• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month
Page
  1. 1
    1
  2. 2
    2
  3. 3
    3
  4. 4
    4
  5. 5
    5
  6. 6
    6
  7. 7
    7
  8. 8
    8
  9. 9
    9

Obesity - Who's to blame No.2

Extracts from this document...

Introduction

Biology Case Study-Who is to blame for obesity?? Introduction As the increase of illnesses and diseases such as diabetes, heart disease, strokes, even depression and many more continue there appears to be one common factor amongst many of the sufferers-obesity. But who is to blame for this problem? Is there any one source we can pin the responsibility to, or is it a mixture of many? In January 2008 nearly a quarter of adults in the UK were obese, as were 24% of children between the ages of 2 and 15. What is Obesity? A definition of obesity from http://www.nhsdirect.nhs.uk/articles/article.aspx?articleId=265&sectionId=1 describes obesity as being a condition where "a person is carrying too much body fat for their height and sex." This happens when a person eats more calories than they are burning off over a period of time. At this weight it has increased so much it is the point of endangering their health. Healthcare professionals all over the world use BMI checks to discover whether a person is of a healthy weight, underweight, overweight or obese. Body Mass Index (BMI) is calculated by dividing weight (in kilograms) by height (in metres squared.) I have included a recommended BMI chart from the cancer research website http://info.cancerresearchuk.org/healthyliving/obesityandweight/bodymassindex/ * under 18.5 is underweight * 18.5-25 is healthy weight * 25-30 is overweight * 30-35 is obese * Over 35 is morbidly obese. Obesity: Caused by Parents? Lightspeed Research performed a global survey in June 2006 which revealed that nearly 3 out of every 4 respondent blamed parents for the rise of obesity in children. ...read more.

Middle

Sarah Leibowirz, a neurobiologist at Rockefeller University, New York also agrees with this theory, that the exposure to fatty foods might change the hormonal system to crave more fat. She also has performed studies on rats, and these have also shown that whilst the rats were fed on a high fat diet, they became more resistant to leptin-the hormone that stops eating. This suggests that early exposure to these fatty foods can "reconfigure" children's bodies so they always chose fatty foods, or predispose them to always needing fatty products. However, as Dr. Hannah Theobald, a nutrition scientist from the British Nutrition Foundation states "It's hard to translate the findings...as they've been carried out on rats in the laboratory." This suggests that it is hard to create any firm conclusions from this evidence, as there are many other factors to consider, and there is a vast difference in the behaviour of humans and rats. Obesity: Caused by Technology? Technological advances could be another cause of the epidemic. People are becoming lazy, as there is no need to walk anywhere as many households in the UK own their own car, with many families owning more than two. And it is not just the advances in vehicle technology that can be to blame. Computer games and television means that people spend less time doing sporting activities and going out, as they, especially children, prefer to be at home on their numerous games consoles. ...read more.

Conclusion

Binge eating causes a surge of blood glucose, which stimulates the pancreas into producing insulin - a hormone naturally produced by the body to regulate the amount of glucose in the blood. This means that after the initial high, blood sugar levels actually fall rapidly, which sends a false message to the brain that we need more food in order to top up glucose levels. Cravings for sugary foods that will provide a quick glucose fix continue, and binge eaters may therefore consume large quantities of food even when not hungry. Obesity: Caused by schools? There are many reasons as to why schools could be blamed for obesity, both direct and indirect. Reasons such as; school dinners, packed lunches, the school journey or just a lack of physical exercise during the school day. One study found that less than half the children asked walked to school or did exercise at break or lunch, with girls having the least inactivity. Parents tend to overindulge their children whilst packing a school lunch, wanting their children full so they can concentrate their best. However, many lunchboxes lack the healthy elements, fruit and salad and yogurts being replaced by crisps and chocolate bars. Even the substantial foods such as sandwiches are being left out. On the other hand, the school dinners have rapidly improved in quality, with the government having a lot of control over what foods are served. People such as Jamie Oliver have also made a large difference recently in the health quality of school food provided, impacting not only the food served, but the quality of it, especially meats, and also ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE Humans as Organisms section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related GCSE Humans as Organisms essays

  1. Peer reviewed

    Abortion case study

    3 star(s)

    The time in which a foetus can live outside of the womb usually begins from 28weeks. However, this time may become earlier up to about 24 weeks. However, this law has its own limitations due to scientific achievements. Advancements in science make this time in which a foetus can live

  2. Human biology short notes

    permeable to water * More water is reabsorbed in to blood * Urine more concentrated/ Lower volume of urine produced Thyroxine Site of Production-The Thyroid Gland * Stimulated by the secretion of Thyroid Stimulating Hormone (TSH) by the pituitary gland Cause of Production- Low metabolism rate Effect-Increase metabolism rate *

  1. Diabetes Type 1 and 2

    Pig and cow insulin worked very well and they still do, for the vast majority of patients using it, but some people could have developed an allergy or other types of reactions to the protein which is not native to humans.

  2. Should people with diabetes 2 receive medical treatment?

    Vitamin B12 (Cyanocobalamin) 2 �g Builds genetic material of cells and produces blood cells. Vitamin C (Ascorbic Acid) 100 - 200 mg An antioxidant, fights and resists infection; heals wounds; promotes growth and maintenance of bones, teeth, gums, ligaments and blood vessels.

  1. Panic Disorder

    During the attack a person can experience excessive sweating, chills, chocking, shortness of breath, hot flashes, nausea and pains in their chest. Dizziness, shaking and pounding of the heart are also physical features of this disorder. During Sarah's attacks, she experienced many of these physical symptoms.

  2. Research - should salt be banned from processed foods?

    such as alpine areas far away from the ocean, whereas in southern European areas, which border on the oceans, goitre is rarely to be found. This is why iodised salt functions as an important factor in helping to prevent disease caused by a lack of iodine.

  1. HSC Module-Blueprint of Life

    has been analysed across a range of organisms, and similarities provides evidence for evolution in general * Explain how Darwin/Wallace's theory of evolution by natural selection and isolation accounts for divergent and convergent evolution: - Natural Selection: * There are variations within every population of species * Organisms that don't

  2. Are computer games good or bad for you?

    To prove this on page 3 is a graph, this graph illustrates the errors made on a reaction test board by 500 people; in last place with 5224 errors made was the people who had never played computer games before, this is because there brains hadn?t been trained an adapted

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work