ProHealth health Vitamin and Natural Supplement Store and Health
Home  |  Log In  |  My Account  |  View Cart  View Your ProHealth Vitamin and Supplement Shopping Cart
800-366-6056  |  Contact Us  |  Help
Facebook Google Plus
Fibromyalgia  Chronic Fatigue Syndrome & M.E.  Lyme Disease  Natural Wellness  Supplement News  Forums  Our Story
Store     Brands   |   A-Z Index   |   Best Sellers   |   New Products   |   Deals & Specials   |   Under $10   |   SmartSavings Club

Trending News

15 Health Benefits of Chia Seeds, According to Science

Tangerine Oil: A Citrusy Essential Oil With Well-Rounded Uses

Natural Remedies for the Prevention of Dry Eyes

Magnesium Deficiency Raises Your Risk of Many Chronic Ailments

Resveratrol supplementation improves arterial stiffness in type 2 diabetics

CoQ10's Potential Capabilities for Your Health

How Can Melatonin Benefit You?

Cloves: Boost Your Immune System the Sweet and Spicy Way

8 Chia Seed Recipes

Testosterone replacement therapy associated with improved urinary, sexual function

 
Print Page
Email Article

New Study Shows Tea (L-Theanine) Boosts the Body's Defenses

  [ 867 votes ]   [ Discuss This Article ]
www.ProHealth.com • April 23, 2003


A new study finds that tea boosts the body's defenses against infection and contains a substance that might be turned into a drug to protect against disease, researchers say. Coffee does not have the same effect, they say.

A component in tea was found in laboratory experiments to prime the immune system to attack invading bacteria, viruses and fungi, according to a study in the Proceedings of the National Academy of Sciences released Monday.

A second experiment, using human volunteers, showed that immune system blood cells from tea drinkers responded five times faster to germs than did the blood cells of coffee drinkers.

"We worked out the molecular aspects of this tea component in the test tube and then tested it on a small number of people to see if it actually worked in human beings," said Dr. Jack F. Bukowski, a researcher at Brigham and Women's Hospital in Boston and Harvard Medical School. The results, he said, gave clear proof that five cups of tea a day sharpened the body's disease defenses.

Penny Kris-Etherton, a nutrition specialist at Penn State University, a nutrition expert, said Bukowski's study adds to a growing body of evidence that tea is an effective disease fighter.

"This is potentially a very significant finding," she said. "We're seeing multiple benefits from tea."

But she said the work needs to be confirmed in a much larger study, involving more people.

In the study, Bukowski and his co-authors isolated from ordinary black tea a substance called L-theanine.

Bukowski said L-theanine is broken down in the liver to ethylamine, a molecule that primes the response of an immune system element called the gamma-delta T cell.

"We know from other studies that these gamma-delta T cells in the blood are the first line of defense against many types of bacteria, viral, fungal and parasitic infections," he said. "They even have some anti-tumor activity."

The T cells prompt the secretion of interferon, a key part of the body's chemical defense against infection, Bukowski said.

"We know from mouse studies that if you boost this part of the immune system it can protect against infection," he said.

To further test the finding, the researchers had 11 volunteers drink five cups a day of tea, and 10 others drink coffee. Before the test began, they drew blood samples from all 21 test subjects.

After four weeks, they took more blood from the tea drinkers and then exposed that blood to the bacteria called E-coli. Bukowski said the immune cells in the specimens secreted five times more interferon than did blood cells from the same subjects before the weeks of tea drinking. Blood tests and bacteria challenges showed there was no change in the interferon levels of the coffee drinkers, he said.

Bukowski said it may be possible to further isolate and refine L-theanine from tea and use that as a drug to boost the infection defense of the body.

The health effects of tea have been extensively studied. It has been linked to lower heart disease and cancer risk through the action of flavonoids, a type of antioxidant. Other studies have linked tea to helping combat osteoporosis, the brittle bone disease, and to relieving some allergy symptoms.


Proceedings of the National Academy of Sciences: www.pnas.org



Post a Comment

Featured Products From the ProHealth Store
Ultra EPA  - Fish Oil Vitamin D3 Extreme™ Mitochondria Ignite™ with NT Factor®


Article Comments



Be the first to comment on this article!

Post a Comment


 
Optimized Curcumin Longvida with Omega-3

Featured Products

Energy NADH™ 12.5mg Energy NADH™ 12.5mg
Improve Energy & Cognitive Function
FibroSleep™ FibroSleep™
The All-in-One Natural Sleep Aid
Vitamin D3 Extreme™ Vitamin D3 Extreme™
50,000 IU Vitamin D3 - Prescription Strength
Mitochondria Ignite™ with NT Factor® Mitochondria Ignite™ with NT Factor®
Reduce Fatigue up to 45%
Optimized Curcumin Longvida® Optimized Curcumin Longvida®
Supports Cognition, Memory & Overall Health

Natural Remedies

Top 3 Nutrients to Detox the Liver and Soothe Digestion Top 3 Nutrients to Detox the Liver and Soothe Digestion
Pioneer Scientists Uncover a Revolutionary Neuroprotective Supplement for Nerve Health Pioneer Scientists Uncover a Revolutionary Neuroprotective Supplement for Nerve Health
Looking for Energy? Turn to Plants. Looking for Energy? Turn to Plants.
Coenzyme Q10 - The Energy Maker Coenzyme Q10 - The Energy Maker
Cell-Charging Compound Gives Steady Energy to Fibromyalgia & Chronic Fatigue Patients Cell-Charging Compound Gives Steady Energy to Fibromyalgia & Chronic Fatigue Patients

CONTACT US
ProHealth, Inc.
555 Maple Ave
Carpinteria, CA 93013
(800) 366-6056  |  Email

· Become a Wholesaler
· Vendor Inquiries
· Affiliate Program
SHOP WITH CONFIDENCE
Credit Card Processing
SUBSCRIBE TO OUR NEWSLETTERS
Get the latest news about Fibromyalgia, M.E/Chronic Fatigue Syndrome, Lyme Disease and Natural Wellness

CONNECT WITH US ProHealth on Facebook  ProHealth on Twitter  ProHealth on Pinterest  ProHealth on Google Plus

© 2017 ProHealth, Inc. All rights reserved. Pain Tracker App  |  Store  |  Customer Service  |  Guarantee  |  Privacy  |  Contact Us  |  Library  |  RSS  |  Site Map