Dont Forget To Drink Your Green Tea

Don’t forget to drink your green tea

Don’t forget to drink your green tea

Friday, September 14, 2012. The journal Molecular Nutrition & Food Research published an article online on June 13, 2012 that suggests a beneficial effect on the brain for a polyphenol found in green tea known as epigallocatechin-3-gallate (EGCG).

Yun Bai of the Third Military Medical University in Chongqing, China and colleagues cultured adult mouse hippocampal neural progenitor cells with varying concentrations of EGCG or no EGCG for 24 hours. "We proposed that EGCG can improve cognitive function by impacting the generation of neuron cells, a process known as neurogenesis," Dr Bai remarked. "We focused our research on the hippocampus, the part of the brain which processes information from short-term to long-term memory."

A significant increase in the number of neural progenitor cells was determined in cultures that received higher amounts of EGCG. Similar findings were obtained upon examination of the dentate gyrus area of the brain in adult mice that were treated with the compound.

The researchers then evaluated the effects of EGCG on memory and learning. "We ran tests on two groups of mice, one which had imbibed EGCG and a control group," Dr Bai explained. "First the mice were trained for three days to find a visible platform in their maze. Then they were trained for seven days to find a hidden platform."

The team observed a reduction in the amount of time needed to find the hidden platform in mice that received EGCG. "Our results suggest that EGCG enhances learning and memory in 4-month-old mice as shown by improvements in object recognition and spatial memory," the authors conclude.

"We have shown that the organic chemical EGCG acts directly to increase the production of neural progenitor cells, both in glass tests and in mice," Dr Bai stated. "This helps us to understand the potential for EGCG, and green tea which contains it, to help combat degenerative diseases and memory loss."

The authors remark that "Based on previous safety and pharmacokinetic studies, it is likely that a daily 1500–1600 mg bolus of EGCG in humans would achieve physiological levels similar to those in the sera of EGCG-treated (20 mg/kg) mice. Oral doses of similar magnitudes have been used in clinical trials, although EGCG has not been administered to humans on a regular basis."

"Green tea is a popular beverage across the world," Dr Bai noted. "There has been plenty of scientific attention on its use in helping prevent cardiovascular diseases, but now there is emerging evidence that its chemical properties may impact cellular mechanisms in the brain."

What's Hot

Three months of green tea extract results in reductions in inflammation, blood pressure and oxidative stress in obese men and women

What's Hot

A report in the June, 2012 issue of Nutrition Research published the results of a double-blinded trial which found a benefit for supplementation with green tea extract on blood pressure, inflammation, oxidative stress and insulin resistance. "To the best of our knowledge, this is the first clinical trial performed on obese, hypertensive patients," announce authors Pawel Bogdanski and his colleagues at Polands Poznan University.

Fifty-six men and women with high blood pressure and a body mass index of 30 kg/m2 or more were randomized to receive a capsule containing 379 milligrams green tea extract or a placebo for three months. Blood pressure and serum levels of lipids, glucose, antioxidants, insulin and the inflammatory markers tumor necrosis factor alpha (TNF-a) and C-reactive protein (CRP) were measured before and after treatment.

At the end of the study, subjects who received green tea had improved insulin resistance, blood pressure, lipids, inflammation and total antioxidant status. Dr Bogdanski and his associates remark that green tea's anti-inflammatory and antioxidant actions may explain its cardioprotective and blood pressure-lowering effects.

"The present findings demonstrate strong evidence for a beneficial influence of green tea extract supplementation on blood pressure, carbohydrate metabolism, and lipid profile, as well as on inflammation and oxidative stress, in patients with obesity-related hypertension," the authors write. "Further studies on a larger scale and with a longer duration of observation are needed to support our data and to explore their mechanistic basis."

Latest Supplements

Super K with Advanced K2 Complex

Integra-Lean® Irvingia, 150 mg, 60 vegetarian capsules
Item #01292

add to cart

An extract from an African mango called Irvingia gabonensis has been shown to help support leptin sensitivity in overweight people. In a recently published study, irvingia demonstrated beneficial effects upon leptin blood levels, followed by weight loss and inches off the waistline. In addition to supporting healthy leptin sensitivity, irvingia has demonstrated the following beneficial effects on key aspects of metabolism:

  • Glycerol-3-phosphate dehydrogenase is an enzyme involved in the complex biochemical process that converts ingested starch and sugar calories to stored body fat. Irvingia has been shown in studies involving fat cells to reduce the activity of glycerol-3-phosphate dehydrogenase, which may help reduce the impact of starch and sugar calories on body fat.
  • Scientific research on fat cells suggests that irvingia has alpha-amylase-inhibiting properties (like InSea2® and Phaseolus vulgaris) which can help support a slowing of the rate of carbohydrate absorption from the intestines and a reduction of the caloric impact of starchy and sugary foods.
  • Adiponectin is a hormone involved in helping to maintain insulin sensitivity on the membranes of energy-producing cells.
Pyridoxal 5'-phosphate capsules

Bio-Collagen with Patented UC-II®, 40 mg, 60 capsules
Item #01631

add to cart

Tender, sensitive joints can limit everyday activities. As people age and continue to put stress on their joints, they can compromise joint cartilage—which exposes small collagen fibers. The body's immune system mistakenly identifies these collagen fibers as foreign cells. This triggers an inflammatory response against the collagen-containing cartilage in one's own joints. Inflammation and joint discomfort can soon follow.

Life Extension® now offers Bio-Collagen with Patented UC-II®—a novel form of undenatured type II collagen from chicken cartilage. Taken orally, UC-II® travels to the intestinal tract where it "introduces" the immune system to the same type of collagen molecules found in joint cartilage.

Not just any form of collagen will do. Normally, when chicken collagen is processed, its molecular shape is changed. It loses bioactivity and becomes denatured—which researchers found has no beneficial effect on the immune system. Fortunately, a unique processing technique preserves the correct molecular shape of the collagen and preserves its bioactivity—producing a form known as undenatured collagen. The result of this innovative process is an undenatured chicken collagen called Bio-Collagen with Patented UC-II®.



Life Extension Update What's Hot
Green tea may help protect the brain during sleep apnea Scientists agree: chocolate and wine are good for the mind
Green tea may protect the brain in Parkinson's disease Flavonol improves mouse memory
Green tea helps prevent stroke-induced brain damage Drinking tea may help improve memory
Life Extension Magazine® Health Topics
New research on the health benefits of green tea Age related cognitive decline
Theanine: natural support for sleep, mood, and weight Prevention protocols
Green tea: the beverage of choice in the east, green tea shows promise as an anti-aging, cancer-fighting agent    


Phase 3™ is used under license. Integra-Lean® Irvingia is protected by U.S. Patent No. 7,537,790. Other patents pending. UC-II® is a registered trademark of InterHealth Nutraceuticals, Inc. U.S. Patent Nos. 5,645,851, 5,637,321, 5,529,786, 5,750,144, 7,083,820, 7,846,487, EP1435906 B1 and worldwide patents pending.