How Is Cholesterol Produced (The Liver vs Diet 8020 Rule)

Introduction

Whenever cholesterol is mentioned, most people have only one thing in mind: “This is a bad thing, it should be avoided. But the reality is more interesting. Cholesterol is not an enemy, but a basic need of your body. That’s when the problem starts when the quantity is out of balance.

Millions of adults in the United States are concerned about their cholesterol. According to the Centers for Disease Control and Prevention (CDC), about 86 million U.S. adults have total cholesterol above 200 mg / dL. Despite this, many people do not know how cholesterol is finally formed, and the most surprising thing is that a large part of it does not come from your plate.

In this article we will understand in simple and straightforward language why the body makes cholesterol, how it is formed, what role the liver plays in it, what the “80/20 rule” actually is, why cholesterol can increase despite healthy eating, and how cholesterol is released from the body. If you have ever thought that “I eat so healthy, then why is my cholesterol so high? Then this article is for you.

Introduction
What Is Cholesterol?
Why Does the Body Make Cholesterol?
How Is Cholesterol Produced in the Body? (Step by Step)
Liver Cholesterol: The Body’s Main Factory
The 80/20 Rule: Liver vs. Diet
Why Do I Have High Cholesterol When I Eat Healthy?
How Does Cholesterol Leave the Body?
Understanding Your Numbers: LDL, HDL & Triglycerides
How to Manage Cholesterol Naturally
When Should You See a Doctor?
Frequently Asked Questions (FAQs)
Conclusion

What Is Cholesterol?Cholesterol is a waxy, fat-like substance that is found in every cell of your body. It does not dissolve in water, so it is wrapped in special protein packets to travel through the blood. These proteins are called lipoproteins.

There are two main types of lipoproteins:

LDL (low-density lipoprotein) is commonly referred to as “bad cholesterol,” because it can build up in the walls of arteries when it becomes too much.
HDL (high-density lipoprotein) is called “good cholesterol,” because it carries excess cholesterol from the blood to the liver.

Remember, cholesterol itself is not good. Not bad. The only difference is the ride he’s on, and the amount of it.

Why Does the Body Make Cholesterol?

Many people ask this question: “If cholesterol is a risk factor for heart disease, why does the body make it? The answer is simple: without it, life is impossible. Your body uses cholesterol for a number of important functions.

Building cell walls: Cholesterol is present in the outer membrane of every cell. It keeps the membrane strong but flexible, just like in a building where cement and ink combine to give strength.
Preparation of hormones: Important hormones like cortisol, estrogen, progesterone and testosterone are made from cholesterol itself. Without cholesterol, these hormones can’t be produced.
Vitamin D production: When your skin is exposed to sunlight, a type of cholesterol in the skin is converted into vitamin D. This vitamin is essential for bones and the immune system.
Bile: The liver makes bile acids from cholesterol, which help digest the fat in food and absorb the vitamins (A, D, E, K) that are soluble in fat.
Brain and Nerve Health: The brain is only about 2 percent of body weight, but a large portion of the body’s total cholesterol is found there. Cholesterol also works to form a protective layer around nerve fibers.

That is why the body manages to produce this important substance on its own instead of leaving it to the food. It is a safe system of nature. So that you do not have cholesterol deficiency in any condition.

How Is Cholesterol Produced in the Body? (Step by Step)

The process of cholesterol formation is called cholesterol biosynthesis. It is a complex chemical process consisting of 25 steps. Simply put, it is like the assembly line of a factory, where a small amount of raw material gradually forms a finished product.

Step 1: Supply of raw materials. The process begins with acetyl-CoA. It is the substance that is formed by the breakdown of your food, especially carbohydrates, fats and proteins. That is, the raw material for making cholesterol comes from your normal food, whether you have eaten anything with cholesterol or not.
Step 2: Preparation of the mayonnaise. Several molecules of acetyl-CoA combine to form HMG-CoA, and then a special enzyme, called HMG-CoA reductase, converts it into mevalonate. This is the most important and fast-paced phase of the entire process.
Step 3: Build the infrastructure. Mevalonates are made up of five carbon atoms. These units are combined to form larger molecules, such as squalene.
Step 4: Change the shape. Squalene first becomes lanosterol, and then after several small chemical changes, finally, complete cholesterol is formed.
Step 5: The delivery. The cholesterol produced is packaged into lipoproteins and transported through the blood to the cells that need it.

