is green tea a blood thinner

is green tea a blood thinner

Does Green Tea Thin Your Blood?

Green tea is one of the most popular healthy drinks in the world, but does it thin your blood? Recent studies suggest that it may indeed have a thinning effect on blood, with many potential benefits.

The Effects of Green Tea on Blood Thinning

Green tea’s anticoagulant properties are believed to be derived from its high levels of polyphenols, which have natural blood-thinning properties. Polyphenols inhibit the clotting of red blood cells, ultimately reducing the risk of clotting and stroke.

One study conducted on rats found that green tea had an anticoagulant effect, which reduced the tendency of the rats’ blood to clot. In a separate study conducted on rabbits, consuming green tea led to a reduction in their platelet aggregation.

Benefits of Green Tea as a Blood Thinner

The potential benefits of green tea as a blood thinner include:

  • Lower Risk of Heart Disease: By thinning the blood, green tea may help to reduce the risk of atherosclerosis, a condition in which plaque builds up on the walls of the arteries and increases your risk of stroke or heart attack.
  • Reduced Blood Pressure: Polyphenols may also help to reduce blood pressure, as green tea has been found to reduce hypertension in those with high blood pressure.
  • Lower Risk of Blood Clots: Blood clots are a common and serious medical condition, and green tea may help to reduce the risk of them forming in veins or arteries.

Side Effects of Green Tea as a Blood Thinner

Consuming large amounts of green tea can thin the blood too much, which can lead to excessive bleeding. There are also potential drug interactions, so it is important to talk to a doctor before taking any supplements or teas that contain green tea.


Overall, green tea may be beneficial as a natural blood thinner. While more research is needed, current studies suggest that it can reduce the risk of heart disease, lower blood pressure, and reduce the risk of blood clots.

However, it is important to always discuss taking green tea with a doctor to ensure that it does not interact with any medications or cause any adverse symptoms.


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