Green Tea and Blood Clots

Several green tea and blood clots studies found that drinking tea cuts clotting risk.



Thrombosis is a leading cause of heart disease and stroke.

Green tea acts like aspirin and blocks the formation of thromboxane A2, thus reducing the risk of heart attack and thrombotic stroke.

Thromboxane narrows our arteries. It also causes blood clots by clumping together blood platelets, which then cling on to the arterial walls. 

Together with cholesterols and fat, they may thicken and block the entire artery, causing a heart attack or stroke.

As we grow older, our arteries naturally harden; the loss of elasticity may cause high blood pressure.

It is the production of thromboxane in our body that hardens the arteries. By blocking the formation of thromboxane, green tea keeps our arteries supple and can reduce high blood pressure.

In addition, green tea also prevents blood clots in other ways.

Green tea inhibits a clotting agent called platelet activating factor (PAF) and a protein found in blood called fibrinogen, which is involved in the formation of blood clots.

If you are taking blood thinning medication, consult with your health adviser and use green tea cautiously.

Green tea may contain vitamin K, which, when used in large quantities, can reduce the blood thinning effects of warfarin (Coumadin®), a phenomenon that has been reported in a human case.

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