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Thick blood is caused by a variety of conditions, such as heavy proteins in the blood, too much blood in circulation or a blood clot system imbalance, according to Southeastern Medical Oncology Center. Diseases such as cancer and lupus can also lead to thick blood. Continue Reading.
A blood clot forming in the arteries of the heart can result in a heart attack. Blood clots cause problems in the affected organ by cutting off oxygen flow. Thick blood is caused by heavy proteins, or by too much blood in the circulation. Too many red cells, white cells, and platelets will result in blood thickening.Another cause is an imbalance in the blood clotting system. Specific diseases include lupus, inhibitors, deficiency in protein C or S or antithrombin, or mutations in Factor 5 or prothrombin. Cancer can also cause blood thickening.Not all blood clots are caused by thick blood. Blood clots leading to heart attacks and strokes can be formed when thin blood comes into contact with plaque, which triggers a blood clot. Some blood clots result from sluggish blood flow or poor circulation. blood clot forming in the arteries of the heart can result in a heart attack. Blood clots cause problems in the affected organ by cutting off oxygen flow. Thick blood is caused by heavy proteins, or by too much blood in the circulation. Too many red cells, white cells, and platelets will result in blood thickening.