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Hyperlipidaemia is often a normal response to injury, not a cause of heart disease. Focusing on hyperlipidaemia alone risks inappropriate treatment for conditions like atherosclerosis.
Area of Science:
- Cardiovascular Science
- Metabolic Disorders
- Pathophysiology
Background:
- Hyperlipidaemia is widely considered a primary cause of coronary artery atherosclerosis and myocardial infarction.
- However, this perspective may overlook its role as a physiological response to underlying pathological processes.
Purpose of the Study:
- To challenge the conventional view of hyperlipidaemia as a direct cause of arterial disease.
- To propose a hypothesis where hyperlipidaemia is a normal homeostatic response and a risk indicator, not a causative agent.
Main Methods:
- Review and synthesis of existing literature on hyperlipidaemia, atherosclerosis, and myocardial infarction.
- Development of a new hypothesis integrating vessel wall injury, stress, and lipid metabolism.
Main Results:
- The study suggests that for most individuals, hyperlipidaemia is a normal physiological response to other diseases, particularly those involving vessel wall injury.
- Abnormal vessel wall movement, potentially stress-induced, may trigger this response.
- Hyperlipidaemia is proposed as a risk indicator rather than a direct cause of arterial disease.
Conclusions:
- Hyperlipidaemia should not be viewed as a direct cause of myocardial infarction, as this can lead to ineffective treatments.
- Treatments aimed at lowering cholesterol and low-density lipoproteins (LDL) without addressing the root cause are compared to treating pneumonia symptoms without addressing the infection.
Abstract:
Hyperlipidaemia has become generally accepted as a cause of coronary artery atherosclerosis, arterial occlusion and subsequent myocardial infarction. This may be true in a few people with lipid intolerance, but for the majority, hyperlipidaemia represents a normal physiological response to another pathological process. One such disease process involves the vessel wall, which appears to suffer injury. The cause of the injury may be associated with abnormal movement in the wall and this in turn can be provoked by stress. A hypothesis encompassing these observations is proposed. It would therefore appear that hyperlipidaemia is not a cause of arterial disease, but as part of normal homeostasis, it can be a risk indicator. It is dangerous to consider hyperlipidaemia as a cause of myocardial infarction as this leads to inappropriate treatment. The lowering of cholesterol and low density lipoproteins (LDL) by any means other than sensible dieting may be likened to attempts to lower elevated white blood cell counts in cases of bacterial pneumonia, without treating the pneumonia.