Wednesday, June 15, 2022
HomeMust ReadWhy Are Ldls Called Bad Cholesterol

Why Are Ldls Called Bad Cholesterol

Natural Remedies And Lowering Cholesterol

What Is LDL Cholesterol And Why It’s Called The BAD Cholesterol – by Dr Sam Robbins

Its very important to talk to your health professional before using any:

  • supplements
  • natural remedies
  • or complementary therapies.

Sometimes they can do more harm than good. They may interact with any medication that youre taking, which can be dangerous. They can also make your medication less effective. Your doctor needs to know everything that you are taking to ensure that the combination is safe.

If youve been prescribed cholesterol-lowering medication, make sure you take it as directed by your doctor. This is one of the most effective ways to keep your cholesterol levels down.

Transport Into The Cell

When a cell requires additional cholesterol , it synthesizes the necessary LDL receptors as well as PCSK9, a proprotein convertase that marks the LDL receptor for degradation. LDL receptors are inserted into the plasma membrane and diffuse freely until they associate with clathrin-coated pits. When LDL receptors bind LDL particles in the bloodstream, the clathrin-coated pits are endocytosed into the cell.

Vesicles containing LDL receptors bound to LDL are delivered to the endosome. In the presence of low pH, such as that found in the endosome, LDL receptors undergo a conformation change, releasing LDL. LDL is then shipped to the lysosome, where cholesterol esters in the LDL are hydrolysed. LDL receptors are typically returned to the plasma membrane, where they repeat this cycle. If LDL receptors bind to PCSK9, however, transport of LDL receptors is redirected to the lysosome, where they are degraded.

Dangers Of High Ldl Cholesterol

When LDL levels are high, a range of conditions can arise, some of which are very dangerous. Most notable of these are:

  • CAD: Leading to chest pains , shortness of breath, heart palpitations, elevated heart rate, dizziness and nausea, sweating, and muscular weakness. This can lead to heart attack, among other severe and potentially fatal complications.
  • Carotid artery disease: The carotid arteries are important arteries on each side of the neck. If atherosclerosis blocks these, stroke can arise.
  • PAD: Partial or complete blockage of arteries outside of the heart, especially in the lower limbs, can lead to swelling, muscular weakness, inflammation, and pain, especially when active.
  • Heart attack: Occlusion of the cardiac arteries leads to muscles in the heart not getting the oxygen they need. This condition, characterized by angina, breathing difficulties, among other symptoms, leads to cell death in this organ and is a medical emergency.
  • Stroke: Another common complication of high LDL and its associated conditions is stroke, an attack due to the rapid death of brain cells. As with other issues, this occurs due to clotting in arteries of the brain.
  • Cardiac arrest: In very rare cases, high LDL, especially if it leads to CAD, can cause your heart to suddenly stop. This is fatal if not treated immediately.

You May Like: Pork Chop Cholesterol

How Can I Lower My Ldl Level

There are two main ways to lower your LDL cholesterol:

  • Therapeutic lifestyle changes . TLC includes three parts:
    • Heart-healthy eating. A heart-healthy eating plan limits the amount of saturated and trans fats that you eat. Examples of eating plans that can lower your cholesterol include the Therapeutic Lifestyle Changes diet and the DASH eating plan.
    • Weight Management. If you are overweight, losing weight can help lower your LDL cholesterol.
    • Physical Activity. Everyone should get regular physical activity .
  • Drug Treatment. If lifestyle changes alone do not lower your cholesterol enough, you may also need to take medicines. There are several types of cholesterol-lowering drugs available, including statins. The medicines work in different ways and can have different side effects. Talk to your health care provider about which one is right for you. While you are taking medicines to lower your cholesterol, you still should continue with the lifestyle changes.

Some people with familial hypercholesterolemia may receive a treatment called lipoprotein apheresis. This treatment uses a filtering machine to remove LDL cholesterol from the blood. Then the machine returns the rest of the blood back to the person.

NIH: National Heart, Lung, and Blood Institute

Why Did My Ldl Go Up

What Is LDL Cholesterol And Why It

Poor diet. Eating saturated fat, found in animal products, and trans fats, found in some commercially baked cookies and crackers and microwave popcorn, can raise your cholesterol level. Foods that are high in cholesterol, such as red meat and full-fat dairy products, will also increase your cholesterol.

