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Does Green Tea Thin Your Blood

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7 Health Benefits of Green Tea & How to Drink it | Doctor Mike

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You Docs: Why You Shouldn’t Drink Green Tea 24 Hours Before A Blood Test

Q. Why do my doctors tell me not to drink green tea 24 hours before a blood test or three days before surgery? How is it harmful?

Some of the very properties that make green tea so great for you have the potential to mess with your blood tests and operations. Green tea can prevent blood clotting, much like aspirin does .

The real reason not to drink it before blood tests is the same reason docs don’t want you to eat anything before blood tests: Like food, the green brew can alter your blood sugar levels in ways that could throw off the results of a diabetes test. If you drink green tea with sugar in it, that also could elevate your triglyceride levels. Finally, your docs may consider green tea an herbal supplement, and many physicians want you to stop all herbs and supplements before tests or surgery, since they may contain contaminants that could interfere with testing or medications.

Q. My fiance has polycystic kidney disease, and his kidneys function at only 23 percent. I’ve heard there is a diet that will help him, but I haven’t been able to find any information on it. Do you know of such a thing?

Q. My 17-year-old daughter refuses to eat meat and fish, avoids eggs and now won’t eat anything with gelatin. She doesn’t like many vegetables, and survives mainly on mac and cheese, peanut butter and French fries. Is this a phase? Is there a magic spell to get her to eat healthier foods?

Garlic Is A Natural Blood Thinning Food

Garlic can help to prevent clotting because it helps to lower clotting enzymes in the blood.

One study on rats found that fresh garlic has an anti-thrombotic effect and can help improve blood health. The study also showed that onions can help thin the blood, although they werent as effective as garlic.

A review into the medicinal properties of garlic also found that garlic supplements can help to prevent thrombosis. Taking aged garlic can help to prevent clots from forming and boost blood vessel health.

Other studies have shown that garlic can help to prevent cardiovascular disease and lower high blood pressure naturally.

Find out more reasons why you should add garlic to your diet and how this herb has powerful antibiotic properties.

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Other Natural Blood Thinners

There are other blood thinning foods that can benefit your health and help prevent blood from becoming too thick. Here are a few:

Grape seed extract. Taking grape seed extract is useful to help address issues related to blood circulation. Researchers say that the anticoagulant properties of grape seed extract can cause your blood to thin too much if you are taking warfarin or aspirin as blood thinners.

Feverfew. Researchers have found that the medicinal plant feverfew can inhibit the activity of platelets. Feverfew can reduce blood clotting and should be avoided if you take blood thinners.

Dong quai. This herb is traditionally used in Chinese medicine and helps prevent platelets from clumping together to form clots.

Bromelain. Bromelain is an enzyme found in pineapples that has antithrombotic activities. Bromelain affects blood coagulation and can help to reduce clotting.

What Is Green Tea

Does Green Tea Affect Coumadin?

Green tea is a product made from the Camellia sinesis plant and it is also known as Camellia theifera, Constituant Polyphénolique de Thé Vert, CPTV, EGCG, Epigallo Catechin Gallate, Extrait de Camellia Sinensis, Extrait de Thé Vert, Extrait de Thea Sinensis, Green Sencha, Green Tea Extract, Green Tea Polyphenolic Fraction, GTP, GTPF, Japanese Tea, Kunecatechins, Poly E, Polyphenon E, PTV, Té Verde, Tea, Tea Extract, Tea Green, Thé de Camillia, Thé Japonais, Thé Vert, Thé Vert Sensha, Thea bohea, Thea sinensis, Thea viridis, Yame Green Tea, Yame Tea, and other names.

Green tea has been used in alternative medicine as a likely effective aid in treating genital warts, high cholesterol, and maintaining mental alertness.

Green tea has been used in alternative medicine as a possibly effective aid in treating clogged arteries, endometrial and ovarian cancer, low blood pressure, osteoporosis, changes in cervical cells due to human papiloma virus , white patches in the gums and the prevention of Parkinson’s disease.

Other uses not proven with research have included various cancers acne, heart disease, diabetes, infertility, high blood presure, obesity, respiratory infections, improvement of athletic perfomrance, wrinkles and others.

It is not certain whether green tea is effective in treating any medical condition. Medicinal use of this product has not been approved by the FDA. Green tea should not be used in place of medication prescribed for you by your doctor.

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Medications For Diabetes Interacts With Green Tea

Green tea contains caffeine. Caffeine can either increase or decrease blood sugar. Diabetes medications are used to lower blood sugar. Taking some medications for diabetes along with caffeine might change the effects of the diabetes medications. Monitor your blood sugar closely. The dose of your diabetes medication might need to be changed.

