Does Turmeric Thin or Thicken Your Blood?


Turmeric is a popular yellow spice that has been used for centuries in Indian cuisine and medicine. These days, turmeric is gaining popularity in the West as a superfood and supplement due to its anti-inflammatory and antioxidant properties.

But there is some debate around whether turmeric has blood thinning or blood thickening effects. So what’s the real deal – does turmeric thin or thicken your blood?

Does Turmeric Thin or Thicken Your Blood

What Is Turmeric?

Turmeric is a plant in the ginger family that is native to Southeast Asia. The root of the turmeric plant is dried and ground into the familiar yellow powder we use as a spice.

Turmeric contains curcuminoids, the most abundant being curcumin. Curcumin gives turmeric its yellow color and provides many of its potential health benefits.

Turmeric has been used in Ayurvedic and Chinese medicine for thousands of years. More recently, science has started to back up some of its traditional uses.

Potential Benefits of Turmeric

Today, turmeric is most well-known for its anti-inflammatory effects. The curcumin in turmeric is a potent anti-inflammatory compound that works similarly to medications like ibuprofen.

Some research shows turmeric may also:

  • Boost antioxidant capacity
  • Improve arthritis symptoms
  • Reduce heart disease risk
  • Alleviate depression
  • Improve memory and brain function
  • Prevent neurodegenerative diseases like Alzheimer's
  • Ease digestive issues like bloating and gas
  • Speed recovery and reduce muscle soreness after exercise
  • Protect the gallbladder and treat gallstones
  • Delay fatigue during exercise
  • Treat skin conditions when applied topically

Much more research is still needed. But early findings are promising for using turmeric as a versatile therapeutic agent.

Now let’s dive into the debate – does turmeric thin or thicken your blood?

Does Turmeric Thin Your Blood?

There is some evidence that turmeric may have natural blood-thinning effects.

In the body, platelets are blood cells that help the blood clot and stop bleeding. When platelets clump together, they can form clots in your arteries or veins.

Blood thinners work by reducing the ability of platelets to stick together and form clots. They help prevent dangerous clots that can lead to heart attack, stroke and pulmonary embolism.

Some research indicates that turmeric may inhibit platelet aggregation – reducing the ability of platelets to clump and form clots.

A couple of studies have found curcumin to inhibit platelet aggregation at similar levels as aspirin in human and animal trials. But the effect required high doses of curcumin.

Other studies show that turmeric and curcumin increase bleeding time and reduce clot formation. Again, very high doses were used.

So in theory, turmeric may have mild blood-thinning effects at really high supplemental doses. But the evidence is inconsistent.

Some studies show no impact on bleeding time or other blood clotting factors when using turmeric or curcumin. The mechanisms are unclear.

Overall, current research does not conclusively prove turmeric is an effective blood thinner. More studies are needed to understand if and how turmeric affects clotting.

At culinary doses, any blood thinning effect of turmeric is likely insignificant.

Does Turmeric Thicken Your Blood?

On the flip side, some people claim that turmeric has blood thickening properties.

Blood thinners like warfarin work by blocking vitamin K, an essential clotting factor. There is some concern that taking high dose turmeric supplements could potentially counteract these effects.

The main argument is that turmeric contains vitamin K1. Vitamin K helps activate clotting factors in your blood. Deficiencies in vitamin K result in thinner blood.

It is true that turmeric contains vitamin K1. But the amount is minimal compared to doses that impact clotting.

One teaspoon of turmeric powder provides just 9% of the recommended daily intake for vitamin K. You would need to consume extremely high amounts of turmeric to get enough vitamin K to alter your clotting factors.

Some sources also argue turmeric is high in oxalates, which bind to calcium and could theoretically impact blood coagulation. But studies show turmeric is actually a low-oxalate food, and dietary oxalates are not a major factor in blood clotting.

