What causes elevated C-reactive protein?

C-reactive protein (CRP) is a protein synthesized by the liver. Elevated C-reactive protein levels are usually caused by factors such as infection, autoimmune diseases, and cardiovascular diseases. The specific analysis is as follows:

1. Infection

Infection is the most common cause of elevated C-reactive protein. During infection, the body's immune system releases cytokines, which stimulate the liver to produce CRP. Therefore, when the body is infected with bacteria, viruses, or other microorganisms, CRP levels significantly increase.

2. Autoimmune diseases

Autoimmune diseases are a group of disorders in which the immune system attacks the body's own tissues, causing inflammation and damage. For example, conditions such as rheumatoid arthritis, systemic lupus erythematosus, and scleroderma can lead to elevated CRP levels.

3. Cardiovascular diseases

Cardiovascular diseases include coronary artery disease, myocardial infarction, heart failure, and stroke. These conditions may damage the inner walls of blood vessels, triggering an inflammatory response and stimulating CRP production. Additionally, cardiovascular diseases can lead to vessel narrowing and thrombosis, which may also result in increased CRP levels.

Besides the above, elevated CRP levels may also be caused by tumors. Tumors themselves can stimulate the immune system, leading to higher CRP levels. For instance, lung cancer and pancreatic cancer may elevate CRP due to the malignancy itself or associated inflammatory processes. Patients are advised to promptly visit a reputable hospital and seek evaluation and management under the guidance of a qualified physician.