Researchers are warning that many people may be starting cholesterol treatment too late to fully protect their hearts.
A new international study suggests that lowering “bad cholesterol” earlier in life may prevent far more heart attacks and strokes than waiting until someone becomes high risk.
The study was led by scientists from Imperial College London together with researchers from University Hospital Aachen in Germany. The findings were presented at the European Atherosclerosis Society Congress in Athens and published in the American Journal of Preventive Cardiology.
For decades, doctors have known that high cholesterol increases the risk of heart disease. Cholesterol itself is a fatty substance that the body needs in small amounts. However, too much LDL cholesterol can become dangerous.
LDL cholesterol is often called bad cholesterol because it can slowly collect inside blood vessels. As the years pass, these fatty buildups form plaques along artery walls. This process can begin silently in early adulthood without causing symptoms.
Over time, plaques may harden, narrow the arteries, or suddenly rupture. When this happens, blood flow may become blocked, leading to serious problems such as heart attacks or strokes.
One reason heart disease is so dangerous is that people often feel completely healthy while artery damage slowly develops over many years. By the time symptoms appear, the disease may already be advanced.
Current medical guidelines in countries such as the United Kingdom often focus on a person’s chance of having a heart attack or stroke within the next 10 years. Doctors use this estimated risk to decide whether cholesterol-lowering drugs called statins should be prescribed.
People who are considered low risk usually do not receive statins because the immediate short-term benefits appear smaller. But the new research challenges this idea.
The scientists reviewed information from 17 clinical trials involving more than 100,000 people. Most participants had not yet developed serious heart disease.
The analysis showed that lowering LDL cholesterol earlier, even by a small amount, produced surprisingly strong long-term benefits.
In lower-risk people, reducing LDL cholesterol by only 0.36 mmol per liter lowered the long-term risk of major cardiovascular events by 25%. Cardiovascular events included conditions such as heart attacks and strokes.
However, once patients became higher risk and artery disease was more advanced, much larger cholesterol reductions were needed to achieve the same benefit. In some cases, LDL cholesterol had to be lowered by more than 3 mmol per liter.
This usually requires much stronger treatment, including higher doses of statins or combinations of several medications.
Researchers say this matters because stronger cholesterol treatment may increase the risk of side effects such as muscle pain or difficulty tolerating the drugs.
Dr. Irene Karungi, the lead author from Imperial College London, explained that waiting too long may allow artery damage to silently build up over many years before treatment begins.
According to the researchers, earlier action may allow people to gain the same protection using smaller amounts of medication.
Professor Kausik Ray, the senior author of the study, compared cholesterol management to investing money early in life. Small investments made earlier can grow into much larger long-term rewards.
The same may be true for heart health. Keeping cholesterol lower from a younger age may help prevent artery damage before it becomes difficult to reverse.
Heart disease remains one of the biggest health challenges worldwide. Aging populations, poor diets, obesity, diabetes, smoking, and inactivity all contribute to rising cardiovascular risk.
Researchers say prevention is becoming increasingly important because once artery disease becomes established, treatment becomes more difficult and expensive.
The study also highlights the growing idea that doctors may need to focus more on lifetime risk instead of only looking at short-term danger.
Someone may appear low risk over the next decade simply because they are younger, even though artery damage may already be slowly developing in the background.
The researchers noted that statins are now available as inexpensive generic medications in many countries. Because of this, earlier treatment might not create large additional healthcare costs.
Still, the scientists stressed that more large-scale studies are needed before official medical guidelines change. They want to confirm whether earlier cholesterol lowering produces the same long-term benefits in different populations.
Looking at the findings overall, the study offers an important new perspective on heart disease prevention. Its strength comes from analyzing a very large amount of clinical trial data involving over 100,000 participants.
The results strongly suggest that prevention works better when started early instead of waiting for serious disease to appear. However, the research mainly examined statistical relationships across previous studies, so scientists still need direct long-term trials to fully confirm the benefits of earlier treatment strategies.
Even so, the findings may influence future medical guidelines and encourage doctors to think more about long-term heart health instead of focusing only on short-term risk scores.
Source: Imperial College London.
