Health benefits of green tea -
Given these conflicting results, more research is needed before scientists can recommend green tea for the prevention of esophageal cancer. Lung cancer. While green tea polyphenols have been shown to inhibit the growth of human lung cancer cells in test tubes, few clinical studies have looked at the link between drinking green tea and lung cancer in people, and the studies that have been done show conflicting results.
One population-based study found that Okinawan tea, similar to green tea but partially fermented, was associated with lower lung cancer risk, particularly among women.
But a second study found that green tea and black tea increased the risk of lung cancer. More studies are needed before researchers can draw any conclusions about green tea and lung cancer.
Green tea should not be used by patients on bortezomib therapy. Pancreatic cancer. In one large-scale clinical study researchers compared green tea drinkers with nondrinkers and found that those who drank the most tea were less likely to develop pancreatic cancer.
This was particularly true for women, those who drank the most green tea were half as likely to develop pancreatic cancer as those who drank less tea. However, it is not clear from this population-based study whether green tea is solely responsible for lowering pancreatic cancer risk.
More studies are needed before researchers can recommend green tea for the prevention of pancreatic cancer.
Prostate cancer. Laboratory studies have found that green tea extracts prevent the growth of prostate cancer cells in test tubes.
A large clinical study in Southeast China found that the risk of prostate cancer went down with increasing frequency, duration, and quantity of green tea consumption.
However, both green and black tea extracts also stimulated genes that cause cells to be less sensitive to chemotherapy drugs. People who are undergoing chemotherapy should ask their doctors before drinking green or black tea, or taking tea supplements.
Skin cancer. The main polyphenol in green tea is epigallocatechin gallate EGCG. Scientific studies suggest that EGCG and green tea polyphenols have anti-inflammatory and anticancer properties that may help prevent the development and growth of skin tumors.
Stomach cancer. Laboratory studies have found that green tea polyphenols inhibit the growth of stomach cancer cells in test tubes, however, studies in people have been less conclusive. In two studies that compared green tea drinkers with nondrinkers, researchers found that people who drank tea were about half as likely to develop stomach cancer and stomach inflammation as those who did not drink green tea.
However, a clinical study with more than 26, men and women in Japan found no association between green tea and stomach cancer risk. Some studies even suggest that green tea may increase the risk of stomach cancer. Green tea may help reduce inflammation associated with Crohn disease and ulcerative colitis, the two types of IBD.
If green tea proves to help prevent colon cancer, it would also help those with IBD because they are at higher risk for colon cancer.
Green tea has been used traditionally to control blood sugar levels. Animal studies suggest that green tea may help prevent the development of type 1 diabetes and slow the progression once it has developed.
In people with type 1 diabetes, their bodies make little or no insulin, which helps convert glucose or sugar into energy. Green tea may help regulate glucose in the body. Research also suggests that regular consumption of green tea may help manage type 2 diabetes.
Population-based studies have shown that men who drink more than 10 cups of green tea per day are less likely to develop liver problems. Green tea also seems to protect the liver from the damaging effects of toxic substances such as alcohol.
Animal studies have shown that green tea helps protect against liver tumors in mice. Results from several animal and human studies suggest that plant chemicals in green tea called catechins, may help treat viral hepatitis, an inflammation of the liver.
In these studies, catechin was used by itself in very high amounts. It is not clear whether green tea, which has a lower concentration of catechins, would have the same benefits.
It is important to note that 10 cups of green tea a day could cause problems due to high levels of caffeine.
Ask your doctor about the best way to include green tea in your treatment. Clinical studies suggest that green tea extract may boost metabolism and help burn fat.
One study found that the combination of green tea and caffeine improved weight loss and maintenance in people who were overweight and moderately obese. However, other studies show no benefit.
Preliminary studies suggest that drinking green tea can help prevent dental cavities. More research is needed. Green tea may also be useful in inflammatory diseases, such as arthritis. Research suggests that green tea may help arthritis by reducing inflammation and slowing the breakdown of cartilage.
Chemicals in green tea may help treat genital warts, treat dermatologic conditions, and prevent symptoms of colds and flu. Green tea may play a role in preventing Parkinson disease, cognitive decline, and osteoporosis.
