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

Heart disease- it's your fault?

Extracts from this document...

Introduction

Heart disease- it's your fault? Heart Disease is not a single disease, but a range of disorders of the heart. Heart diseases kill more people in developed nations than any other disease. They can arise from congenital defects, infection, narrowing of the coronary arteries, high blood pressure (hypertension), or disturbances of heart rhythm. The most common cause of coronary heart disease is a narrowing of the coronary arteries that feed the heart. Like all other muscles, the heart needs a constant supply of oxygen and nutrients, which are carried to it in the blood in the coronary arteries. When these arteries become narrowed or clogged by cholesterol and fat deposits (atheroclerosis) and can no longer supply sufficient blood to the heart, the result is coronary heart disease (CHD). Other things, apart from fat and cholesterol, can cause this, narrowing of the arteries. Damage to the heart or valves due to a congenital defect, inflammation and damage associated with various viral, bacterial, fugal, rickettsial or parasitic diseases, Rheumatic fever or syphilis, and genetic or autoimmune disorders in which cellular proteins in the heart muscles are deranged or which disrupt enzymes affecting cardiac function are also to blame in some cases. ...read more.

Middle

There are also some protective factors, which can be supplemented into the diet such as cod liver oil and iodine. These ideas are based on the fact that countries with these foods as a main part of the diet have fewer CHD mortalities. Excess weight tends to increase your LDL cholesterol levels, so if you are overweight and have high cholesterol levels, then losing weight will reduce these levels and lower your chances of developing heart disease. Weight loss also helps to lower triglycerides and raise HDL (good) cholesterol. On the other hand, crash dieting should also be avoided as this can also be linked to heart disease by loss of protective nutrients in the diet and added stress. People who are overweight also tend to eat food which contains lots of calories but very little nourishment, this may mean that they have a biochemical imbalance which increases the tendency to form blood clots, which play a major part in heart attacks. Physical activity and exercise are definitely beneficial in the fight against heart disease; this has been proven in dose- response trials. It helps because when we exercise, our heart beats more rapidly, the arteries widen to provide more oxygen to the muscles and arterial blood flow improves. ...read more.

Conclusion

After the age of about 50, women often have higher total cholesterol levels than men of the same age. As you get older, the arteries thicken naturally anyway; this is to prevent wear and rupture of the blood vessels. High cholesterol levels can now be treated with cholesterol lowering drugs such as statins, bile Acid sequestrants, nicotinic acid, and fibrates So are our modern lifestyles to blame for an explosion in CHD mortality? It appears that an outstanding number of heart disease cases are caused by factors that we can easily control; meaning that many deaths are self induced and could have been prevented. There are however, many other causes and so when considering the question "is heart disease your fault" there is no real answer. Nobody knows the extent of the risks they are at and so each CHD case is individual and contributed to by many factors. The above information, pictures, quotes and facts were all obtained from a mixture of the following resources: * Microsoft Encarta 2002 * Introduction to advanced biology - C J Clegg * Prima magazine march 2003 - Mind body and soul, who had the heart attack? * The cholesterol myths - Uffe Ravnskov, MD, PhD * Stop That Heart Attack! - Dr Derrick Cutting * http://nhlbisupport.com/chd1/meds.html ...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. Marked by a teacher

    The Advantages And Disadvantages Of Treatments Of Heart Disease.

    3 star(s)

    a right to the NHS, no matter how foolish they have been in their own behaviour," (source 10) It is also fair to comment that smokers do pay a great deal of tax which goes to the governments funds to pay for such care; however those with a poor health due to life style do not.

  2. Marked by a teacher

    The Advantages and Disadvatages of Designer Babies

    3 star(s)

    Is anybody considering what would possibly happen to that embryo? Even if the procedure was to go right, what if the parents decided they were not mentally stable to be parents or perhaps they do not like the way they newborn child looks?

  1. Factors Affecting the Development of Coronary Heart Disease.

    Cheaper foods often contain high levels of fat; cheat meat is often less lean and healthier alternatives prove too costly for families who have limited finances. Exercise that burns off excess fat proves too expensive, as swimming, tennis membership to the gym all costs money.

  2. The Biological and Psychological Impact of Smoking Cigarettes

    So the addiction to nicotine occurs because the brain compensates for the many changes nicotine induces by making other changes. Adjustments are made to the number and sensitivities of many kinds of receptors within the brain, restoring an appropriate balance of activity.

  1. Is Smoking The Main Cause Of Heart Disease?

    * Changes in your heart muscle. * Injury from a heart attack. * Healing process after heart surgery. Irregular heart rhythms can also occur in "normal, healthy" hearts. Some arrhythmias are life-threatening medical emergencies that can cause cardiac arrest and sudden death.

  2. HSC Module-Blueprint of Life

    variation to be present within an organism - Our knowledge of genetics tells us where this variation comes from: * The random segregation of chromosome pairs during meiosis * Crossing over of genetic material during meiosis * Random fertilisation of sex cells * Random mutation of the genetic material -

  1. Coronary heart disease (CHD)

    Diabetes causes blockage and hardening (atherosclerosis) of blood vessels everywhere in the body, including coronary arteries9. Controlling diabetes significantly reduces coronary risk9. There are two forms of diabetes (type 1 and type 2), both of which ultimately lead to high blood sugar levels, a condition called hyperglycaemia.

  2. Obesity - Who's to blame No.2

    She blames the perception of parents for the rise. One extreme case she dealt with saw a child aged two and a half years who weighed more than four stone. She states the parents believed the daughter "she was big-boned and they were too. I think the perception of parents is a very real problem.

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