One thing is very important here: HMG-CoA reductase enzyme is the “switch” that controls cholesterol production. Statin drugs reduce the production of cholesterol in the liver by inhibiting this enzyme. That’s why these drugs are so effective.

Key Steps at a Glance

Step	Starting Material	What Happens	Result
1	Acetyl-CoA	Raw material from food metabolism	HMG-CoA
2	HMG-CoA	HMG-CoA reductase enzyme acts (statins block this)	Mevalonate
3	Mevalonate	Building five-carbon units	Squalene
4	Squalene	Multiple conversions	Lanosterol, then Cholesterol
5	Cholesterol	Packaged into lipoproteins	Delivered to cells via blood

Liver Cholesterol: The Body’s Main Factory

Although almost every cell in the body has the ability to make cholesterol, the real big factory is your liver. The liver produces around 1,000 mg of cholesterol per day, while the remaining amount is made in the intestines and other tissues.

The liver not only makes cholesterol, but also manages it as a whole:

Production: The production of new cholesterol according to the need of the body.
Packaging: It is wrapped in particles such as VLDL and later LDL and released into the blood.
Withdrawal: The return of excess LDL from the bloodstream through receptors on its surface.
Elimination: Cholesterol is converted into bile acids and released from the body.

There is also an automatic system inside the liver. This is called feedback control. When you take in more cholesterol than you eat, the liver usually reduces its production somewhat, and when you get less than you eat, it increases production. This system tries to keep the body in balance, but it is not equally effective in every person, and this is what concerns the front parts.

When liver health is poor, for example in the case of fatty liver, the cholesterol and triglycerides system can also be affected. Therefore, taking care of the liver is actually taking care of cholesterol.

The 80/20 Rule: Liver vs. Diet

This is the part that can change your mind. It’s generally said that about 80 percent of the cholesterol in your blood is made by your own body, especially the liver, and only about 20 percent comes from food. This is known as the 80/20 rule.

It’s also important to be honest: 80/20 is not a strict medical law, but a rough estimate. This ratio may be slightly different in each person, as some people absorb more cholesterol from food and some less. But the whole point is that the body’s own share of production is much larger than that of food.

Source	Approximate Share	What It Means
Made by the body (mostly liver)	About 80%	Genetics, hormones, and metabolism strongly influence this
Absorbed from food	About 20%	Found only in animal foods such as eggs, meat, and dairy

Does that mean that food isn’t important? Not at all. Two things need to be understood.

First, the saturated fats and trans fats in foods can force the liver to make more LDL and clear less of it from the blood. That is, apart from giving cholesterol directly, food also affects the work of the liver indirectly. The American Heart Association (AHA) also emphasizes reducing saturated fat in the diet.

Secondly, plant-based foods, such as fruits, vegetables, pulses and cereals, do not contain cholesterol at all. Cholesterol is only found in animal sources, such as eggs, meat, and dairy. However, the fiber and healthy fats in these foods help improve liver function.

Why Do I Have High Cholesterol When I Eat Healthy?

This is probably the most important and most asked question of this entire debate. Many people have given up fried foods for years, eating salads, avoiding grease, yet the lab report comes up with elevated LDL. In such a situation, it is quite natural to be disappointed and feel guilty. But it’s often not due to a lack of effort, but to factors that are off the plate.

1. Genetics

The main cause is often heredity. If your parents or siblings have high cholesterol, it’s likely that your liver’s speed of making or clearing cholesterol is the same. Familial hypercholesterolemia (FH) is a condition in which the liver is unable to remove LDL from the bloodstream. According to experts, this condition is found in about one out of every 250 people, and many people do not know it. LDL is often 190 mg / dL or above, no matter how good the dose.

2. Thyroid

When the thyroid is underactive (hypothyroidism), the body clears less LDL from the blood and cholesterol increases. Similarly, diabetes, chronic kidney disease, fatty liver and PCOS can also affect cholesterol levels. Sometimes the first sign of these diseases is elevated cholesterol.