Studies also show that drinking green tea is associated with reduced risk of dying from any cause. Green, black, and oolong tea are all derived from the leaves of the Camellia sinensis plant. Originally cultivated in East Asia, this plant grows as large as a shrub or tree. Today, Camellia sinensis grows throughout Asia and parts of the Middle East and Africa.
People in Asian countries more commonly consume green and oolong tea while black tea is most popular in the United States.
Green tea is prepared from unfermented leaves, the leaves of oolong tea are partially fermented, and black tea is fully fermented. The more the leaves are fermented, the lower the polyphenol content and the higher the caffeine content. Green tea has the highest polyphenol content while black tea has roughly 2 to 3 times the caffeine content of green tea.
Researchers think the health properties of green tea are mostly due to polyphenols, chemicals with potent antioxidant potential. In fact, the antioxidant effects of polyphenols seem to be greater than vitamin C. The polyphenols in green tea also give it a somewhat bitter flavor.
Polyphenols contained in teas are classified as catechins. Green tea contains six primary catechin compounds: catechin, gallaogatechin, epicatechin, epigallocatechin, epicatechin gallate, and apigallocatechin gallate also known as EGCG. EGCG is the most studied polyphenol component in green tea and the most active.
Green tea also contains alkaloids including caffeine, theobromine, and theophylline. They provide green tea's stimulant effects. L-theanine, an amino acid compound found in green tea, has been studied for its calming effects on the nervous system.
Most green tea dietary supplements are sold as dried leaf tea in capsule form. Look for standardized extracts of green tea. There are also liquid extracts made from the leaves and leaf buds. The average cup of green tea contains 50 to mg polyphenols antioxidants.
Decaffeinated green tea products contain concentrated polyphenols. Caffeine-free supplements are available. Depending on the brand, 2 to 3 cups of green tea per day for a total of to mg polyphenols or to mg per day of standardized green tea extract is recommended.
Caffeine-free products are available and recommended. The use of herbs is a time-honored approach to strengthening the body and treating disease. However, herbs contain active substances that can trigger side effects and interact with other herbs, supplements, or medications. For these reasons, people should take herbs with care, under the supervision of a practitioner knowledgeable in the field of botanical medicine.
People with heart problems or high blood pressure, kidney problems, liver problems, stomach ulcers, and psychological disorders, particularly anxiety, should not take green tea. Pregnant and breastfeeding women should also avoid green tea.
People with anemia, diabetes, glaucoma, or osteoporosis should ask their health care provider before drinking green tea or taking an extract. People who drink large amounts of caffeine, including caffeine from green tea, for long periods of time may experience irritability, insomnia, heart palpitations, and dizziness.
Caffeine overdose can cause nausea, vomiting, diarrhea, headaches, and loss of appetite. If you are drinking a lot of tea and start to vomit or have abdominal spasms, you may have caffeine poisoning.
If your symptoms are severe, lower your caffeine intake and see your health care provider. If you are being treated with any of the following medications, you should not drink green tea or take green tea extract without first talking to your health care provider:.
Green tea may inhibit the actions of adenosine, a medication given in the hospital for an irregular and usually unstable heart rhythm. Green tea may increase the effectiveness of beta-lactam antibiotics by making bacteria less resistant to treatment.
Caffeine, including caffeine from green tea, may reduce the sedative effects of these medications commonly used to treat anxiety, such as diazepam Valium and lorazepam Ativan. Beta-blockers, Propranolol, and Metoprolol. Caffeine, including caffeine from green tea, may increase blood pressure in people taking propranolol Inderal and metoprolol Lopressor, Toprol XL.
These medications are used to treat high blood pressure and heart disease. Blood-Thinning Medications. People who take warfarin Coudamin should not drink green tea. Since green tea contains vitamin K, it can make this medication ineffective. Other compounds in green tea may slow blood clotting and therefore increase the blood-thinning effect of these medications.
You should not mix green tea and aspirin because they both prevent blood from clotting. Using the two together may increase your risk of bleeding. If you are taking medications that promote blood thinning, discuss green tea consumption with your physician.
