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Psychological aspects of anorexia nervosa
Psychological aspects of anorexia nervosa
Psychological aspects of anorexia nervosa
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Anorexia Nervosa (AN) was the first eating disorder to be classified, with some specific diagnostic criteria developed in the 1970s (Fairburn & Brownell, 2002). AN is a serious psychiatric disorder in terms of aetiology and epidemiology. 0.48% of prevalence of AN is estimated in girls who fall under the 15-19 age group (Lock et al., 2012). In AN, pathological thoughts and behaviours concerning food and weight, as well as emotions about appearance, eating and food co-occur (Lock et al., 2012). These thoughts, feelings and behaviours lead to changes in body composition and functions that are the direct results of starvation (Lock et al., 2012). The illness in adolescents causes severe affects physically and emotionally, and affects the social development of the individual. The causes of AN are not known but most of the researchers and clinicians agree that AN has multiple determinants (Garner et al., 1982) that emerge in a developmental sequence. Many physiological symptoms, common to semi-starvation irrespective of causes such as depressed mood, irritability, social withdrawal, loss of sexual libido, preoccupation with food, obsessional ruminations and rituals, as well as reduced alertness and concentration are also associated with Anorexia nervosa (Fairburn & Brownell, 2002). The illness is also associated with premorbid perfectionism, introversion, poor peer relations, and low self-esteem (Fairburn & Brownell, 2002). Patients suffering from AN, are also known to suffer from other physical consequences of starvation and other weight losing behaviours. The body’s response to starvation includes bone marrow suppression with increased susceptibility to overwhelming infection, which in the longer term may lead to health consequences s... ... middle of paper ... ...l electrophoresis (SCGE) also known as comet assay has become one of the standard methods for assessing DNA damage, with applications ranging from testing genotoxicity, human bio-monitoring and molecular epidemiology to its use in fundamental research in DNA damage and repair (Collins, 2004). The comet assay is a simple method for detecting DNA strand breaks within cells in eukaryotes. The procedure of comet assay includes Embedding the cells in agarose in a microscope slide, followed by lysing of cells with detergent and high salts to form nucleotides containing supercoiled loops of DNA linked to the nuclear matrix, and then undergoing Electrophoresis at high pH, which results in formation of structures resembling as comets, observed by fluorescence microscopy. The intensity of the comet tail relative to the head reflects the number of DNA breaks (Collins, 2004).
The gels were run at 90-100 volts for 1-1.5 hours. Upon completion of the experiment, we were able to examine the DNA. First, the electrophorese. revealed that three of the fourteen samples were homozygous while the other eleven were
The given DNA ladder sample and each individual ligation samples were run on 40ml of 0.8% agarose in 1x TAE buffer for approximately sixty minutes at 110V. The appropriate volume of 6x GelRed track dye was used after it was diluted to a final concentration of 1x and incubated for thirty minutes. Finally, the gel was illuminated under UV light and analyzed.
Anorexia Nervosa may be described directly as an eating disease classified by a deficit in weight, not being able to maintain weight appropriate for one’s height. Anorexia means loss of appetite while Anorexia Nervosa means a lack of appetite from nervous causes. Before the 1970s, most people never heard of Anorexia Nervosa. It was identified and named in the 1870s, before then people lived with this mental illness, not knowing what it was, or that they were even sick. It is a mental disorder, which distorts an individual’s perception of how they look. Looking in the mirror, they may see someone overweight
Each year millions of people in the United States develop serious and often fatal eating disorders. More than ninety percent of those are adolescent and young women. The consequences of eating disorders are often severe--one in ten end in death from either starvation, cardiac arrest, or suicide. Due to the recent awareness of this topic, much time and money has been attributed to eating disorders. Many measures have been taken to discover leading causes and eventual treatment for those suffering from anorexia. (http://www.kidsource.com/kidsource ...er.html#Causes of Eating Disorders) )
Out of all mental illnesses found throughout the world, eating disorders have the highest mortality rate. Anorexia nervosa is one of the more common eating disorders found in society, along with bulimia nervosa. Despite having many definitions, anorexia nervosa is simply defined as the refusal to maintain a normal body weight (Michel, 2003). Anorexia nervosa is derived from two Latin words meaning “nervous inability to eat” (Frey, 2002). Although anorexics, those suffering from anorexia, have this “nervous inability to eat,” it does not mean that they do not have an appetite—anorexics literally starve themselves. They feel that they cannot trust or believe their perceptions of hunger and satiation (Abraham, 2008). Anorexics lose at least 15 percent of normal weight for height (Michel, 2003). This amount of weight loss is significant enough to cause malnutrition with impairment of normal bodily functions and rational thinking (Lucas, 2004). Anorexics have an unrealistic view of their bodies—they believe that they are overweight, even if the mirror and friends or family say otherwise. They often weigh themselves because they possess an irrational fear of gaining weight or becoming obese (Abraham, 2008). Many anorexics derive their own self-esteem and self-worth from body weight, size, and shape (“Body Image and Disordered Eating,” 2000). Obsession with becoming increasingly thinner and limiting food intake compromises the health of individuals suffering from anorexia. No matter the amount of weight they lose or how much their health is in jeopardy, anorexics will never be satisfied with their body and will continue to lose more weight.
