You can feel healthy and still have high cholesterol.
That is what makes it easy to miss. High LDL cholesterol can slowly raise your risk of heart disease and stroke, often without causing warning signs along the way.
A major study published in JAMA on July 29, 2026, shows just how large this hidden health problem has become. Researchers found that high LDL cholesterol was linked to about 3.6 million deaths worldwide in 2023. It was also linked to more than 90 million years of healthy life lost because of illness, disability, or early death.
The total health burden linked to high LDL cholesterol has grown by 38.5 percent since 1990.
This does not mean that every person with high cholesterol will have a heart attack or stroke. It does mean that high LDL remains one of the most important health risks we can identify and often do something about.
The best time to understand this risk is before it changes your life.
What Did the New Study Find?
The researchers looked at health information from 204 countries and territories. They used hundreds of studies to estimate how many deaths and years of lost health were linked to high LDL cholesterol.
In 2023, they estimated that elevated LDL cholesterol was linked to:
-
About 3.6 million deaths
-
More than 90 million years of healthy life lost
-
About 6 percent of all deaths worldwide
The researchers also found some good news. The rate of death and illness linked to high LDL has gone down when age and population changes are taken into account. This suggests that better testing and treatment are helping many people.
At the same time, the total number of people affected continues to rise. More people are living longer, populations are growing, and many people do not know they have high cholesterol or are not receiving the care they need.
The study looked at large groups of people. It cannot predict exactly what will happen to one person, and it cannot prove that LDL caused every health outcome included in its estimates. However, it brings together a large amount of research on a well-known and treatable heart health risk.
Why Should You Care About LDL?
Your body needs cholesterol. It uses cholesterol to build cells, make hormones, and perform other important jobs.
The problem is not that cholesterol exists. The problem is having too much of certain types moving through your blood.
LDL stands for low-density lipoprotein. It carries cholesterol through the bloodstream. When LDL stays high, more cholesterol-containing particles can enter the walls of your arteries.
Over time, this can help create plaque. Plaque is a buildup of cholesterol, fat, calcium, and other materials inside an artery. As plaque grows, the artery can become narrow or less flexible. A piece of plaque can also break open and lead to a blood clot.
This process can increase the risk of a heart attack or stroke.
The key words are over time.
High LDL usually does not cause immediate symptoms. The effects can build slowly for years or even decades. That is why the number of years you spend with high LDL may matter, not just the result of one blood test.
You May Not Feel Anything Is Wrong
Most people with high cholesterol do not feel sick.
You may have normal energy, exercise often, eat well, and maintain a healthy weight. None of those things guarantee that your LDL is in a healthy range.
You also cannot tell whether plaque is forming inside your arteries based on how your body feels day to day.
The absence of symptoms is not the same as the presence of health.
This does not mean you should be afraid of what may be happening inside your body. It means that testing can give you information your symptoms cannot.
At Jyzen, we believe health testing should help you understand what may be changing beneath the surface. Earlier understanding gives you more time to decide what to do next.
Your Standard Cholesterol Test Is a Starting Point
A standard cholesterol test, also called a lipid panel, usually measures:
-
Total cholesterol
-
LDL cholesterol
-
HDL cholesterol
-
Triglycerides
These numbers can provide useful information about heart and metabolic health.
However, the word “normal” on a lab report does not always mean a result is ideal for you. Your age, family history, blood pressure, blood sugar, inflammation, medical conditions, and other risk factors can change how your doctor views the same number.
For example, an LDL level that may be acceptable for someone at low risk may be too high for someone who already has heart disease, diabetes, kidney disease, or a strong family history of early heart attacks.
This is why cholesterol results should be interpreted in the context of your whole health.
LDL May Not Tell the Whole Story
A standard lipid panel is important, but some people may benefit from looking at additional markers.
Two people can have the same LDL result and still have different levels of cardiovascular risk. Added testing may help explain why.
ApoB
ApoB, short for apolipoprotein B, helps estimate how many cholesterol-carrying particles are moving through your blood.
Think of LDL cholesterol as the amount of cargo being carried. ApoB gives your doctor more information about the number of vehicles carrying that cargo.
A person may have an LDL result that does not look very high but still have a large number of particles. More particles may create more chances for them to enter the artery wall.
The 2026 cholesterol guideline recommends selective ApoB testing when it may help provide a clearer view of risk. This may be useful for some people with high triglycerides, diabetes, metabolic health concerns, or known cardiovascular disease.
Lipoprotein(a)
Lipoprotein(a), often written as Lp(a), is another type of cholesterol-carrying particle.
Your Lp(a) level is mostly determined by your genes. Eating well and exercising are still important for your overall heart health, but lifestyle changes usually do not lower Lp(a) very much.
