Definition
Dyslipidemia is a group of diseases characterized by abnormal levels of fat (lipid) or lipoprotein in the blood. An imbalance exists in the levels of several fats, including cholesterol, LDL (low-density lipoprotein), triglyceride fats, and HDL (high-density lipoprotein). Dyslipidemia is characterized by elevated levels of total cholesterol, triglycerides, and LDL, along with reduced levels of HDL, or beneficial cholesterol.
The body requires fats, such as triglycerides and cholesterol, for the synthesis of bile acids for digestion, the generation of steroids, and as a source of energy. Cholesterol is a lipid essential for the proper functioning of cells in the body. Dyslipidemia can occur when there is an imbalance in the levels of fat.
Symptoms of dyslipidemia typically do not manifest until blood fat concentrations have significantly surpassed the established normal range. A multitude of complications may develop in relation to the cardiovascular system. A cholesterol accumulation, for instance, can result in the formation of fatty plaques, which accumulate in the blood vessels. Long-term accumulation of fatty plaque will result in complications with the blood vessels. Blood flow to the tissues will be compromised, and in severe cases, this condition may progress to a heart attack or stroke.
We have an article on total cholesterol tests that you can read here.
Causes
Cholesterol will persistently be transported via the blood vessels and adhere to proteins. Lipoprotein refers to the combination of fat, protein, and cholesterol. Multiple varieties of lipoprotein carriers exist. Below are several carrier lipoproteins seen in the circulatory system.
- Low-density lipoprotein (LDL)
LDL, also known as low-density lipoprotein, is commonly referred to as "bad cholesterol" due to its role in transporting cholesterol particles into the body. LDL cholesterol, also known as low-density lipoprotein cholesterol, can lead to damage to the blood vessels if it becomes excessively high. LDL causes arterial calcification and stenosis. - High-density lipoprotein (HDL)
HDL is often called good cholesterol. HDL is responsible for the transportation of excess cholesterol back to the liver and the reduction of excess cholesterol.
The blood lipid profile can also determine the concentration of triglycerides. Triglycerides are a form of lipid present in the bloodstream. Elevated levels of blood triglycerides can potentially lead to an increased susceptibility to heart disease or a heart attack.
Various medical problems can lead to elevated levels of cholesterol, including:
- Chronic kidney failure
- Diabetes
- HIV/AIDS
- Hypothyroid
- Lupus
Drugs used to treat particular medical disorders can also raise cholesterol levels, including:
- Acne
- Cancer
- Hypertension
- HIV/AIDS
- Arrhythmia
- Organ transplantation
Risk factor
Lack of physical exercise, obesity, and an unhealthy diet are controllable variables that can contribute to elevated levels of cholesterol and triglycerides in the bloodstream. Uncontrollable factors also contribute to the occurrence of high cholesterol. For instance, a deficiency in HDL can impede the body's ability to eliminate LDL cholesterol from the blood vessels, preventing its destruction and excretion in the liver.
Several factors contribute to an increased susceptibility to cholesterol:
- Poor dietary habits. Consuming soluble fats or trans fats can elevate the risk of having high cholesterol. Saturated fat is present in high amounts in fatty meats and in foods that have a significant fat content. Trans fats are commonly present in processed or packaged snacks
- Excessive weight is associated with an elevated chance of having unhealthy levels of cholesterol. The Body Mass Index (BMI), also known as obesity, is defined as a value greater than 30
- Smoking can also diminish levels of high-density lipoprotein (HDL), also known as good cholesterol, in the body and lead to dyslipidemia
- Sedentary lifestyle. Physical activity has the potential to elevate the levels of beneficial cholesterol in the body
- Aging is a contributing factor to the risk of gaining high levels of cholesterol. Despite the fact that cholesterol affects a lot of young people, the liver's ability to remove cholesterol declines with age
Symptoms
Dyslipidemia typically does not manifest any symptoms. The symptoms typically originate as a result of problems in the blood vessels. The subsequent symptoms may occur:
- Pancreatitis can cause abdominal pain. Pancreatic inflammation arises as a consequence of severe hypertriglyceridemia
- Angina Pectoris, also known as chest discomfort, is indicative of obstructed coronary arteries within the heart
High cholesterol, or dyslipidemia, is characterized by the manifestation of a number of symptoms. Signs of dyslipidemia include the following.
