europeans" (page 232). This book illustrates how man's environment and its resident diseases have controlled human migration, as well as societal successes and failures. McNeill discusses the political, demographical, and psychological effects of disease on the human race. He informs his audience that epidemics are still a viable threat to society, and warns of potential future consequences.
Merriam-Webster defines ‘parasite’ as ‘an organism that lives in or on another organism and benefits by deriving nutrients at the host 's expense’.
the animals and cattle as well. The disease was so contagious that touching even an object that had
Many of these diseases originate from animal populations. Humans’ interaction with the environment, and animals contribute to the rate and prevalence of disease. All three areas are interconnected. One Health is a concept that views human, animal, and environmental health as one area of health. The three entities, when separated can hinder each other and delay progress. The opposite is also true. When public health officials recognize the correlation between human, animal, and environmental health, advancements and innovation can occur. Other public health issues are present in relation to spread of infectious disease between humans and animals. People must know how to cook animal products in order to kill pathogens. Many diseases are also transferred when humans disrupt ecosystems. These are areas where public health has the opportunity to make progress. The issues that infectious diseases cause occur across the globe. In addition, One Health concepts can be applied to populations all over the
This disease may be on the brink of being eradicated entirely but that doesn’t stop it from being one of the grossest things that anyone has ever seen. The parasite enters the body via unsafe drinking water. When people drink water infected with water fleas that have have been hosting the larvae of the parasite. There are no symptoms, to begin with, but about one year later, blisters on the feet or legs begin to develop and then the adult fully developed worm crawls out of the host body over a period of a few weeks. It’s said that the pain is intense and can incapacitate a person for weeks at a time. The pain can also continue for months after the infection. The parasite needs to infect a person at least once a year in order to continue. There were an estimated 3.5 million cases in 1986 but the disease has been greatly reduced over time and only 22 cases were reported in 2015. This disease will probably be the first parasitic disease to be completely eradicated in humans.
The inevitable, but unpredictable, appearance of new infectious diseases has been recognized for millennia, well before the discovery of causative infectious agents. The ease of world travel and increased global independence has added layers of complexity to containing these infectious diseases that affect not only the health but the economic stability of societies (Morens et al., 2013).
The human population has a high susceptibility to the contraction of new diseases and outbreaks of these diseases are of high risk. Diseases in recent times that have broken out into the human population are the H7N9 flu strain and SARS. Despite the risk, outbreaks like H7N9 and SARS have been controlled due to epidemiology and other disease control methods. Outbreaks of disease are not uncommon to the human population as they move to new areas around the world with foreign diseases that the native residents would have developed a resistance to.
The argument of whether or not humans evolved from monkeys is constantly tossed around in our society with the emergence of more and more scientific discoveries. Evolution across such a broad spectrum is known as macroevolution, or changes that happen at or above the species level. Both popular and academic discourses debate the religious and moral issues associated with macroevolution and its propositions. The main person behind the idea of evolution was Charles Darwin who theorized that everything comes from a common ancestor. In the magazine article “Was Darwin Wrong?” featured in a 2004 issue of National Geographic, David Quammen discusses whether or not Darwin’s findings in evolution theory were correct. This article was targeted for
Viruses have emerged as causes of foodborne disease, according to data compiled by the Centers for Disease Control and Prevention. Viruses cause a wide range of diseases in plants, animals and humans. These infections do not occur at random: each group of viruses has its own typical host range and cell preference. Viruses were probably always a cause of food borne disease; however with recent developments in detection we are now able to confirm the presence of viruses. Previously, those outbreaks may have been recorded as having an unknown causative agent.
This also requires the person to be socially and economically productive in order to be seen as healthy. According to Mildred Blaxter (1990), there are different ways of defining health. Furthermore, disease can be seen as the presence of an abnormality in part of the body or where there is a harmful physical change in the body such as broken bones. So, illness is the physical state of disease, that is to say, the symptoms that a person feels because of the disease. However, there is some limitation of these definitions which is not merely an absence of disease but a state of physical, mental, spiritual and social wellbeing.
In the 1960s, doctors in the United States predicted that infectious diseases were in decline. US surgeon Dr. William H. Stewart told the nation that it had already seen most of the frontiers in the field of contagious disease. Epidemiology seemed destined to become a scientific backwater (Karlen 1995, 3). Although people thought that this particular field was gradually dying, it wasn’t. A lot more of it was destined to come. By the late 1980s, it became clear that people’s initial belief of infectious diseases declining needed to be qualified, as a host of new diseases emerged to infect human beings (Smallman & Brown, 2011).With the current trends, the epidemics and pandemics we have faced have created a very chaotic and unreliable future for mankind. As of today, it has really been difficult to prevent global epidemics and pandemics. Although the cases may be different from one state to another, the challenges we all face are all interconnected in this globalized world.
The small revision and modifications represent the microevolutionary changes and can lead to new species over time. The immense vast and varied diversity of life on Earth, from birds to butterflies, from apes to humans these baffled and bewildered Darwin. Each organism and species alluringly and appealingly acclimatized and habituated to the environment around the them. Prior to Darwin, humans, were not looked upon as a part if the World. Though, humans resembled primates, like chimpanzee and orangutan and had a lot of similarities with the primates, only few of the Naturalists, grouped humans as