Yes. And first, one correction to my previous answer: the headline you gave is about chronic/hidden inflammation, not primarily insulin resistance. I checked the current study/report behind the headline. The study was led by researchers from the MRC Laboratory of Medical Sciences and Imperial College London and involved about 480,000 UK adults.
🫀 What is the “hidden condition”?
The condition is chronic low-grade inflammation — inflammation that stays active in the body for a long time without necessarily causing obvious symptoms.
Inflammation itself isn’t always bad. It’s part of the body’s normal defense system. The problem is when inflammatory activity remains elevated for years.
The new research suggests that higher levels of inflammation were associated with changes in the structure of the heart, and these changes could develop before obvious cardiovascular disease appears.
How can inflammation affect the heart?
Think of it like this:
Long-term inflammation → blood-vessel problems + changes in heart structure → reduced heart function → higher cardiovascular risk
Researchers found associations with changes such as:
- Thicker heart walls
- Smaller heart chambers
- Reduced ability of the heart to fill properly with blood
These changes can occur silently, meaning a person may feel completely normal while changes are developing.
❤️ Why does a thicker heart wall matter?
The heart is a muscular pump.
When the heart muscle becomes thicker, it doesn’t necessarily mean the heart is stronger. A thickened heart muscle can become stiffer.
That can make it harder for the heart to relax and fill with blood between beats.
Over time, structural changes like these can contribute to heart failure, particularly problems with the heart’s relaxation/filling phase.
🩸 How does inflammation increase heart-attack risk?
Inflammation can affect the blood vessels, particularly the inner lining of arteries.
Long-term inflammation is involved in the development and progression of atherosclerosis — buildup of fatty/cholesterol-containing plaque inside arteries.
If a plaque becomes unstable and ruptures, a blood clot can form. If that clot blocks a coronary artery, part of the heart muscle can suddenly lose its blood supply.
That’s a heart attack.
So the important point is:
Inflammation doesn’t mean a heart attack is about to happen.
Rather, persistent inflammation can be one part of a long process that contributes to cardiovascular disease.
📊 What did this new study actually find?
The researchers studied approximately 480,000 adults in the UK and looked at inflammation, heart structure and cardiovascular outcomes. The report says people with higher inflammation had a 43% higher risk of heart attack and stroke compared with those with the lowest inflammation levels.
But this needs an important clarification:
43% higher risk does NOT mean that 43 out of every 100 people will have a heart attack.
It describes a relative difference in risk between groups. It also doesn’t prove that inflammation alone caused every cardiovascular event.
That’s an important distinction when reading health headlines.
🤔 Why is it called “hidden”?
Because chronic inflammation can exist without obvious symptoms.
Someone may:
- go to work normally
- exercise occasionally
- feel generally fine
- have no chest pain
- have no known heart disease
…and still have biological processes associated with cardiovascular risk.
That’s why researchers are interested in identifying risk before a person develops obvious heart disease.
🔥 What can cause long-term inflammation?
The study associated higher inflammation with several factors, including:
- Excess body fat/obesity
- Smoking
- Psychological stress
- Unhealthy lifestyle factors
- Socioeconomic disadvantage
These factors can interact with one another rather than acting independently.
Other medical conditions can also contribute to systemic inflammation.
😴 What about stress?
This is particularly interesting.
Long-term psychological stress can affect the body’s hormonal and nervous-system responses. Chronic stress is also associated with behaviors and conditions that affect cardiovascular health, such as poor sleep, physical inactivity, smoking, weight gain and high blood pressure.
The new study found an association between inflammation and factors including psychological stress.
That doesn’t mean ordinary temporary stress damages your heart. The concern is more about persistent, long-term exposure and the broader effects that accompany it.
🚨 Does this mean everyone with inflammation will get a heart attack?
No.
This is very important.
Inflammation is only one piece of cardiovascular risk. Heart-attack risk is influenced by many factors, including:
- Blood pressure
- LDL cholesterol
- Diabetes/blood sugar
- Smoking
- Obesity
- Physical inactivity
- Age
- Family history
- Kidney disease
- Existing artery disease
- Other metabolic factors
The study shows an association between inflammation and cardiovascular problems; it does not establish that inflammation alone determines who will have a heart attack.
🧪 Can inflammation be tested?
Yes. Doctors can measure inflammatory markers in blood.
One commonly used marker is C-reactive protein (CRP), and a more specific test called high-sensitivity CRP (hs-CRP) can sometimes be used in cardiovascular risk assessment.
But you shouldn’t interpret one elevated CRP result as “I have heart inflammation.”
CRP can increase because of many things, including infection, injury and other inflammatory conditions.
A doctor interprets the result together with the person’s overall health and cardiovascular risk.
🫀 How can you protect your heart?
The practical message isn’t to obsess over inflammation testing. It’s to reduce the major modifiable cardiovascular risks.
1. Don’t smoke
Smoking damages blood vessels and substantially increases cardiovascular risk.
2. Stay physically active
Regular activity helps cardiovascular fitness, blood pressure, weight and metabolic health.
3. Maintain a healthy weight
Excess visceral/body fat is associated with inflammation and several cardiovascular risk factors.
4. Control blood pressure
High blood pressure can gradually change the structure of the heart and damage arteries.
5. Keep cholesterol under control
Especially LDL cholesterol, which plays an important role in atherosclerosis.
6. Control blood sugar
Insulin resistance and diabetes are strongly connected with cardiovascular disease. Research also shows that insulin-resistant states can directly affect cardiac metabolism and structure.
7. Get enough sleep
Poor sleep can contribute to metabolic and cardiovascular problems.
8. Manage chronic stress
Not because every stressful day is dangerous, but because persistent stress can contribute to an unhealthy cardiovascular environment.
🚑 And don’t wait for a “warning sign”
A heart attack can occur suddenly. Seek emergency medical care immediately for symptoms such as:
- pressure, squeezing or pain in the chest
- pain spreading to the arm, shoulder, back, neck or jaw
- sudden shortness of breath
- cold sweating
- unexplained severe weakness
- nausea or vomiting, particularly with other symptoms
- fainting or severe dizziness
Women and older adults can sometimes have less typical symptoms.
The biggest takeaway
The study’s message is not “you have hidden heart disease if you have inflammation.”
It’s that long-term inflammation may be one of the processes quietly affecting the heart and blood vessels years before obvious cardiovascular disease appears. Detecting and controlling established risk factors early — blood pressure, cholesterol, blood sugar, smoking, excess weight, inactivity and other factors — is therefore important
