• 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)

    Many patients have increased their own risk of heart disease either through smoking, incorrect diet or lack of exercise although this is not true to all. Many patients are asked to cut down and if possible quit smoking before treatment as it is proven that this increases the chance of survival by 16%(in by-pass surgery (source 10).

  2. Marked by a teacher

    The Advantages and Disadvatages of Designer Babies

    3 star(s)

    Because of that it could possibly cause inequality in gender balance if that happened a lot. Baring in my mind if the procedure does go wrong parents could get rather frustrated that their presumably hard earned money goes to waste what would happen to the child?

  1. Factors Affecting the Development of Coronary Heart Disease.

    This study shows that smoking greatly contributes to the development of coronary heart disease and a smoker is much more likely to die from the disease than a non-smoker is. Coronary heart disease is the single greatest cause of death in the western world.

  2. The Biological and Psychological Impact of Smoking Cigarettes

    Nicotine raises levels of a neurotransmitter called dopamine in parts of the brain that produce feelings of pleasure and reward (8). Dopamine is the same neurotransmitter that is involved in addiction to other drugs such as cocaine and heroin. Researches believe that dopamine is one of the key roles in

  1. Is Smoking The Main Cause Of Heart Disease?

    and aging. If one or more valves become insufficient (leaky), blood leaks backwards, this means that less blood is pumped in the proper direction. Copied by myself http://www.stanfordhospital.com/healthlib/greystone/heartcenter/heartprocedures/heartvalverepairreplacementsurgery Ways of reducing and aiding an abnormal heart rhythm... Cardiac arrhythmia is any of a group of conditions in which the electrical

  2. HSC Module-Blueprint of Life

    These individuals with the new allele will be at a selective advantage, and be better suited to their environment - A mutation in a body cell is called a somatic mutation. This mutation cannot be passed on to offspring. - If the mutation occurs in the sex organs, then the

  1. Prevention & Treatments of Coronary Heart Disease

    Another major factor of CHD is associated diseases. If we are able to conquer these other associated diseases such as hypertension, then we can prevent CHD in many cases. By reducing things like hypertension by keeping blood pressures normal by having moderate amounts of salt in one's diet, and by

  2. "Coronary Heart Disease is self inflicted"

    To prove the idea that coronary heart disease can be self inflicted by obesity is if you follow a healthy diet. It improves the ratio of high density lipoproteins to low density lipoproteins cholesterol (3). From doing this cholesterol levels can reduce by 5 to 10%; on average by reducing

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