Main Food Sources Of Vitamin K

High Content Cabbage, Brussels sprouts, spinach, kale, turnips
Average Content Asparagus, avocado, broccoli, carrots, celery, cauliflower, red cabbage, cucumber, watercress, green beans, oils , lettuce , fresh parsley, leek, green peas, tomato

So, in answer to the original question, no, it isnt necessary to avoid green vegetables because the Vitamin K they contain enables a better control of both coagulation and medication. Good to know, those who have the most difficulty managing their INR are often those who do not eat Vitamin K and green vegetables.

Our heart-healthy menus are approved by the nutritionists at EPIC, Montreal Heart Institutes Center for Preventative Medicine, even for their anticoagulation therapy patients. Why not give them a try to help plan your meals?

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Can You Drink Too Much Green Tea

As with most health drinks, green tea is best drunk in moderation, especially if you are sensitive to caffeine. If youre looking to stay hydrated drinking plenty of water throughout the day is best and limiting caffeine drinks to before lunchtime can help to limit the effect caffeine has on sleep. Some studies have explored whether green tea may reduce the bodys ability to absorb iron from the foods you eat, this may be something you consider when drinking green tea.

May Protect The Brain From Aging

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Not only can green tea improve brain function in the short term, it may also protect your brain as you age.

Alzheimers disease is a common neurodegenerative disease and the most common cause of dementia in older adults .

Parkinsons disease is another common neurodegenerative disease and involves the death of dopamine-producing neurons in the brain.

Several studies show that the catechin compounds in green tea can have various protective effects on neurons in test tubes and animal models, possibly lowering the risk of dementia (

41 ).

Type 2 diabetes involves having elevated blood sugar levels, which may be caused by insulin resistance or an inability to produce insulin.

Studies show that green tea may improve insulin sensitivity and reduce blood sugar levels .

One study in Japanese individuals found that those who drank the most green tea had an approximately 42% lower risk of type 2 diabetes .

According to a review of 7 studies with a total of 286,701 individuals, tea drinkers had an 18% lower risk of diabetes .


Some controlled studies show that green tea may cause mild reductions in blood sugar levels. It may also lower the risk of type 2 diabetes.

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Is Green Tea Safe

While there are several side effects to watch out for, green tea is considered safe by the FDA when used in moderation. Most of these negative side effects are due to the caffeine content and only occur when the beverage is consumed in large amounts. Stick to suggested amounts and avoid green tea if you are sensitive to caffeine. If you suffer from any illnesses that predispose you to side effects, consult with your physician before drinking green tea.

Aside from that, drink green tea or take a green tea extract in moderation to reap the healthy benefits of this plant. You can choose to steep loose leaf tea or opt for the convenience of tea bags.

To read about the benefits of green tea please go here.

Stay Safe While Taking Your Blood Thinner

You can be bleeding but not see any blood. For example, if you fall and hit your head, bleeding can occur inside your skull. Or, if you hurt your arm during a fall and then notice a large purple bruise, this means you are bleeding under your skin.

Because you are taking a blood thinner, you should try not to hurt yourself and cause bleeding. You need to be careful when you use knives, scissors, razors, or any sharp object that can make you bleed.

You also need to avoid activities and sports that could cause injury. Swimming and walking are safe activities. If you would like to start a new activity that will increase the amount of exercise you get every day, talk to your doctor.

You can still do many things that you enjoy. If you like to work in the yard, you still can. Just be sure to wear sturdy shoes and gloves to protect yourself. If you like to ride your bike, be sure you wear a helmet.

Tell others.Keep a current list of all the medicines you take. Ask your doctor about whether you should wear a medical alert bracelet or necklace. If you are badly injured and unable to speak, the bracelet lets health care workers know that you are taking a blood thinner.

To prevent injury indoors:

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Green Tea: Lower Lipids Less Plaque

For your heart health, it pays to go green. With green tea, the leaves have been harvested and allowed to wither, and then steamed. There is no oxidation, says Brill. She recommends choosing green tea as often as possible if you’re a tea drinker. Just dont ruin it with sugar, says Brill. Clinical studies on drinking green tea have found that it helps lower LDL cholesterol and triglycerides good news for your heart. And drinking green tea is also associated with a lower risk of heart disease and death from heart attack or stroke, according to a study of more than 90,000 Japanese participants published in the March 2015 Annals of Epidemiology.

An 8 ounce cup of green tea gives you from 24 to 45 mg caffeine depending on how long its brewed, notes the Mayo Clinic. Powerful antioxidants in green tea especially one called epigallocatechin gallate, or EGCG can help prevent atherosclerosis, the buildup of plaque in the arteries. The EGCG can help boost metabolism, helping to make it easier to achieve and maintain a healthy weight. In addition, green tea helps improve the function of endothelial cells in blood vessels, says Erin Palinski-Wade, RD, who works with heart patients and is also the author of Belly Fat for Dummies.

Is It Good To Drink Green Tea Every Day

Breakthrough Information On Natural Blood Thinners And Adrenal Fatigue

Regularly drinking green tea has been said to have many health benefits, including protection from cancer, cutting cholesterol levels and lowering high blood pressure, however there is very little evidence to support these claims. As long as you dont exceed the recommended upper daily limits of 400mg of caffeine for adults, then drinking green tea wont do you any harm.

