What is lipoprotein(a), a little-known cardiovascular risk factor

Lipoprotein(a), or Lp(a), is a substance found in the blood, similar to LDL cholesterol (the so-called “bad cholesterol”). The difference is that Lp(a) has specific characteristics that make it an independent cardiovascular risk factor.

Today we know that high Lp(a) levels may be associated with:

• a higher likelihood of developing atherosclerotic cardiovascular diseases, such as heart attack or stroke;
• conditions such as aortic valve stenosis.

For a long time, Lp(a) was not considered a central test in cardiovascular risk assessment.

In recent years, however, research has increasingly clarified its importance. For this reason, Lp(a) is now becoming more widely integrated into clinical practice: not because it is “new,” but because we have finally understood how useful it can be in better identifying patients at risk.

Lp(a) concentration is determined largely by genetics, so family history plays an important role. In other words, its level is largely inherited and tends to remain fairly stable throughout life.

This means that even a person who eats well, exercises regularly, does not smoke, and follows a healthy lifestyle may still have elevated Lp(a).

It is not the patient’s fault and does not depend on unhealthy habits: it is a genetic predisposition, but also highly valuable biological information to know.

A high Lp(a) value does not mean that a disease is already present and should not cause alarm.

It should instead be considered a warning sign, an additional element that helps better understand a person’s overall cardiovascular risk.

The point is not to be frightened, but to use this information to carry out more precise, personalized, and effective prevention.

In general, Lp(a) should be measured at least once in adult life, even in the absence of symptoms.

Measurement is particularly recommended in the following cases:

• family history of cardiovascular disease: if there have been early heart attacks, strokes, or other cardiovascular diseases in the family;
• high LDL cholesterol or LDL levels that are difficult to control;
• previous cardiovascular event (for example, heart attack or stroke);
• in-depth assessment of personal risk even in the absence of symptoms.

Measuring it is useful both in primary prevention, meaning in apparently healthy people, and in secondary prevention, meaning in those who have already had a cardiovascular problem and need the most accurate protection possible.

Lp(a) should never be interpreted on its own. Its meaning becomes truly useful only when included in a complete evaluation that also considers:

• LDL cholesterol;
• blood pressure;
• blood glucose and diabetes;
• smoking;
• family history of cardiovascular disease;
• lifestyle;
• any previous cardiovascular events.

It is precisely this overall view that allows the cardiologist to build a truly personalized prevention strategy.

Anyone with high Lp(a) should know that there is still a lot they can do to protect their heart. Even though genetic predisposition cannot be changed, it is possible to act very effectively on other risk factors. This means carefully controlling:

• LDL cholesterol;
• blood pressure;
• blood glucose;
• body weight;
• smoking;
• physical inactivity.

Knowing your Lp(a) helps you be more timely and more rigorous in prevention, before problems appear.

Research is currently developing highly promising targeted therapies to reduce Lp(a), and the results so far are encouraging.

At present, however, the central point remains another one: identifying risk early and intervening appropriately.

Lipoprotein(a) is not a diagnosis and should not be a source of fear. Instead, it is valuable information that can help people better understand their cardiovascular risk, take care of themselves with greater awareness, and act early.

The measurement of lipoprotein(a), when included in a complete cardiological evaluation, can provide very useful information both for people who feel well and want to focus on prevention, and for those who have already experienced a cardiovascular event and wish to reduce future risk.