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Health Research

9 Proven Health Benefits of Green Tea

Green tea is good for your health - we've all heard that from somewhere before. But what has actually been scientifically proven? We've pored over the academic journals and research papers to come up with this list of 9 proven benefits of green tea. Take a look at our compilation - you might be surprised by what’s on the list!
Why is green tea different from other teas?
Green tea is tea that is almost in its purest form. It usually has light, uncomplicated flavors and sweet aromas. The unique manufacturing process for green tea (take a look at our infographic) results in a much higher concentration of polyphenols and antioxidants than other tea types. This includes the catechin known as epigallocatechin gallate (EGCG) which is said to be responsible for many of the benefits of green tea.
10 proven benefits of green tea
1. Helps delay the aging process
Scientists have found that indicate drinking green tea could actually delay the aging process. Green tea is a rich source of antioxidants and polyphenols, in particular chlorogenic acid (CGA), a chemical that is thought to be responsible for prolonging life.
According to the University of Maryland Medical Center, free radicals contribute to the aging process, as well as the development of a number of health problems, including cancer and heart disease. Antioxidants found in green tea help neutralize free radicals and may reduce or even help prevent some of the damage they cause. What this all means is, green tea will help keep your body from aging and fight against age-related diseases.
2. Increases bone density and support healthy joints
Population research suggests that consuming green tea helps support healthy bones and joints. Tea leaves contain fluoride, which may slow osteoporosis, and flavonoids and phytoestrogens, which may increase bone mineral density. In addition, tea polyphenols and tannins may inhibit bone resorption and affect mineral metabolism.
Tea polyphenols may also improve muscle strength and lessen joint degeneration, based on results from various scientific studies. EGCG and other tea catechins is believed to reduce inflammation and protect cartilage by inhibiting collagen breakdown.
3. Improves mental functioning and memory
Research indicates that EGCG and the amino acid L-theanine found in green tea may help improve memory and learning. Research published in Molecular Nutrition & Food Research found that catechins in green tea could increase brain cell production, resulting in improved cognitive function.
The caffeine found in green tea also lends a hand in increasing alertness, cognitive capacity, and memory function. L-theanine, which is not found in coffee, has a calming effect that minimizes the effects of caffeine from tea. In other words, with green tea, you won’t experience the same caffeine crash as you would from drinking coffee.
4. Increases muscle strength, endurance and fitness
One clinical study indicated that daily consumption of green tea may increase muscle strength, physical endurance, and athletic performance due to the presence of caffeine. Other studies have shown that taking caffeine can decrease subjective feelings of exertion during exercise, improve performance, and cause small increases in the amount of physical work done. These studies were focused on various athletes, including cyclists, runners, soccer players, and golfers. While more research is required to further investigate its benefits, green tea has shown considerable therapeutic potential.
5. Promotes heart health, lowers bad cholesterol and controls blood sugar levels
Regular consumption of green tea has been shown to support cardiovascular health and lower bad cholesterol levels. According to a population study published in the Journal of the American Medical Association, drinking green tea was found to reduce the risk of cardiovascular complications and death. Some researchers estimate that the rate of heart attack decreases by 11% with consumption of 3 cups of tea per day.
Tea may also help control blood sugar levels. Several studies suggest that tea may help prevent the development of type 1 diabetes and slow the progression once it has developed, while regular consumption of tea may help manage type 2 diabetes.
6. Its rich in antioxidants and boosts immune function
Tea contains catechins, tannins, antioxidants, and polyphenols which have demonstrated antioxidant and anti-inflammatory effects that could help boost the immune system and prevent the onset of various diseases.
A number of studies have suggested that tea may help protect against or slow the growth of certain cancers. Researchers believe this anti-cancer effect may be due to the presence of tea polyphenols and EGCG. According to the National Cancer Institute, the polyphenols in tea have been shown in several studies to decrease tumor growth.
7. Helps alleviate stress and depression
According to the American Journal of Clinical Nutrition, those who drank five or more cups of green tea daily were much less likely to suffer from stress than those who drank one cup or less a day. In another population study, adults who consumed four or more cups of tea daily had a 44% to 51% lower prevalence of mild and severe or severe depression.
8. Helps suppress appetite and weight gain
Tea contains only 1 to 2 calories per cup but contains numerous constituents such as caffeine, catechin, theanine, and polyphenols which have demonstrated in scientific studies to increase fat metabolism, increase energy expenditure, inhibit fat digestion, and/or suppress appetite.
According to a study cited in the British Journal of Nutrition, green tea catechins may help increase metabolic function and decrease body weight.
9. Lower risk of breast cancer and ovarian cancer
Women who regularly consume green tea appear to have a significantly lower risk of developing breast cancer and ovarian cancer compared to women who never or rarely consume tea. In one population study, researchers concluded that women who drink two or more cups of tea daily have a 46% lower risk of ovarian cancer compared to women who do not regularly consume tea.
Our conclusion?
With so many good reasons for drinking green tea, there's no reason not to add it to your daily routine unless you are sensitive to caffeine. Its delicious, can be consumed hot or cold, and it mixes well with other herbs for even more flavor.
Do you drink green tea? Have you tried it as an infusion with other herbs? Let us know in the comments and ask any questions you may have!
 