You May Like: Tuna Steak Cholesterol

Lack Of Physical Activity

Certainly related to the above, insufficient physical activity can also drive LDL higher. The good news, however, is that even modest increases in the amount of exercise you get can help a great deal. Ideally, doctors may want you getting up to 90 minutes a day of physical activity however, even 30 to 45 minutes regularly can be helpful.

At bare minimum, the surgeon general recommends that adults get 2.5 hours of moderate exercise every week. This can include:

  • Biking
  • Swimming

Normal Cholesterol Levels In Adults

You should get your cholesterol levels checked every 5 years after your age is more than 20 years, according to the American Heart Association.

Your doctor will perform the screening test i.e. lipid profile.

Cholesterol levels consist of LDLs, HDLs, and triglycerides.

LDL is bad cholesterol as it blocks our blood vessels and increases your risk for heart disease.

On the other hand, HDL is good cholesterol as it helps to protect you from heart disease.

Thus, the higher your HDL, the better.

Total cholesterol also includes a triglyceride count and these are other types of fat that can build up in the body in the body.

Moreover, doctors consider them building blocks of cholesterol.

High levels of triglycerides and low levels of HDL raise your risk for heart disease.

This is because as you age, cholesterol tends to climb. Furthermore, men are often at a higher risk than women for higher cholesterol.

However, as a woman experiences menopause, their risk for high cholesterol goes up.

For those with high cholesterol and other heart risks, like diabetes, doctors often recommend frequent testing.

Read Also: Tuna Cholesterol Content

Don’t Miss: Is Chocolate Bad For Cholesterol

Cholesterol Myths And Facts

Cholesterol can be confusing! Learn answers to common questions about blood cholesterol.

What do your cholesterol numbers mean? Can the foods you eat change your cholesterol levels?

Learn the difference between cholesterol myth and fact. Then commit to getting your cholesterol checked this year so you know your numbers and your risk for heart disease and stroke.

Commit to getting your cholesterol checked this year so you know your numbers and your risk for heart disease and stroke.

What Are Recommended Cholesterol Levels By Age

The Cholesterol Myth: Why LDL Cholesterol Isn’t Bad

Lipids are the by-products of common fat we eat. Lipids are classified as triglycerides , diglycerides , and steroids. Cholesterol is a steroid helping in the formation of cell membranes and hormones. Further, this cholesterol is classified as Low-Density Lipoprotein or LDL, and High-Density Lipoprotein or HDL also called good cholesterol. VLDL is another type of cholesterol secreted by the liver into your bloodstream. VLDL stands for Very-Low Density Lipoprotein. Lipoproteins are formed partly by proteins and partly fat. All three types of lipoproteins vary in the proportion that is made of cholesterol, protein, and triglycerides. VLDL has more of triglycerides, LDL more of cholesterol, and HDL more of protein. That is the reason, LDL and VLDL are together known as the bad cholesterol, they both have a significant role in the formation of plaque. Now, plaque is a thick solid sticky mass made of fat, cholesterol, calcium, and other similar substances that get deposited in the arterial lumen interrupting the blood flow.

All in all, both types of bad cholesterol adversely affects your heart health either by getting deposited in the lumen of your arteries or under your skin and in the liver. If the lumen is completely choked, the organ may not get any blood supply. The plaque may burst and move to smaller arteries blocking them completely.

According to the American Heart Association, the following are the age-wise recommended cholesterol levels:

Triglycerides

Don’t Miss: Why Does Shrimp Have High Cholesterol

Cholesterol Levels For Adults

  • Total cholesterol levels less than 200 milligrams per deciliter are considered desirable for adults. A reading between 200 and 239 mg/dL is considered borderline high and a reading of 240 mg/dL and above is considered high.
  • LDL cholesterol levels should be less than 100 mg/dL. Levels of 100 to 129 mg/dL are acceptable for people with no health issues but may be of more concern for those with heart disease or heart disease risk factors. A reading of 130 to 159 mg/dL is borderline high and 160 to 189 mg/dL is high. A reading of 190 mg/dL or higher is considered very high.
  • HDL levels should be kept higher. A reading of less than 40 mg/dL is considered a major risk factor for heart disease. A reading from 41 mg/dL to 59 mg/dL is considered borderline low. The optimal reading for HDL levels is of 60 mg/dL or higher.

