Researchers examined more than 20,000 people over the age of 40 in three major American studies.
They found a clear link between high levels of the substance Lp(a) in the blood and the risk of serious cardiovascular disease.
Lp(a) is similar to the cholesterol often referred to as “bad cholesterol,” but it contains an additional protein that may damage blood vessels more than regular LDL cholesterol.
According to the researchers, around one in five people has elevated Lp(a) levels.
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Most people experience no symptoms and are therefore unaware that they face a higher risk, SciTechDaily reports.
More serious cases
Participants in the study were followed for nearly four years.
During that period, around seven percent experienced serious conditions such as stroke, blood clots, or heart-related death.
People with the highest Lp(a) levels had about a 30 percent greater risk of severe heart problems.
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At the same time, the risk of stroke was around 65 percent higher compared with people with low levels.
Researchers observed the increased risk particularly among people who already had heart disease.
Simple blood test may help
The study was presented at an international heart conference in Montreal.
Researchers believe the findings could influence future screenings and treatments.
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A standard blood test can determine whether a person has elevated Lp(a) levels.
Researchers recommend that people with high levels work to lower their cholesterol and other risk factors.
Sources: SciTechDaily.
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