is green tea high in oxalates

is green tea high in oxalates

Is Green Tea High in Oxalates?

Green tea is one of the world’s most popular beverages. It has been enjoyed for thousands of years for its flavor, aroma, and health benefits. But, some are concerned that green tea may be high in oxalates, so what is the truth?

What Are Oxalates?

Oxalates are naturally occurring substances found in some fruits, vegetables, grains and other foods. They are also found in some liquids, including tea. Oxalates can bind with calcium, forming compounds that reduce the absorption of the calcium into the bloodstream.

The Oxalate Content of Green Tea

Green tea is low in oxalates. Tests conducted on several varieties of green tea have found that the amount of oxalates contained in green tea is about 0.4 – 0.6 milligrams per gram of tea. This is much lower than the amount contained in other popular beverages such as coffee and cocoa.

Health Benefits of Green Tea

Despite its low oxalate content, green tea does have numerous health benefits. It is a rich source of antioxidants that can protect against free radical damage, lower inflammation, and reduce the risk of some chronic diseases. Green tea also contains compounds that may help to regulate blood sugar levels and boost the metabolism, promoting weight loss.

Potential Risks of Drinking too Much Green Tea

Although green tea is low in oxalates, it can still be dangerous if consumed in large amounts. Drinking too much green tea may lead to:

  • Headaches – Drinking large amounts of green tea can lead to headaches due to the caffeine and tannins it contains.
  • Stomach Upset – Excessive amounts of tea can irritate the lining of the stomach, leading to nausea and other digestive issues.
  • Dehydration – Green tea has diuretic properties which can cause the body to lose more water than it takes in.


Green tea is generally low in oxalates and has many health benefits. However, it is important to remember that it can become dangerous if consumed in large amounts. Always check with your doctor before adding large amounts of green tea to your diet.

Enjoy green tea in moderation to reap the full benefits and stay safe!


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