Disclaimer

The statements on this page are for educational purposes only and have not been evaluated by the Food and Drug Administration. The information is not intended to diagnose, treat, cure, or prevent any disease. Please consult your healthcare practitioner prior to the use of any herbal products, especially if you are pregnant, breastfeeding, or have allergies or medical conditions.
The information has been sourced and extracted from scientific papers, academic journals, research abstracts, and other sources. While Purify Tea makes every effort to present accurate and reliable information on this website, Purify Tea does not endorse, approve, or certify such information, nor does it guarantee the accuracy, completeness, efficiency, timeliness, or correct sequencing of such information. Use of such information is voluntary, and reliance on it should only be undertaken after an independent review of its accuracy, completeness, efficiency, and timeliness. While many traditional or folkloric remedies have a long history of use, modern research has only begun to investigate and substantiate their effectiveness. Research is still ongoing in many areas therefore conclusions are subject to change.

Sources

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Duke J. A. Phytochemical and Ethnobotanical Databases. Natural Agricultural Library. United States Department of Agriculture. Web. June 26, 2016.
“Green Tea.” National Center for Complementary and Integrative Health (NCCIH). U.S. Department of Health & Human Services, April 27, 2016. Web. June 7, 2016.
“Green Tea.” The University of Michigan Health System. University of Michigan, May 23, 2015. Web. June 7, 2016.
“Green tea.” University of Maryland Medical System. University of Maryland School of Medicine, March 25, 2015. Web. July 23, 2016.
Heiss, Mary and Heiss Robert. The Tea Enthusiast’s Handbook. New York, NY: Ten Speed Press, 2010. Print.
Kane, Charles W. Herbal Medicine: Trends and Traditions. New York, NY: Lincoln Town Press, 2009. Print.
“Tea and Cancer Prevention.” National Cancer Institute. U.S. Department of Health & Human Services, June 10, 2015. Web. June 7, 2016.
Natural Medicines Comprehensive Database Consumer Version. Therapeutic Research Center. Web. June 22, 2016.
Overman, Stephenie. “Green Tea May Improve Cognitive Functions for People with Down Syndrome.” World Tea News, June 27, 2016. Web. July 21, 2016.
“Safety and efficacy of cognitive training plus epigallocatechin-3-gallate in young adults with Down's syndrome (TESDAD): a double-blind, randomised, placebo-controlled, phase 2 trial. ” The Lancet Neurology, July 2016. Web, July 21, 2016.
Shan-Qing Zheng, Xiao-Bing Huang, Ti-Kun Xing, Ai-June Ding, Gui-Sheng Wu, Huai-Rong Luo.
“Chlorogenic Acid Extends the Lifespan of Caenorhabditis elegans via Insulin/IGF-1 Signaling Pathway.” The Journals of Gerontology. The Gerontological Society of America. May 16, 2016.
United States Department of Agriculture Agricultural Research Service, Beltsville Area Germplasm Resources Information Network (GRIN). November 28, 2015, Web. June 26, 2016.
Zhang, Yifang, and Yingzhi Yao. Your Guide to Health with Foods & Herbs: Using the Wisdom of Traditional Chinese Medicine. New York, NY: Better Link, 2012. Print.
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One response to “9 Proven Health Benefits of Green Tea”

  1. Josephine S. says:

    Thanks for the informative article. I drink green tea almost every day and didn’t even know all of these benefits.

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