There is no evidence that consuming turmeric in normal dietary amounts could thicken your blood or interfere with anticoagulant medications. At supplemental doses, it’s possible there is an interaction, but unlikely.

Is Turmeric a Natural Blood Thinner?

Based on current research, turmeric does not appear to have significant blood thinning or thickening effects in normal culinary or supplemental doses.

Studies do indicate turmeric and curcumin can impact clotting at really high concentrations. But the mechanisms are not fully clear.

Here is a quick summary:

  • Test tube and animal studies show turmeric and curcumin inhibit platelet aggregation and reduce clot formation at very high doses. But human studies are limited and inconsistent.
  • Turmeric is not an effective natural blood thinner at dietary or normal supplemental doses. Extremely high doses may possibly have mild thinning effects, but more research is needed.
  • Turmeric is unlikely to thicken blood at any reasonable dosage. The vitamin K1 content is low and not a practical concern for clotting.
  • More rigorous clinical studies in humans are required to understand if turmeric definitively has antiplatelet effects and how it might interact with blood thinners like warfarin or aspirin.

So in moderation, turmeric appears neutral in terms of impacting coagulation or bleeding risk. Only extremely high supplemental doses might alter clotting capacity.

If you are on blood thinners or have a bleeding disorder, check with your doctor before taking turmeric supplements. But normal culinary usage should not pose any problems.

Turmeric Dosage Recommendations

The curcumin in turmeric has low bioavailability, meaning your body has difficulty absorbing and utilizing it.

Studies typically use turmeric extracts standardized to high curcumin contents. Whole turmeric powder contains around 3% curcumin. You would need to consume huge amounts to get concentrations used in most studies.

With extracts, doses up to 8000 mg curcumin per day are considered safe according to research. But amounts over 2000 mg may irritate the gut.

For turmeric powder, daily doses up to 8 grams are considered safe and sensible. Higher doses may be problematic over the long term.

To get beneficial anti-inflammatory effects, aim for at least 500 mg standardized curcumin extract or about 1⁄2 to 1 teaspoon of turmeric powder daily.

The bottom line is you would have to consume crazy, unrealistic amounts of turmeric to significantly impact clotting function. Standard culinary and supplemental usage should not thin or thicken your blood.

Signs of Blood That's Too Thick or Thin

Blood clots are crucial – they stop bleeding and enable healing. But abnormal clotting can also block blood flow and oxygen to parts of your body.

Here are some signs your blood may be too thick or thin:

Thick blood symptoms:

  • Deep vein thrombosis (blood clot in leg)
  • Pulmonary embolism (blood clot in lung)
  • Stroke
  • Heart attack
  • Chronic headaches
  • Tingling or numbness
  • Dizziness
  • Reduced mental capacity
  • Erectile dysfunction

Thin blood symptoms:

  • Nosebleeds
  • Bleeding gums
  • Heavy menstrual bleeding
  • Abnormal bruising
  • Petechia spots on skin
  • Blood in urine or stool
  • Anemia

Monitor for these symptoms if you are concerned about blood clotting disorders. Proper thickness ensures your blood flows smoothly and clots normally.

Home Remedies to Balance Blood Thickness

You can modify your diet and lifestyle to help maintain balanced blood flow and clotting function:

Thicken blood naturally:

  • Eat foods high in vitamin K – leafy greens, beef liver, fermented foods.
  • Take vitamin K, fish oil or nattokinase supplements.
  • Apply pressure and elevate cuts or abrasions to stop bleeding.
  • Stay hydrated – dehydration thickens blood.

Thin blood naturally:

  • Eat raw fruits and vegetables and avoid processed meat – reduce oxidative stress.
  • Exercise regularly – improve circulation.
  • Lose excess weight – reduce blood pressure.
  • Cut back on alcohol and stop smoking – limit blood clot risk factors.
  • Take ginkgo biloba, garlic or nattokinase supplements.

See your doctor to identify any underlying causes for abnormal clotting. Get blood work done to check platelet levels and clotting times.

