Green Tea May Have Brain Healing Properties

by Sayer Ji

An exciting new study published in the journal Biochemical and Biophysical Research Communications reveals that green tea may have powerful brain healing properties, especially when it comes to preventing and perhaps even treating so-called ‘incurable’ neurodegenerative disorders such as Alzheimer’s, Parkinson’s and Huntington’s disease.

Titled, “Green tea catechins potentiate the neuritogenic action of brain-derived neurotrophic factor: role of 67-kDa laminin receptor and hydrogen peroxide,” the paper set out to explore green tea’s potential for increasing the activity of a nerve growth factor known as brain-derived neurotrophic factor (BDNF), essential for the growth, maintenance and survival of neurons:

Delivery of optimal amounts of brain-derived neurotrophic factor (BDNF) to regions of the brain affected by neurodegenerative diseases is a daunting task. Using natural products with neuroprotective properties, such as green tea polyphenols, would be a highly useful complementary approach for inexpensive long-term treatment of these diseases.

The researchers pointed out that increasing the production of BDNF in the brain is one approach worth pursuing, but that another “complementary approach” is “to potentiate the action of limited amounts of BDNF present in affected regions of the brain,” and that green tea may offer just that enhancement tool.

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The main perceived barrier to using EGCG in neurological problems, however, is that only very low levels are believed capable of reaching the brain.  Due to this limiting factor, the study also set out to ascertain what concentration ranges might produce a physiologically relevant effect in the brain.

Using a cell model, the researchers chose a type of neuron which expresses a high affinity receptor (TrkB) for BDNF known as PC12(TrkB) cells. These cells, “differentiate and induce neurite outgrowth in response to BDNF.”  A neurite is any projection from the cell body of a neuron, usually either an axon or a dendrite.

Using this model, they showed, “for the first time that treatment with extremely low concentrations (<0.1 μ g/ml) of unfractionated green tea polyphenols (GTPP) and low concentrations (<0.5 μ M) of their active ingredient, epigallocatechin-3-gallate (EGCG), potentiated the neuritogenic ability of a low concentration (2 ng/ml) of BDNF.”

EGCG is the primary polyphenol within green tea identified to possess a broad range of health benefits, over 100 of which we have indexed on our database and which can be viewed here: EGCG health benefits.

A μg/ml denotes a microgram per milliliter – i.e., a millionth of a gram per milliliter.  An ng/ml denotes an even smaller value of a nanogram, or billionth of a gram, per milliliter. The researchers noted: “Intriguingly, this [nerve growth factor promoting] effect requires only submicromolar concentrations of EGCG. This is significant as extremely low concentrations of polyphenols are believed to reach the brain after drinking green tea.”

The researchers acknowledged the limitations of their study, as the cell model will not usually convey the same level of certainty as an animal or human study. Nevertheless, green tea has been revered since time immemorial as a mind enhancing, longevity promoting beverage, and is consumed by billions around the globe daily as a source of mental clarity and focus. Do we really need, therefore, doubled-blinded, placebo-controlled and randomized clinical trials, before we start taking advantage of its benefits? I don’t think so.

For additional research on brain supportive and/or regenerative substances, take a look at the section on our database on neuritogenic substances and our section dedicated to Neurodegenerative Diseases. For a more elaborate review of the literature on green tea read “The Health Benefits of Green Tea.”

This article first appeared at GreenMedInfo.  Please visit to access their vast database of articles and the latest information in natural health. 

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