3. Age, sex, and hormones

With age, the liver’s ability to clear LDL decreases. LDL is usually elevated after menopause when estrogen levels drop, whereas estrogen previously helped keep it under control. Cholesterol can also increase during pregnancy.

4. A number of medicines

Certain medications, such as some dehydrating pills, beta-blockers, steroids and some hormonal drugs, can raise cholesterol or triglycerides. Ask your doctor if you are taking any medications, but don’t stop taking them yourself.

5. Hidden mistakes in eating “healthy”

Sometimes we think that our food is healthy, but there are hidden things in it:

Excessive use of coconut oil, butter and ghee, which are rich in saturated fats
Processed snacks, biscuits and bakery items labeled “Healthy”
Packaged juices and sugary drinks that increase triglycerides
Refined carbohydrates, such as white bread and white flour products
Restaurants and fast food with hidden grease.

6. Other factors of life style.

Low physical activity, fat around the abdomen, smoking, excessive alcohol and constant stress can also worsen the lipid profile. Smoking, in particular, lowers HDL and damages arteries. Lack of sleep also has a negative effect on metabolism. Other factors of life style.

Possible Reason	How It Raises Cholesterol	Can Diet Alone Fix It?
Family history / FH	Liver clears LDL poorly	Usually not; medication often needed
Hypothyroidism	Slower LDL removal	No; treat the thyroid first
Menopause	Falling estrogen raises LDL	Partly; lifestyle plus medical advice
Saturated fat intake	Liver makes more LDL	Yes, often helps
Inactivity and excess weight	Lower HDL, higher triglycerides	Yes, with regular exercise
Certain medications	Alter lipid metabolism	No; discuss with your doctor

In summary, don’t blame yourself if your cholesterol is high despite eating healthy. It can be caused by your body composition, and there is a solution.

How Does Cholesterol Leave the Body?

Making villosterol is one aspect, but getting it out of the body is equally important. The body has no way to completely break down cholesterol, so the main way to remove it is the liver and intestines.

Step 1: The role of HDL (reverse cholesterol transport). HDL particles pick up excess cholesterol from the walls of the body’s cells and arteries and transport it back to the liver. This is called reverse cholesterol transport, as if HDL acts as a cleaning vehicle.

Step 2: Processing in the liver. The liver either retains this cholesterol for reuse, or converts it into bile acids. In fact, the biggest way cholesterol is spent in the body is to make bile acids.

Step 3: Exfoliate through the mouth. Bile acids and some direct cholesterol are released into the intestine via the gallbladder. to help break down the fat.

Step 4: Exfoliate through the mouth. There is an interesting thing here. The bulk of the bile acids that reach the intestine, usually around 95%, are reabsorbed and returned to the liver. This process is called enterohepatic circulation. Only the part that is not absorbed goes out of the body with the faeces.

That’s why things that block bile acids in the intestine and don’t allow them to be reabsorbed force the liver to draw more cholesterol from the blood to make more bile acids. It reduces LDL in the blood.

What helps to get rid of cholesterol?

Soluble fiber is found in oats, apples, beans, and lentils. It binds bile acids in the intestine.
Plant Sterols and Stanols: Some are found in fortified foods and nuts and reduce the absorption of cholesterol in the intestine.
Regular Exercise: Helps to increase HDL and cleanse LDL.
Medications: Doctors prescribe statins, ezetimibe or bile acid sequestrants when needed, which work to reduce production or stop absorption in the intestine, respectively.

Understanding Your Numbers: LDL, HDL & Triglycerides

In the United States, the cholesterol test is called a lipid panel, which is usually done in the morning on an empty stomach or sometimes without fasting. The table below lists the most commonly used limits. All of these are in mg / dL.

Test	Desirable / Optimal	Borderline	High
Total Cholesterol	Below 200	200 to 239	240 and above
LDL (“bad”)	Below 100	130 to 159	160 and above
HDL (“good”)	60 and above (protective)	40 to 59 (men) / 50 to 59 (women)	Low if under 40 (men) / under 50 (women)
Triglycerides	Below 150	150 to 199	200 and above

Remember that these limits are a general guideline. Recent U.S. guidelines now look at your overall risk rather than just a number, meaning age, blood pressure, diabetes, smoking, and family history are also included. Two people may have the same LDL, but their risk of heart disease may be completely different. This is why it is important to check with your doctor.