Many people with high Lp(a) do not know they have it because it is not included in a regular cholesterol panel.
The 2026 cholesterol guideline recommends that every adult have Lp(a) checked at least once. If your level is high, your doctor may pay closer attention to LDL, blood pressure, blood sugar, smoking, and other risks that can be changed.
Knowing you have high Lp(a) does not mean a heart attack or stroke is certain. It gives you and your physician another piece of information to guide your care.
Who May Need a Closer Look?
Everyone can benefit from knowing their basic cholesterol numbers. A more detailed assessment may be especially important when other risk factors are present.
These may include:
-
A parent or sibling who had heart disease at a young age
-
A personal history of heart disease or stroke
-
Diabetes or insulin resistance
-
High blood pressure
-
Kidney disease
-
High triglycerides
-
Smoking
-
Chronic inflammatory or autoimmune conditions
-
Polycystic ovary syndrome
-
Early menopause
-
A history of preeclampsia or gestational diabetes
-
An elevated Lp(a) or ApoB result
No single factor tells the whole story. The goal is to bring the pieces together so your care is based on your actual risk, not only a general lab range.
What Can You Do About High LDL?
The right approach depends on your results, medical history, family history, and overall cardiovascular risk.
For some people, lifestyle changes may make a meaningful difference. These can include:
-
Eating more fiber-rich foods
-
Limiting foods high in saturated fat
-
Choosing more whole and minimally processed foods
-
Exercising regularly
-
Maintaining a healthy weight
-
Avoiding tobacco
-
Supporting healthy sleep
-
Managing blood pressure and blood sugar
Soluble fiber, found in foods such as oats, beans, apples, and certain vegetables, can help reduce the amount of cholesterol absorbed into the bloodstream. Replacing some sources of saturated fat with unsaturated fats may also help lower LDL.
However, high cholesterol is not always caused by poor lifestyle choices.
Some people eat well, exercise, and still have high LDL because of genetics, age, hormones, medical conditions, or the way their bodies process cholesterol. Lifestyle is important, but it is not a reason to blame yourself or assume that effort alone will solve every problem.
Medication may be recommended when lifestyle changes are not enough or when a person’s risk is already high. Statins are commonly used, but other options are available. The choice should be based on a thoughtful conversation with a physician about the benefits, risks, and goals of treatment.
The goal is not to avoid medication at all costs. It is also not to place every person on the same treatment.
The goal is to understand your risk and make an informed decision while there is still time to protect your health.
What Is a Healthy LDL Level?
There is no single LDL goal that is right for everyone.
The 2026 cholesterol guideline recommends different goals based on a person’s level of cardiovascular risk. A person at lower risk may have a different goal from someone who has already had a heart attack, has known plaque, or has several major risk factors.
This is one reason it can be misleading to look at a result online and decide that it is either “good” or “bad” without more context.
Your cholesterol numbers are part of a larger picture that can include:
-
How long your LDL has been elevated
-
Your age and sex
-
Your family history
-
Your blood pressure
-
Your blood sugar and insulin health
-
Your triglycerides
-
Your Lp(a) and ApoB levels
-
Signs of inflammation
-
Whether plaque is already present
In some cases, a physician may also discuss a coronary artery calcium scan. This imaging test looks for calcified plaque in the arteries that supply blood to the heart. It is not needed for everyone, but it may help when a person and their physician are unsure how aggressively to treat their risk.
What This Research Means for You
The new JAMA study does not mean that everyone should become worried about cholesterol.
It shows that high LDL continues to affect millions of lives, even though we have tools to find it and often reduce the risk connected to it.
A simple blood test may reveal something you cannot feel. More detailed testing may help explain whether your personal risk is higher or lower than a standard cholesterol number suggests.
Most importantly, finding a risk factor is not the same as receiving a diagnosis of heart disease. It is an opportunity to understand what is happening and decide what support your body needs.
Your body changes long before your life does.
At Jyzen, physician-guided care looks beyond whether you currently feel sick. We bring together your laboratory results, medical history, family history, lifestyle, and other health data to help you understand the bigger picture.
Earlier understanding creates more opportunities to act.
Learn More About Physician-Guided Care at Jyzen
This article is for educational purposes only. It is not a substitute for personal medical advice, diagnosis, or treatment.
Research Sources
GBD 2023 LDL Cholesterol Collaborators. “Global Burden of Elevated LDL-C: Findings From the Global Burden of Disease Study 2023.” JAMA. Published online July 29, 2026.
American College of Cardiology and American Heart Association. “2026 Guideline on the Management of Dyslipidemia.” Published March 13, 2026.