The combination of green tea and chemotherapy medications, specifically doxorubicin and tamoxifen, increased the effectiveness of these medications in laboratory tests. However, the same results have not been found in studies on people. On the other hand, there have been reports of both green and black tea extracts affecting a gene in prostate cancer cells that may make them less sensitive to chemotherapy drugs.
For that reason, people should talk to their doctors before drinking black and green tea or taking tea extracts while undergoing chemotherapy. Clozapine Clozaril. The effects of the clozapine may be reduced if taken within 40 minutes after drinking green tea.
When taken with ephedrine, green tea may cause agitation, tremors, insomnia, and weight loss. Green tea has been shown to reduce blood levels of lithium, a medication used to treat bipolar disorder.
That can make lithium less effective. Monoamine Oxidase Inhibitors MAOIs. Green tea may cause a severe increase in blood pressure, called a "hypertensive crisis," when taken together with these drugs used to treat depression. Examples of MAOIs include:.
Birth control pills. Oral contraceptives can prolong the amount of time caffeine stays in the body, which may increase its stimulating effects.
A combination of caffeine, including caffeine from green tea, and phenylpropanolamine, used in many over-the-counter and prescription cough and cold medications and weight loss products, may cause mania and a severe increase in blood pressure.
The FDA issued a public health advisory in November to warn people of the risk of bleeding in the brain from use of this medication and urged all manufacturers of this drug to remove it from the market.
Most drugs that contained phenylpropanolamine have been reformulated without it. Quinolone antibiotics. Green tea may make these medications more effective and also increase the risk of side effects. These medications include:.
Other medications. Green tea, especially caffeinated green tea, may interact with a number for medications, including:. To be safe, check with your health care provider before drinking or taking green tea if you also take other medications. Baladia E, Basulto J, Manera M, Martinez R, Calbet D.
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March 19, Caffeine Content for Coffee, Tea, Soda and More. April 26, Kim HR et al. Green Tea Protects Rats Against Autoimmune Arthritis by Modulating Disease-Related Immune Events. The Journal of Nutrition. November Katiyar SK et al. Green Tea: A New Option for the Prevention or Control of Osteoarthritis.
August 10, Green Tea Polyphenols Prevent UV-Induced Immunosuppression by Rapid Repair of DNA Damage and Enhancement of Nucleotide Excision Repair Genes. Cancer Preservation Research.
Zink A et al. Green Tea in Dermatology — Myths and Facts. Journal of the German Society of Dermatology. August Diabetes Complications. American Diabetes Association. Mozaffari-Khosravi H et al. The Effect of Green Tea Versus Sour Tea on Insulin Resistance, Lipids Profiles and Oxidative Stress in Patients With Type 2 Diabetes Mellitus: A Randomized Clinical Trial.
Iranian Journal of Medical Sciences. September Mancini E et al. Green Tea Effects on Cognition, Mood and Human Brain Function: A Systematic Review.
October 15, Tea and Cancer Prevention. National Cancer Institute. November 17, Fujiki H et al. Cancer Prevention With Green Tea and Its Principal Constituent, EGCG: From Early Investigations to Current Focus on Human Cancer Stem Cells.
Molecules and Cells. February 28, Zhao Y et al. The Association Between Tea Consumption and Blood Pressure in the Adult Population in Southwest China.
Especially green tea gree the second most Hydrating makeup primers type ebnefits tea that people drink [ Health benefits of green tea ]. Green tea can trace its history all the way benefigs to the Beefits Dynasty of China, when people drank tez for medicinal Health benefits of green tea. They would use it to reduce inflammation, aid digestion, or heal wounds. There was even a book released by scholar Lu Yu about the art of drinking green tea, while the Chinese nobility developed a ritualistic preparation: the tea ceremony [ 2 ]. But what makes green tea so good for our physical and mental well-being? Green tea or unoxidized tea is made from the leaves of Camellia sinensis, the tea plant. There are different types of green tea, such as Chinese gunpowder tea or Japanese matcha.Health benefits of green tea -
Green Tea Catechins Attenuate Neurodegenerative Diseases and Cognitive Deficits. Some research suggests that green tea may help keep blood sugar levels steady. In short-term studies, drinking green tea helped decrease fasting blood sugar levels [8] Xu R, et al.
