A major new study suggests that people may benefit from lowering their cholesterol much earlier in life than doctors currently recommend.
Researchers say that acting earlier could greatly reduce the risk of future heart attacks and strokes, even with only small reductions in cholesterol levels.
The study was carried out by researchers from Imperial College London and 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.
Heart disease remains one of the leading causes of death around the world. Millions of people develop blocked arteries over many years without noticing any warning signs. Often, the first sign of trouble is a heart attack or stroke.
One important factor linked to heart disease is LDL cholesterol, sometimes called “bad cholesterol.” LDL particles move cholesterol through the bloodstream. When LDL levels stay too high for many years, cholesterol can slowly build up inside artery walls.
Over time, these fatty deposits form plaques in the arteries. This process is known as atherosclerosis. As plaques grow, arteries become narrower and less flexible. If a plaque breaks apart, it may trigger blood clotting that blocks blood flow to the heart or brain, leading to a heart attack or stroke.
Doctors currently decide whether patients need cholesterol-lowering medicines by estimating their risk of heart disease over the next 10 years. In the United Kingdom, guidelines from the National Institute for Health and Care Excellence, also known as NICE, recommend statin treatment mainly for people considered at higher risk.
People with lower short-term risk are often not offered treatment because the immediate benefits may appear smaller. However, the new study suggests this approach may miss an important opportunity to prevent disease much earlier.
The researchers analyzed data from 17 clinical trials involving more than 100,000 people, most of whom had not yet experienced heart disease or strokes. They compared patients who lowered LDL cholesterol earlier with those who received treatment later after their cardiovascular risk had already increased.
The results showed that reducing LDL cholesterol by just 0.36 mmol per liter in lower-risk individuals reduced the long-term risk of major cardiovascular events by 25%. Major cardiovascular events included heart attacks and strokes.
By comparison, patients who started treatment later, after their risk became much higher, needed much larger reductions in LDL cholesterol to achieve the same benefit. In some cases, LDL had to be lowered by more than 3 mmol per liter, which often requires much stronger doses of statin drugs or multiple medications.
The researchers say this finding is important because lower doses of medication may reduce side effects and make treatment easier for patients to tolerate.
Dr. Irene Karungi from Imperial College London, the first author of the study, explained that current medical practice often waits until artery disease is already developing silently in the body. By that point, treatment becomes more difficult and intensive.
She said the study suggests earlier cholesterol lowering may offer greater long-term protection with less aggressive treatment.
Professor Kausik Ray, the senior author of the study, compared early cholesterol management to saving money for retirement. He explained that small actions taken earlier can create much bigger long-term benefits later in life.
Researchers also pointed out that cholesterol is only one part of heart disease risk. Smoking, diabetes, high blood pressure, obesity, poor diet, and lack of exercise may all speed up plaque buildup inside arteries.
Because artery damage develops slowly over many years, some experts now believe doctors should focus more on lifetime risk instead of only looking at the next 10 years.
The researchers noted that generic statin medications are now very inexpensive in many countries, sometimes costing only a few cents per pill. This means earlier treatment may not greatly increase healthcare costs.
At the same time, the team emphasized that more research is still needed before treatment guidelines officially change. Larger future studies will help confirm whether earlier cholesterol treatment produces the same benefits in wider populations.
The findings may eventually lead doctors to rethink how heart disease prevention is approached. Instead of waiting until patients become high risk, healthcare systems may begin encouraging earlier action to keep cholesterol levels under control before artery damage becomes serious.
The study highlights an important idea in medicine: prevention often works best before disease becomes advanced. Even small improvements made earlier in life may help people avoid major health problems many years later.
In reviewing the findings, the study appears to provide strong evidence that earlier cholesterol management could offer major public health benefits. The research involved a very large number of participants and analyzed multiple clinical trials, which strengthens the reliability of the results.
However, because the study combined data from previous trials rather than directly testing a new treatment plan in real-world patients over decades, further long-term research is still necessary. Even so, the findings support growing concerns that current treatment guidelines may focus too heavily on short-term risk instead of long-term prevention.
If future studies confirm these results, doctors may eventually recommend earlier and milder cholesterol treatment to help prevent heart disease before it silently develops.
Source: Imperial College London.
