• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Case study- heart disease

Extracts from this document...

Introduction

Case Study: Heart Disease Is there a correlation between passive smoking and coronary heart disease? In this case study I will be analysing evidence for and against claims that passive smoking increases the risk of coronary heart disease. The first piece of evidence of a link between passive smoking and heart disease was first discussed in the mid 80s and research into the evidence is ongoing. Regular intake of second hand smoke increases coronary heart disease risk by approximately 25%. Evidence has shown that even small doses of second hand tobacco smoke can have a large effect on coronary heart disease, whilst further exposure has a small additional effect. Environmental tobacco smoke increases blood platelet activity which causes blood to thicken. The thicker blood then has a greater tendency to clot. These blood clots prevent oxygen from getting to the heart via the coronary arteries, causing the heart muscle to die. Consequently a heat attack occurs. ...read more.

Middle

People who regularly visit pubs or bars where smoking is permitted are inevitably going to breathe in a large amount of tobacco smoke. However, a survey by the anti-smoking charity ASH in 1999 found that over 3 million people were exposed to excessive amounts of tobacco smoke at work. It is also estimated that almost half of British children are exposed to tobacco smoke in there homes. One study carried out by scientists in the UK found that in households where both parents smoke, young children have a 72% increased risk of respiratory illnesses. Although the mainstream smoke that is inhaled by the smoker is more harmful than the sidestream smoke inhaled by bystanders, most cigarettes have filters so the smoke does not effect them as much as the sidestream smoke. Recent studies suggest that passive tobacco smoke causes coronary artery disease far more often than it causes cancer. Richard N. Fogoros, M.D. estimated that, in America, passive smoke causes 3000 deaths a year from lung cancer, whilst passive smoking also causes as many as 40,000 deaths a year from heart disease related deaths. ...read more.

Conclusion

They posted the following question to the Tompkins county health department: ''on your website you claim that 63,000 people die from second hand smoke every year. Could you please name three or four or them?'' After looking at all sides of the argument I came to the conclusion that I think there is a correlation between passive smoking and coronary heart disease. The main point that stands out as being plausible to me is that environmental tobacco smoke increases blood platelet activity causing the blood to thicken and clot. The evidence posed by FOREST is not valid in my opinion because it does not have any scientific backing and all there arguments are based on data and survey numbers instead of science. I think smoking should be banned in public places and work places because it not only affects the smoker but the people around them as well. Passive smoke intake is linked to cancer, heart attacks, coronary artery disease, coronary heart disease, heart failure, arrhythmias, atherosclerosis and respiratory illnesses. Luke Simpson 1 ...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. Case Study of Mrs G who has Coronary Artery Disease (CAD).

    Reduced blood levels of ionic calcium depress the hearts function (Marieb, 2001, pg 708). As Mrs G has CAD, a low calcium level would lower the hearts function resulting in further myocardial ischaemia, therefore taking a blood sample to test her calcium levels was required.

  2. Therapuetic cloning case study

    Due to the increase in organs that therapeutic cloning would bring less people would be waiting for organ transplants and less organ donors would be needed, it would be a win win scenario. Against-argument for Therapeutic cloning The main argument against therapeutic cloning is if it is morally right to use embryos (an unborn child)

  1. The Biological and Psychological Impact of Smoking Cigarettes

    Emphysema causes the surface area of the lung to decrease, this reduce the rate of gaseous exchange because less oxygen is diffusing from the alveoli into the blood and delivered to the heart and other organs and less carbon dioxide is being removed.

  2. In my case study I will explain and supply a lot of information on ...

    uncomfortable to breathe like Bronchitus, emphysema ans the main kille of all LUNG CANCER! 98% of all lung cancer cases are caused by smoking cigarettes and too much tobacco. What the heart does normally- Usually your heart pumps blood around the body.

  1. Factors Affecting the Development of Coronary Heart Disease.

    HDL picks up excess LDL and takes it to the liver to be disposed of so a higher concentration of HDL than LDL is good. Eating too much fat from dairy products, meats and hydrogenated oils causes high LDL levels.

  2. Factors Affecting The Development Of Coronary Heart Disease

    Passive smoking or breathing in other people's smoke, can also reduce the amount of oxygen delivered and the efficiency of use of oxygen in the myocardium14. The graph below shows this data: 15 Another major 'risk factor' is diet. A healthy diet will decrease the risk of CHD while an unhealthy diet will increase the risk.

  1. This document is a case study, analyzing and discussing the topic question: Is it ...

    Another aim of this case study and research it to understand why it cannot be treated like similar infections by a course antibiotics; this is probably how it gained its 'Super Bug' Title that has been splashed across the media most recently.

  2. Biology smoking coursework. Should smoking be banned in public places?

    It also Increase the risk of accelerated hypertension in people with severe hypertension. Apart from nicotine, gases (oxidant gasses and carbon monoxide) inhaled during smoking have a negative impact on people`s health. Carbon monoxide: binds to haemoglobin, reducing the oxygen-carrying capacity of the blood.

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