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While You Take Warfarin:

Eat the same amount of vitamin K each day. Do not change the amount of vitamin K you normally have from foods or supplements. This helps keep your INR at the same healthy level.

  • A big increase in vitamin K can lower your INR. This can cause dangerous clotting in your blood.
  • A big decrease in vitamin K can raise your INR. This can make it harder for your blood to clot. It can cause you to bleed too much. Do not avoid foods that contain vitamin K.

Do Green Vegetables Make Blood Thicker

Do green vegetables make blood thicker? Nitrogen, a chemical found in green leafy vegetables, plays a major role in delivering oxygen throughout the body by influencing blood thickness. A steady intake of nitrogen improves the bodys oxygen delivery system.

Do green vegetables thicken or thin the blood? Vitamin K Helps Blood Clot

This means that eating foods rich in vitamin K can interact with blood thinning drugs, making them less effective. Therefore, its important to talk with your doctor to make sure that your dosage is appropriate for your diet.

Do greens thin the blood? Related tags: Blood

Nitrate from leafy greens may thin the blood and help oxygen circulate around the body more efficiently, according to one of three studies conducted by the University of Cambridge and Southampton.

Do green leafy vegetables cause blood clots? Spinach, kale, and other leafy greens are all rich in vitamin K, which plays an essential role in forming blood clots.

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Is There A Natural Substitute For Blood Thinners

Turmeric Turmeric has long been regarded as a folk medicine, as it is a spice that adds a yellow hue to curry dishes. According to a 2012 study, the main active ingredient in curcumin is used as an anticoagulant. In order to prevent blood clots from forming, it works in conjunction with coagulation cascade components, or clotting factors.

Why Is Blood Bright Red

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Human blood is red because of the protein hemoglobin, which contains a red-colored compound called heme thats crucial for carrying oxygen through your bloodstream. Thats why blood turns bright cherry red when oxygen binds to its iron. Without oxygen connected, blood is a darker red color.

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Before Taking This Medicine

Before using green tea, talk to your healthcare provider. You may not be able to use green tea if you have certain medical conditions.

Ask a doctor, pharmacist, or other healthcare provider if it is safe for you to use this product if you have:

Green tea is considered possibly safe to use during pregnancy in moderate amounts .

Caffeine in green tea passes into breast milk and can affect a nursing baby. Do not drink excessive green tea if you are breast-feeding a baby.

Green tea is possibly safe in children in low amounts .

Precautions When Taking Natural Blood Thinners

There are many foods, supplements, and vitamins that help thin the blood to some extent. However, it is important to remember that it is difficult to dissolve blood clots naturally. Natural remedies to thin the blood may not be as effective as prescription medication.

If you take blood-thinning medication to prevent a stroke, thick blood, or clots, you should take into consideration that natural substances can interact with drugs. Taking medicinal amounts of natural substances such as turmeric, garlic, or ginger along with prescription blood thinners can cause the blood to thin too much. This can increase your risk of bleeding.

For example, research has shown that too much garlic can affect platelet function and increase the risk of bleeding. Garlic may also interact with prescription anticoagulants and increase their effectiveness.

Other studies have found that many herbal remedies can have a negative impact on warfarin.

Usually, including foods such as garlic, turmeric, or cinnamon in your diet as a flavoring or spice will not affect prescription medications to thin blood. However, it is essential to consult with your doctor before taking herbal supplements while taking blood thinners.

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From Cancer Prevention To Weight Loss Drinking These Teas Can Provide Noteworthy Health Benefits

Tea has plenty of health benefits, but find out which type is right for you. Photograph courtesy of Flickr user Alexandre Dulaunoy.

Whether you only sip it on dreary sick days or drink it religiously every morning, tea has enjoyed a great reputation throughout human historyand for good reason. Its been used for thousands of years to treat various illnesses and ailments, and its popularity endures today.

In the past few decades, science and medicine have bolstered a few of the drinks health claims. Below weve broken down some common types of teas and several studies that explored their health benefits. While most of the studies discussed below do not offer definitive proof of teas effects on health, they do suggest theres something special about this ancient brew.


Popular types: Sencha, dragon well, and gunpowderBenefits: Green tea is perhaps the most widely studied type of tea, thanks to its high concentration of a plant chemical known as EGCG. EGCG acts as a cleanup task force to eliminate the free radicals that wreak havoc, and has been shown to activate the bodys natural detox systems. In one trial, Mayo Clinic researchers tested green teas effect on patients with chronic lymphocytic leukemia and found that most of the individuals lymph node sizes decreased by 50 percent or more. Another study involving mice and neurological damage saw that green tea not only prevented further brain cell deterioration, but also rejuvenated already damaged cells.



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