How To Lower High Ldl Cholesterol

Your doctor will set up a plan of lifestyle changes and/or medication that can lower your cholesterol levels and your overall odds of a heart problem. Your plan might include:

  • A healthy diet. Try not to eat things that are high in saturated fat, cholesterol, or simple carbs such as sugar and white flour. Eat more fiber and plant sterols such as margarine or nuts.
  • Regular exercise. The kind that gets your heart pumping is best.
  • Weight loss. Losing even 5 to 10 pounds can improve your cholesterol levels.
  • Quitting tobacco. If you have a hard time giving up smoking, your doctor can help you find the program thatâs best for you.
  • Medication. Some drugs, like statins, help keep your body from making cholesterol. Another, ezetimibe , lowers the amount of cholesterol your body gets from food you eat. If you canât take statins or have a severe form of high cholesterol, you might get shots of PCSK9 inhibitors. These meds help your liver remove more LDL from your blood.

Show Sources

You May Like: Oysters High Cholesterol

Lcat As A Therapeutic Target For Dyslipidemia

Overexpression of human LCAT in rabbits and co-overexpression with CETP in mice has shown protection against diet-induced atherogenesis . Conversely, several mutations in apoAI that impair its LCAT activation are strongly correlated with reduced HDL levels . Physiologically, LCAT binds FC and phosphatidylcholine , transferring the acyl chain at the sn-2 position of PC to FC, producing CE and lyso-PC. LCAT, an interfacial enzyme , functions on the surface of HDL particles. Binding to the HDL surface activates the enzyme, but optimal activity is reached only after association with a cofactor. The most potent activator of LCAT is apoAI, and the mechanism of activation is thought to be similar to that of PL by colipase which forms a 1:1 complex with PL . A three-dimensional structure for LCAT is currently unavailable, although a computational model has been proposed . The model suggests that LCAT has an architecture similar to that of the family of / hydrolases . Consistent with this hypothesis, mutational experiments that changed the catalytic residues Ser181 , His377, and Asp345 into Ala resulted in complete loss of, or severe reductions in, enzyme activity.

How Do I Know What My Ldl Level Is

What Is LDL Cholesterol And Why Its Called The BAD Cholesterol

A blood test can measure your cholesterol levels, including LDL. When and how often you should get this test depends on your age, risk factors, and family history. The general recommendations are:

For people who are age 19 or younger::

  • The first test should be between ages 9 to 11
  • Children should have the test again every 5 years
  • Some children may have this test starting at age 2 if there is a family history of high blood cholesterol, heart attack, or stroke

For people who are age 20 or older::

  • Younger adults should have the test every 5 years
  • Men ages 45 to 65 and women ages 55 to 65 should have it every 1 to 2 years

Also Check: Seafood High In Cholesterol

How To Increase Hdl Cholesterol

Although HDL levels are driven by family genetics, you can improve HDL levels in three key ways:

  • If you are a smoker, research clearly shows that quitting smoking can increase HDL.
  • Adopting a heart-healthy diet low in fat and high in fiber can also modestly raise your HDL.
  • Aerobic exercise can also have positive effects on HDL. Have trouble exercising? Find a buddy research shows it helps motivate you. That exercise can be as simple as increasing the amount of walking you do each week.

Lastly, although primarily used to decrease high LDL, some statin medications may potentially increase HDL levels moderately. Any medical treatment option should be discussed with your doctor. Importantly, high HDL does not protect you from the untoward effects of high LDL.

What Does The Term Total Cholesterol Mean

The term total cholesterol refers to the total amount of the different kinds of cholesterol in your blood. One kind of cholesterol is the LDL cholesterol. Another kind is the HDL cholesterol. LDL stands for low-density lipoprotein. LDL is the bad cholesterol. HDL stands for high-density lipoprotein. HDL is the good cholesterol.

Also Check: Is Oyster High In Cholesterol

Myth: I Would Be Able To Feel It If I Had High Cholesterol

Fact: High cholesterol usually has no signs or symptoms. You may not know you have unhealthy cholesterol levels until it is too latewhen you have a heart attack or stroke. Thats why its so important to get your cholesterol levels checked at least every 5 years.1,2 Learn more about getting your cholesterol checked.

