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Cardiovascular Risk Factors


What is a cardiovascular risk factor?

It is quite simply a personal characteristic that makes you more likely to suffer a cardiovascular accident some day.

Risk factors have been identified by epidemiological studies; these studies looked into the lifestyles (smoking, sport, diet) and the state of health (weight, blood pressure, cholesterol) of very many people based on a questionnaire and medical examinations. They were then followed up for several years to see what happened to each of them. This has resulted in the availability of detailed information about the history in terms of state of health and lifestyles of people who have suffered a cardiovascular accident compared with those who have not. Comparisons can also be made between what happened to people who smoked compared with those who did not, between the overweight and the slim, etc.

These factors can then be taken into account at an early stage and modified as much as possible to avoid accidents; this is known as cardiovascular prevention.
Non-modifiable risk factors

There are some factors which you can do nothing about:
- Your age: The older you get, the more you are at risk. Women are much more at risk once they have reached the menopause.
- Your family history: if your parents, grandparents, or brothers and sisters suffered a cardiovascular accident at a relatively young age (before 55 for men and before 65 for women), the risk of your suffering one is higher.

Modifiable risk factors

The correction of modifiable risk factors significantly reduces the frequency of cardiovascular accidents. Two of these risk factors can be diminished by you alone, or almost:

- Smoking: smoking considerably increases your risk (not only of a cardiac accident, but also of lung cancer, cancer of the mouth or larynx, cervical cancer, or cancer of the bladder).

- A sedentary lifestyle: people who regularly practice a physical activity, even only moderately, such as taking a brisk walk at least once a week, have a longer life expectancy than those who are 'sedentary'.

For the other modifiable risk factors, you will need the help of your doctor:
- Hypertension
- Diabetes
- Obesity
- Increased cholesterol: Epidemiological studies have clearly shown the harmful effects of cholesterol. The risk of cardiac accidents increases with the increase in the blood cholesterol level when it exceeds 1.8 to 2 g per litre. In a mature man, if the cholesterol level exceeds 10% of the normal value, the risk of a cardiac accident increases by 30%. It is sometimes necessary to perform a comprehensive lipids profile and not just measure the total cholesterol level. The interpretation of this profile is a complex exercise. The lipids profile is composed of the levels of four kinds of fats present in the blood: LDL-cholesterol ("bad" cholesterol), HDL-cholesterol ("good" cholesterol), total cholesterol, and triglycerides. When these figures are abnormal, it is the doctor who must adapt the person¿s diet and treatment, often with the help of a dietician.

Dr Elkik
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