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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.
There are many times when you may feel your blood is running a little thin. If you bruise or bleed easily or have heavy periods, thickening your blood may be beneficial. In this case, adding vegetables to your diet that are high in vitamin K can help do the trick. However, as with any change in diet, you should always first consult with your physician. Thickening your blood too much can create other medical concerns such as blood clots, stroke, a lack of oxygen to cells and heart attacks.