Occasionally, some people develop yellowish growths on their skin called xanthomas, which are cholesterol-rich deposits. People with xanthomas may have high cholesterol levels.

What Is A Good Ldl To Hdl Ratio

Why Is High LDL Cholesterol Bad in Diabetics?

In general, the higher your HDL, and the lower LDL, the better off you are. Optimal cholesterol levels are determined by looking at the ratio of HDL cholesterol to total cholesterol. This is calculated by dividing total cholesterol score by your HDL result, so if your total score is 150, and your HDL is at 50, you’d score a 3:1.

Generally speaking, the higher this number, the higher the risk of heart problems. Doctors want to see a ratio below 5:1, with those below 3.5:1 considered ideal. Since lowering LDL causes total cholesterol numbers to drop, it promotes a better cholesterol ratio.

Don’t Miss: Is Tuna Fish High In Cholesterol

Hdl Versus Ldl Cholesterol

There are two main types of cholesterol: high-density lipoprotein and low-density lipoprotein . Lipoproteins are made of fat and proteins. Cholesterol moves through your body while inside lipoproteins.

HDL is known as good cholesterol because it transports cholesterol to your liver to be expelled from your body. HDL helps rid your body of excess cholesterol so its less likely to end up in your arteries.

LDL is called bad cholesterol because it takes cholesterol to your arteries, where it may collect in artery walls. Too much cholesterol in your arteries may lead to a buildup of plaque known as atherosclerosis. This can increase the risk of blood clots in your arteries. If a blood clot breaks away and blocks an artery in your heart or brain, you may have a stroke or heart attack.

Plaque buildup may also reduce blood flow and oxygen to major organs. Oxygen deprivation to your organs or arteries may lead to kidney disease or peripheral arterial disease, in addition to a heart attack or stroke.

Centers for Disease Control , over 31 percent of Americans have high LDL cholesterol. You may not even know it because high cholesterol doesnt cause noticeable symptoms.

The only way to find out if your cholesterol is high is through a blood test that measures cholesterol in milligrams per deciliter of blood . When you get your cholesterol numbers checked, youll receive results for:

To treat high cholesterol, doctors often recommend these lifestyle changes:

Why Is Ldl Called The Bad Cholesterol

LDL is called the bad cholesterol because it can cause a buildup of fat and cholesterol in the walls of your blood vessels. If your LDL has been high for many years, this buildup can clog the arteries to your heart or brain. The arteries may be partly or totally blocked. The medical word for this blockage is atherosclerosis. Clogged arteries to the heart can cause a heart attack. Clogged arteries to the brain can cause a stroke.

Dont Miss: Tuna High In Cholesterol

You May Like: Is Tuna Good For High Cholesterol

Low Cholesterol And Preterm Birth Or A Baby With Low Weight

In a study, published in the October 2007 issue of the journal Pediatrics, nearly 13% of the women with very low cholesterol gave birth prematurely.

The researchers also found that white women were more at risk and that almost 21% of white women with the very low cholesterol levels had preterm deliveries.

On an average, the preterm babies of mothers with low cholesterol weighed five ounces less than babies delivered full term to mothers with moderate cholesterol.

Understand The Difference Between Total Cholesterol And High Density Lipoprotein And Low Density Lipoprotein

What Is Cholesterol?

If you doctor is referring to your total cholesterol and is making decision based on your TC Run, dont walk. Run away and find another doctor. TC is comprised of low density lipoprotein , so-called bad cholesterol even though it isnt bad. High density lipoprotein , so-called good cholesterol, and remnant cholesterol . Initial studies in the 1960s and 70s looked at TC and risk of cardiovascular disease and found a weak association. That was prior to when scientists learned how to measure LDL and HDL.

Studies then looked at the individual lipoproteins and found the higher the LDL, in general, the higher the risk for CVD. And the higher the HDL< the lower the risk of CVD. So, while talking about TC was cutting edge in the 60s and 70s, it is woefully outdated today. That is why if your doctor is still evaluating and treating TCRun!

Recommended Reading: How Do Eggland Eggs Have Less Cholesterol

Also Check: Cholesterol In Shrimps Good Or Bad

RELATED ARTICLES

Most Popular