Effects of Green Tea Consumption on Glycemic Control: A Systematic Review and Meta-Analysis of Randomized Controlled Trials.
Nutr Metab Lond. Still, more studies are needed, as other research has found that green tea has no effect on long-term blood sugar control or insulin levels [9] Yu J, et al. The Effectiveness of Green Tea or Green Tea Extract on Insulin Resistance and Glycemic Control in Type 2 Diabetes Mellitus: A Meta-Analysis.
Diabetes Metab J. Available in Original and Berry flavors, it's vegan, gluten-free, and free of sugar and sweeteners. Schleiger recommends enjoying green tea in moderation to maximize the potential health benefits.
Around two to three cups per day is a reasonable amount for most people, according to Schleiger. However, there are several instances where you might need to cut back on your consumption.
For starters, green tea contains caffeine , which some people might need to limit or avoid. Each cup contains around 30 to 40 milligrams, though the exact caffeine content varies depending on the specific type and brewing method. According to the Food and Drug Administration FDA , consuming up to milligrams per day of caffeine is safe for most adults, but high amounts can cause side effects like dizziness, anxiety, fast heart rate and dehydration.
If you have a history of digestive issues, she recommends monitoring your tolerance, moderating your intake and drinking green tea after meals rather than on an empty stomach. Green tea could also interact with certain medications, according to Schleiger. Due to its many potential benefits, as well as the fact that simply drinking it can help you stay refreshed and hydrated, green tea can be a helpful addition to almost any diet.
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Rachael Link is a registered dietitian and health writer based in San Francisco. She enjoys balancing her time between the kitchen and the gym and is passionate about all things related to food, sustainability and plant-based nutrition. Jackie Newgent, R. Newgent is a culinary nutrition advisor to national food brands and a private plant-based cooking coach.
She has made guest appearances on dozens of television news shows, including Good Morning America. Formerly, Newgent was a national media spokesperson for the Academy of Nutrition and Dietetics and healthy culinary instructor at the Institute of Culinary Education.
You can find her plant-based recipes on her blog and social media. Select Region. United States. United Kingdom. Health Nutrition. Advertiser Disclosure. By Rachael Ajmera. Expert Reviewed Jackie Newgent is a registered dietitian nutritionist and former national media spokesperson for the Academy of Nutrition and Dietetics.
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Medically Reviewed. Reyna Franco, MS, RDN of American College of Lifestyle Medicine. The antioxidants in green tea contain a bounty of possible perks.
Editorial Sources and Fact-Checking. Resources Green Tea. National Center for Complementary and Integrative Health. October Dulloo AG et al. Green Tea and Thermogenesis: Interactions Between Catechin-Polyphenols, Caffeine and Sympathetic Activity.
International Journal of Obesity and Related Metabolic Disorders. February Jurgens T et al. Can Green Tea Preparations Help With Weight Loss? Canadian Pharmacists Journal. May Should I Cut Back on Coffee? Mayo Clinic. March 19, Caffeine Content for Coffee, Tea, Soda and More.
April 26, Kim HR et al. Green Tea Protects Rats Against Autoimmune Arthritis by Modulating Disease-Related Immune Events. The Journal of Nutrition. November Katiyar SK et al. Green Tea: A New Option for the Prevention or Control of Osteoarthritis.
August 10, Green Tea Polyphenols Prevent UV-Induced Immunosuppression by Rapid Repair of DNA Damage and Enhancement of Nucleotide Excision Repair Genes. Cancer Preservation Research. They also haven't been shown to help people maintain a weight loss.
Cochrane Database of Systematic Reviews. Part 2 of 5 series". Food Chem Toxicol Review. Cochrane Database Syst Rev Systematic review. Retrieved 10 November Cancer Biol Med Review. Br J Nutr Meta-analysis. Eur J Epidemiology Systematic Review and Meta-Analysis.