Sanger’s method involved “chain-terminating” or “poison” molecules which took part in recognizing each base’s position on the chain. This process used gel electrophoresis to reveal the sequence of the bases. Gel electrophoresis is used to separate and analyze DNA, RNA, proteins, and the separate fragments of each based on the size and charge of the fragments (dhdhhsss). Gilbert’s method consisted of multiplying, dividing, and fragmenting DNA. Fragments of DNA would be multiplied and chemical reagents would break the DNA into smaller fragments with different lengths. The gel electrophoresis would separate the fragments according their lengths (sizes) and from there the base positions could be identified. Overall Gilbert used techniques to determine the sequence of the operon of a bacterial genome and Sanger used the technique to determine the sequence of all 5,375 nucleotides of the bacteriophage phi-X174, the first complete determination of the genome of an organism
...spite benefits of the technique , that protocol cannot be used for other purposes such as PCR , because of presence of high amount of DMSO (7).DNA ladder assay is an easily available method and seems to be very useful for quick screening of apoptotic changes in cell populations. This method allows working with cell lysates and does not require any special laboratory equipment(10).The present study results showed that this DNA ladder assay used here, is a useful method for evaluating DNA damage and fragmentation caused by apoptotic agents , drugs , food additives and etc.
Anorexia Nervosa (AN) is an eating disorder with the highest mortality rate of any other mental disorder. The National Association of Anorexia Nervosa and Associated Disorders characterizes the disorder as “a relentless pursuit of thinness and unwillingness to maintain a normal or healthy body weight”. (2014) Individuals also experience a “distortion of body image, intense fear of gaining weight and extremely disturbed eating behavior.” (National Association of Anorexia Nervosa and Related Disorders, 2014) As a result, they experience complications physically, mentally and socially. About 80% of individuals with eating disorders suffer from cardiac complications with death due to arrhythmias being the most common cause. This paper will focus on the connection between AN and cardiovascular rhythm disturbances. Individuals with this disorder have an increased chance of sudden death due to cardiovascular abnormalities like bradycardia, myocardial modification including atrophy and refeeding syndrome. (Casiero & Frishman, 2006)
Anorexia is a mental illness that can be identified by its victims starving themselves in order to drop weight to dangerous levels. Most often, anorexics will restrict their food or exercise excessively in order to decrease their body weight. Anorexia has the highest mortality rate of any mental illness. This is mainly due to suicide and the complications that occur consequently from starvation. These complications include heart and kidney failure as well as osteoporosis and muscle atrophy. Females may also stop menstruating. The gastrointestinal, cardiovascular, and endocrine systems may also be affected. Thus, Anorexia has detrimental effects on a person’s physical and mental health.
Anorexia nervosa is a life threatening eating disorder defined by a refusal to maintain fifteen percent of a normal body weight through self-starvation (NAMI 1). Ninety-five percent of anorexics are women between the ages of twelve and eighteen, however, “…in the past twenty years, this disorder has become a growing threat to high school and college students”(Maloney and Kranz 60). Anorexia produces a multitude of symptoms, and if not treated, anorexia can lead to permanent physical damage or death.
In 1978, Brunch called anorexia nervosa a 'new disease' and noted that the condition seemed to overtake ?the daughters of the well-to-do, educated and successful families.? Today it is acknowledged and accepted that anorexia affects more than just one gender or socio-economic class; however, much of the current research is focused on the female gender. ?Anorexia nervosa is characterized by extreme dieting, intense fear of gaining weight, and obsessive exercising. The weight loss eventually produces a variety of physical symptoms associated with starvation: sleep disturbance, cessation of menstruation, insensitivity to pain, loss of hair on the head, low blood pressure, a variety of cardiovascular problems and reduced body temperature. Between 10% and 15% of anorexics literally starve themselves to death; others die because of some type of cardiovascular dysfunction (Bee and Boyd, 2001).?
Anorexia nervosa and Bulimia nervosa are described as psychological eating disorders (Keel and Levitt, 1). They are both characterized by an over-evaluation of weight. Despite being primarily an eating disorder, the manifestations of bulimia and anorexia are different. They both present a very conspicuous example of dangerous psychological disorders, as according to the South Carolina Department of Health, “Eating disorders have the highest mortality rate of any mental illness” (Eating Order Statistics, 1). While Bulimia and anorexia are both psychological disorders primarily prevalent in women, anorexia tends to have different diagnostic complexities, symptoms and physiological effects as compared to bulimia.
Of the three eating disorders, anorexia gets the most attention and has the highest mortality rate of six percent out of any mental illness. According to the International Journal of Eating Disorders, half of the deaths caused by anorexia are suicide. Anorexia is when an individual feels that his or her body is distorted. Anorexia is also when an individual starves himself or herself because of the fear of being overweight (Elkins 44). If an individual suffers from anorexia they will loose anywhere from fifteen to sixty percent of their body weight by starving his or herself. Some of the symptoms of anorexia are heart problems, anemia, and fertility problems (“Eating Disorders”). Another horrible eating disorder is bulimia, which is when a person over eats, feels guilty, and then purges, take...
Gel electrophoresis is used in a variety of settings, particularly in molecular biology. Besides being used to separate nucleic acids, such as DNA and RNA, gel electrophoresis is also employed to divide proteins (Gel Electrophoresis). According to research, electrophoresis is applied for the following reasons, "To get a DNA fingerprint for forensic pur...
Most of us have heard about people who starve theirself because they are convinced that they