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Reference Guide
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CEA
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Carcinoembryonic Antigen

What's 
CEA
?
Carcinoembryonic Antigen (CEA) is a protein molecule found in various cells within the body, but it is mainly linked to specific tumors and the development of a fetus. It was first discovered in the blood of individuals with colorectal cancer, which is how it got its name. Interestingly, CEA levels are typically very low or even not present in healthy adults, as its production usually stops before birth. However, certain cancers can cause CEA production to start again. As a result, CEA is often used as a tumor marker in medicine, helping doctors monitor the treatment of specific types of cancer.
If Your Levels Are High
Elevated CEA levels might mean that your body is reacting to certain situations that trigger the production of this protein. This increase could be due to inflammation, infection, or non-cancerous conditions like liver disease, lung disease, or inflammatory bowel disease. It might also be a response to habits like heavy smoking or the use of specific medications, such as nonsteroidal anti-inflammatory drugs (NSAIDs) or corticosteroids. In some cases, high CEA levels could be linked to certain types of cancer, like colorectal, pancreatic, gastric, or breast cancer. However, it's important to remember that high CEA levels don't necessarily mean you have cancer, as many other factors can also cause these levels to rise.
Symptoms of High Levels
Symptoms of high levels of CEA are not specific and can vary widely depending on the underlying condition causing the elevation. They could range from no symptoms at all to more severe signs such as unexplained weight loss, fatigue, or discomfort in the abdomen.
If Your Levels are Low
Low levels of Carcinoembryonic Antigen (CEA) are generally a good sign, as this protein is usually not found in large amounts in healthy adults. It's mainly linked to certain cancers and fetal development, so having low levels could mean that your body is in a healthy state. However, there might be other factors contributing to these low levels, such as a vegetarian diet, specific medications, or a highly efficient immune system. It's also possible that your body is naturally managing and getting rid of any CEA production effectively. Keep in mind that low CEA levels don't always rule out the presence of cancer, but they can be a reassuring indicator of overall health.
Symptoms of Low Levels
Symptoms of low levels of CEA are typically non-existent, as this is generally the normal state for healthy adults.

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