- The eyes may exhibit an accumulation of adipose tissue, and those with a genetic disorder may also develop xanthelasma
- Lesions manifest on the dorsal surface of the body. The medical term for this condition is xanthoma
- Whitening of the cornea is indicative of a genetic cholesterol-related disease
Diagnosis
Diagnosing dyslipidemia is exclusively possible via a blood test that analyzes cholesterol concentrations in the blood. The procedure entails the collection of a blood sample from a blood vessel. Then, this specimen is extracted from a blood vessel. Laboratory analysis will be performed on the sample.
There are widely accessible instruments for measuring cholesterol. Nevertheless, the precision is less effective than that achieved in a controlled laboratory setting. In addition, this tool has the capability to solely quantify total cholesterol. At a clinic or hospital, a cholesterol check can determine the total amount of high-density lipoprotein (HDL) cholesterol in the blood. High-density lipoprotein (HDL), low-density lipoprotein (LDL), and triglycerides.
In addition, the doctor will offer an analysis of the test findings. Prior to the test, you will be instructed to abstain from eating for a period of 9-12 hours. Typically, the examination will be conducted in the morning.
Management
The management of dyslipidemia primarily focuses on reducing cholesterol levels. There are two primary methods, specifically:
- Lifestyle modification
A lifestyle that is modifiable is considered unhealthy. Maintaining a healthy lifestyle, including the consumption of foods that are low in unhealthy lipids,. Additionally, at least 30 minutes of daily physical activity can help reduce dangerous cholesterol levels. - Medication
Changes in lifestyle may not be sufficient to treat dyslipidemia in all individuals. Your physician will prescribe medication for cholesterol control.
Possible medications include:
-
- Statins
- Fibrates
- Ezetemibe
- PCSK-9
- E.P.A
Complications
Hyperlipidemia or elevated cholesterol levels can lead to the deposition of fat and cholesterol on the walls of arteries, a condition known as atherosclerosis. This accumulation of fat will obstruct blood flow, potentially leading to complications. The subsequent complications may arise as a result of dyslipidemia:
- Chest pain. Chest pain can occur when the blood vessels that supply blood to the heart become obstructed
- Heart attack. Plaque rupture will result in cessation of blood flow and subsequent myocardial infarction
- A stroke happens if cerebral blood vessels become obstructed by an accumulation of plaque
- Abdominal pain may manifest due to acute pancreatitis. This is typically the result of triglyceride concentrations exceeding 1000 mg/dL
Prevention
Preventing cholesterol levels requires regulation of controllable variables. You can prevent elevated cholesterol levels by performing the following:
- Increase vegetable consumption and decrease sodium intake
- Consume only a restricted quantity of animals and only those with a healthy lipid content
- Reduce body mass and sustain an optimal weight
- Stop smoking
- Exercise every day for at least 30 minutes
- Limit alcohol consumption; if possible, stop. No more than 2 glasses per day for men, and no more than 1 glass per day for women
- Stress management
When to see a doctor?
You will experience improvement in your dyslipidemia if you stick to your treatment regimen and maintain a healthier lifestyle. Nevertheless, in the event of complications such as cardiovascular disease, lifelong cholesterol medication will be prescribed.
Strict control is necessary for effective management of dyslipidemia, and medical intervention can address it. One can do screening to determine their blood lipid levels, including total cholesterol, LDL, HDL, and TG. If you discover elevated levels of cholesterol, promptly seek medical advice for appropriate treatment. Prioritizing the management of abnormal cholesterol levels is crucial in order to prevent the occurrence of severe health complications.
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- dr Hanifa Rahma
Pappan, N., and Rehman, A. Dyslipidemia (2021). Retrieved April 14, 2023, from https://www.ncbi.nlm.nih.gov/books/NBK560891/#.
Mayo Clinic: High Cholesterol (2023). Retrieved April 14, 2023, from https://www.mayoclinic.org/diseases-conditions/high-blood-cholesterol/symptoms-causes/syc-20350800.
Elsevier: Dyslipidemia in Adults (2022). Retrieved April 14, 2023, from https://elsevier.health/en-US/preview/dyslipidemia-in-adults.