Glycoprotein 12-5, also known as CA12-5, is a common hormone in human body and also a marker for many malignant tumors, such as breast cancer, ovarian cancer, rectal cancer, etc. The reference value of glycoantigen 12-5 is less than 35U/ml. If it exceeds the reference value, you need to be alert and there is a certain risk that you may suffer from ovarian malignancy, gastric cancer, pancreatic cancer, etc. However, it does not mean that you must suffer from breast cancer, ovarian cancer, rectal cancer and other malignant tumors if the index is elevated, but you need to combine it with clinical examination. If the CA12-5 index is slightly elevated, but the clinical examination is normal and the index value tends to be stable and does not increase anymore, there is no need to worry about it and regular review is sufficient; if the index value continues to increase and the clinical examination is abnormal, timely laboratory examination is needed to clarify the disease and provide symptomatic treatment under the guidance of doctors. Avoid excessive stress and agitation. Eat a light diet, consume more fruits and vegetables, take vitamins and exercise appropriately to improve immunity.