S2CID European Journal of Clinical Nutrition Review. Br J Nutr Meta-Analysis. Eur J Nutr Systematic Review and Meta-Analysis. Circulation Review. Stroke Review. Am J Clin Nutr Meta-Analysis.
LiverTox: Clinical and Research Information on Drug-Induced Liver Injury. National Institutes of Health. Green tea extract and, more rarely, ingestion of large amounts of green tea have been implicated in cases of clinically apparent acute liver injury, including instances of acute liver failure and either need for urgent liver transplantation or death.
Archives of Toxicology. J Hepatol. Rome, Italy: FAO Intergovernmental Group on Tea, Food and Agriculture Organization, United Nations. Retrieved 15 November World News, The Telegraph. Archived from the original on 27 February Retrieved US Food and Drug Administration.
Retrieved 13 April National Bureau of Statistics of China. Translated by Anthony, Brother Anthony of Taizé ; Hong, Kyeong-hee; Owyoung, Steven D. Seoul: Seoul Selection. Translated by Brother Anthony of Taizé ; Hong, Kyeong-hee; Owyoung, Steven D.
Cha saenghwal munhwa daejeon 차생활문화대전 in Korean. Seoul: Hong Ik Jae. ISBN — via Naver. The Korean way of tea: an introductory guide.
佐賀大学農学部彙報 in Japanese. Archived from the original PDF on FAO Corporate Statistical Database. Food and Agriculture Organization of the United Nations. Retrieved 8 April Segye Ilbo in Korean. Sisa on in Korean. Maeil Business Newspaper in Korean. The Korean Way of Tea: An Introductory Guide.
Modern Tea: A Fresh Look at an Ancient Beverage 차 상식사전 in Korean. Translated by 공, 민희. Seoul: Gilbut Publishing. The Korea Herald. Retrieved 20 March Pictorial Korea. Korean Overseas Culture and Information Service. OCLC Standard Korean Language Dictionary.
National Institute of Korean Language. Archived from the original on 20 March Global Tea Championship. 차생활문화대전 in Korean. Retrieved 20 March — via Naver.
Korea Tourism Organization. Archived from the original on 25 February Ch'oŭi Ŭisun: A Liberal Sŏn Master and an Engaged Artist in Late Chosŏn Korea.
Fremont, CA: Jain Publishing. Battle, Will The World Tea Encyclopaedia: The World of Tea Explored and Explained from Bush to Brew. Market Harborough, UK: Troubador. Benn, James A. Tea in China: A Religious and Cultural History.
Hong Kong: Hong Kong University Press. Chow, Kit Boey; Kramer, Ione All the Tea in China. San Francisco: China Books. Farris, William Wayne A Bowl for a Coin: A Commodity History of Japanese Tea.
Honolulu: University of Hawaii Press. Heiss, Mary Lou; Heiss, Robert J. The Story of Tea: A Cultural History and Drinking Guide. Berkeley: Ten Speed Press.
The antioxidants BCAA and muscle protein balance green tea may offer benefits, such as benffits your bone, brain, Hewlth heart health. Green tea, Healtu source of antioxidants Brain health promotion caffeine, hea several possible benefits. Research has found bfnefits the health Heath of green Health benefits of green tea may include alleviating anxiety and stress, enhancing memory, and reducing high blood pressure and cholesterol. There are several types of green tea, including beverages, dietary supplements, and even topical ointments. Keep reading to learn about green tea's possible benefits, risks, and tips for incorporating it into your diet. Tea contains an amino acid called L-theanine, which alleviates anxiety and stresshelping you relax. Green tea has one of the highest concentrations of L-theanine compared to black, oolong, and white tea. Green tea may help support Healtb, maintenance of moderate weight, and offer some protection greenn cancer. Green tea is touted to Geen one of Health benefits of green tea healthiest beverages Achieving body recomposition at any age the planet that could have many potential health benefits. Green tea contains a type of polyphenol called a catechin. Catechins are antioxidants that help prevent cell damage and provide other health benefits. The most well-known and abundant catechin in green tea is epigallocatechingallate EGCGwhich research has found may be involved in improving various health conditions or markers of disease.
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