Does Turmeric Thin or Thicken Blood?

  • At culinary doses, turmeric likely has no significant impact on clotting or bleeding risk.
  • There is some evidence very high supplemental doses may have mild blood thinning effects. But the mechanisms are unclear and human data is lacking.
  • It is unlikely turmeric thickens blood through vitamin K or oxalates content in practical dietary amounts.
  • More research is still needed to make definitive conclusions on potential interactions between turmeric and coagulation.
  • Monitor for symptoms of abnormal blood thickness and discuss any concerns with your doctor.
  • Maintain balanced clotting function by staying hydrated, exercising, and eating a healthy diet.

Whether or not turmeric has any effect on your blood, it still appears beneficial for fighting inflammation and supplying antioxidants when used sensibly.

Just be cautious with extremely high doses of turmeric or curcumin extracts if you have blood clotting disorders or take anticoagulant medications. Check with your doctor first regarding any safety concerns or potential interactions.

But spicing up your cooking with this bright yellow root should not disrupt your blood flow or clotting capacity in regular culinary quantities.

Does cooking turmeric reduce its health benefits?

Some research shows that heat from cooking may decrease curcumin levels in turmeric. However, cooking turmeric with fats or black pepper may enhance absorption. Overall, cooked and raw turmeric still retain their health benefits.

What is the ideal turmeric dosage for health?

Consuming between 500mg-2000mg of turmeric extract standardized to 95% curcumin or about 1⁄2-1 teaspoon of turmeric powder daily is ideal for anti-inflammatory benefits. Higher doses are unlikely to provide additional benefits.

Does turmeric interact with blood pressure medications?

Some research indicates turmeric may slightly reduce blood pressure. Patients on blood pressure lowering medications should monitor their blood pressure when taking turmeric supplements. But culinary amounts are unlikely to cause interactions.

Can you take turmeric if you take birth control pills?

There is no evidence that turmeric interacts with birth control pills. However, turmeric may potentially impact absorption of some medications if taken at the same time. Separate doses by 2-3 hours just to be safe.

Is it safe to consume turmeric while pregnant?

Turmeric in food amounts is likely safe during pregnancy. But turmeric supplements are not recommended as curcumin may have uterus stimulating effects. Always check with your doctor first.

Can turmeric help reduce cholesterol?

Some research indicates turmeric may modestly improve cholesterol levels. The mechanisms are unclear but likely related to reduced inflammation and improved liver function. Turmeric alone is unlikely to significantly lower cholesterol.

Does turmeric interact with blood sugar lowering medications?

Curcumin may enhance the effects of diabetes drugs by further lowering blood sugar levels. Monitor your blood sugar closely when combining turmeric supplements with diabetes medications.

Can you take turmeric if you have gallstones or kidney stones?

High doses of turmeric may worsen existing gallstones or kidney stones in some individuals. Start with lower doses and stop using turmeric if you experience pain or discomfort.

Is it safe to take turmeric every day?

Yes, taking up to 500-2000mg turmeric extract or 1 teaspoon turmeric powder daily long-term is considered safe according to research. Spread doses throughout the day instead of a single large dose.


There is ongoing debate about whether turmeric has blood thinning or thickening properties. Current research shows that at normal dietary or supplemental doses, turmeric likely does not significantly affect coagulation or bleeding risk. Some test tube and animal studies indicate extremely high concentrations of turmeric or curcumin can inhibit platelet aggregation and reduce clot formation. However, the mechanisms are unclear and human clinical trials are limited and contradictory. While there is potential that very high doses may have mild anticoagulant effects, there is no solid evidence that turmeric can thin blood effectively. Claims that turmeric thickens blood are also unsubstantiated, as the vitamin K content is too low to impact clotting factors. More rigorous human trials are needed to truly understand if turmeric interacts with coagulation. But at normal culinary or supplemental amounts, turmeric appears neutral in terms of blood flow and clotting function.

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