How to Manage Cholesterol Naturally

Since the liver is the real factory, our strategy should be to give the liver a better environment, not just leave the “cholesterol stuff.”

1. Sensitivity to food

Reduce saturated fat: Reduce red meat fat, butter, processed meat and full-fat dairy.
Avoid trans fats completely. If “Partially hydrogenated oil” is written on the label, leave it.
Include healthy fats such as olive oil, fish, walnuts and almonds.
Try to eat fatty fish, such as salmon, at least twice a week.
Eat oats, beans, pulses, apples and vegetables daily to get soluble fibre.

2. The physical activity

According to U.S. guidelines, adults should get at least 150 minutes of moderate-intensity exercise a week, such as brisk walking. It increases HDL, lowers triglycerides, and keeps weight under control.

3. Weight and abdominal fat

Even modest weight loss, such as 5 to 10 percent of body weight, can improve LDL and triglycerides. The fat around the abdomen is especially harmful.

4. Get rid of bad habits

HDL begins to improve within a few weeks of quitting smoking. Reducing alcohol also reduces triglycerides.

5. Sleep and Stress.

Seven to eight hours of sleep per day and stress-control habits, such as light exercise, meditation or spending time with friends, are beneficial for heart health.

6. Medication, if needed.

For some people, especially in the case of FH or pre-existing heart disease, lifestyle alone is not enough. There’s no shame in it. That’s how it is Like someone who needs a shower. Statins and other drugs are used to reduce the risk of heart attack in millions of people. Always consult with your doctor to make a decision.

When Should You See a Doctor?

According to U.S. guidelines, adults age 20 and older should get a cholesterol test at least every four to six years. You need to test faster and more often.

Have had a heart attack or stroke in the family
You have diabetes, high blood pressure or kidney disease
You smoke or are overweight.
Cholesterol has increased in the last test.
LDL 190 mg / dL or higher, which may be a sign of FH
If you have chest pain, shortness of breath,

And if you have chest pain, shortness of breath, leg pain when walking, or sudden weakness and difficulty speaking, don’t wait, call 911 immediately in an emergency. Increasing cholesterol itself has no symptoms, which is why it is called a silent threat, and testing is the only way out.

Frequently Asked Questions (FAQs)

Q: Why does the body make cholesterol?

A: The body makes cholesterol because it is essential for the formation of cell walls, hormones, vitamin D and iron. If the body does not make it itself, all these tasks will be hindered.

Q: Why do I have high cholesterol when I eat healthy?

A: About 80% of cholesterol is produced by the body. Genetics, thyroid, age, hormones, and certain medications can affect this production or cleansing, even if your diet is optimal.

Q: How does cholesterol leave the body?

A: Excess cholesterol is carried to the liver, the liver converts it into bile acids, and it is excreted from the body with feces, reaching the intestine through the esophagus. Soluble fiber improves this process.

Q: How is cholesterol produced in the body?

A: The liver and other cells make cholesterol in about 25 steps, starting with acetyl-CoA. The most important control of this process is carried out by the HMG-CoA reductase enzyme, which is inhibited by statin drugs.

Q: Do eggs raise cholesterol?

A: In most healthy people, the effect of eggs on blood cholesterol is relatively low, because the liver reduces its production somewhat according to the amount received from food. However, people with diabetes or FH should consult a doctor.

Q: Can high cholesterol be reversed naturally?

A: In many people, cholesterol is significantly improved by diet, exercise, and weight loss. However, for genetic reasons, lifestyle alone is not enough and medication may be required.

Conclusion:

Cholesterol is not an enemy, but a necessity of the body. The main thing is to maintain a balance between its production and cleanliness. You see that about 80 percent of the cholesterol your liver makes and only 20 percent comes from food, so it’s not enough to just give up the “cholesterol stuff.” Genetics, hormones, thyroid and lifestyle all together determine its level.

Don’t panic if your cholesterol is elevated in the report. Reduce saturated fat, increase fiber, move every day, take care of your liver, and above all, stay in touch with your doctor. Small but constant changes make a big difference over time.