Table of ContentsView AllTable of ContentsGreen Tea and CaffeineWhen to Drink ItBenefits of Decaf Green TeaInfusion Time
Table of ContentsView All
View All
Table of Contents
Green Tea and Caffeine
When to Drink It
Benefits of Decaf Green Tea
Infusion Time
Green tea is a popular type of tea made from the unoxidized leaves of theCamellia sinensisbush. It is less processed than other teas and is rich inantioxidants.
It naturally containscaffeineand is also available in a decaffeinated version. Green tea contains less caffeine than coffee and other caffeinated drinks.
Green teahas several possible health benefits, including improved brain function and a lower risk of several chronic health conditions.
Green Tea Has Caffeine: What to Know
Green tea containscaffeine, and the amount depends on the type of green tea. The average cup of green tea contains 3 calories and about 29 milligrams of caffeine.
Caffeine has been linked with improved alertness and mood.It may also boost brain function, metabolism health, and exercise performance.
Green Tea FormsGreen tea is available in many forms, including:BottledCapsule supplementsInstant powderLoose leafSingle tea bagsSweetened
Green Tea Forms
Green tea is available in many forms, including:BottledCapsule supplementsInstant powderLoose leafSingle tea bagsSweetened
Green tea is available in many forms, including:
Compared to Coffee
Green tea contains considerably less caffeine thancoffee. An 8-ounce cup of brewed coffee contains about 133 milligrams (mg) of caffeine, while an 8-ounce cup of green tea contains 29 mg of caffeine. Espresso is high in caffeine and contains about 320 mg per serving.
A Word From VerywellGreen tea has less caffeine than the average cup of Joe. It can also pack a health punch while still delivering energy boosts.—AVIV JOSHUA, MS, MEDICAL EXPERT BOARD
A Word From Verywell
Green tea has less caffeine than the average cup of Joe. It can also pack a health punch while still delivering energy boosts.—AVIV JOSHUA, MS, MEDICAL EXPERT BOARD
Green tea has less caffeine than the average cup of Joe. It can also pack a health punch while still delivering energy boosts.
—AVIV JOSHUA, MS, MEDICAL EXPERT BOARD
Compared to Other Teas
Green tea contains less caffeine than black tea. An 8-ounce cup of black tea contains 47 mg of caffeine.While green tea contains less caffeine, it may have a similar effect on alertness thanks to the amino acidL-theanine. This amino acid works with caffeine to improve alertness without the potential side effects like shakiness.
Other popular caffeinated drinks include soft drinks (23 to 27 mg of caffeine) andenergy drinks(72 to 80 mg).
What Is Matcha?Matchais a powdered green tea with a higher caffeine content than other forms. It is also more concentrated than loose-leaf or bagged green teas.
What Is Matcha?
Matchais a powdered green tea with a higher caffeine content than other forms. It is also more concentrated than loose-leaf or bagged green teas.
When to Drink Caffeinated Green Tea
There is no better time of day than any other to drink caffeinated green tea, but if you are more sensitive to caffeine’s effects, plan to drink it in the morning. Avoid drinking caffeinated tea in the afternoon or evening to prevent potential sleep problems.
Some people experience side effects of caffeine, including:
The recommended limit for most adults is 400 mg of caffeine per day. However, most healthcare providers advise people to limit their caffeine intake to 200 mg per day.
Green tea has several possible health benefits. Drinking green tea regularly has been linked with lower rates of cancer, heart disease, andAlzheimer’s disease.Green tea may also boost weight loss efforts.
Data are inconsistent, and the topic requires more research, but green tea may protect against the following types of cancer:
Green tea’s high antioxidant content may have a protective effect against cancer. Green tea may also protect against the following chronic health conditions:
Infusion Time for Caffeinated Green Tea
Tea infusion time affects its caffeine content. This means that the longer you brew bagged or loose-leaf tea, the more concentrated your cup will be and the more caffeine it will contain.
Brewing green tea for a longer time will provide more caffeine. The caffeine content also goes up as the water temperature increases.Some research shows green tea made with older leaves contains less caffeine than teas made with fresh leaves.
It is important to note that drinking too much green tea is possible. Consuming large amounts of highly concentrated green tea has been linked toliver damage. It is safe for most healthy adults to drink up to eight cups of unsweetened green tea daily.
Summary
Green tea is a popular tea that naturally contains caffeine, a chemical in many plants, beans, and fruits. Caffeine boosts alertness and fights feelings of fatigue. Green tea is rich in antioxidants and linked with several possible health benefits, including improved brain health and weight loss. It may also protect against certain forms of cancer and heart disease.
Green tea contains less caffeine than coffee and other teas. One 8-ounce cup of green tea contains about 29 milligrams of caffeine. An 8-ounce cup of coffee has 95 milligrams of caffeine. If you are sensitive to the effects of caffeine, plan to drink green tea in the morning to avoid sleep issues.
24 SourcesVerywell Health uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read oureditorial processto learn more about how we fact-check and keep our content accurate, reliable, and trustworthy.Heckman MA, Weil J, Gonzalez de Mejia E.Caffeine (1, 3, 7-trimethylxanthine) in foods: a comprehensive review on consumption, functionality, safety, and regulatory matters.J Food Sci. 2010;75(3):R77-R87. doi:10.1111/j.1750-3841.2010.01561.xKurosaka C, Tagata C, Nakagawa S, Kobayashi M, Miyake S.Effects of green tea and roasted green tea on human responses.Sci Rep. 2024;14(1):8588. doi:10.1038/s41598-024-59383-yTomata Y, Sugiyama K, Kaiho Y, et al.Green tea consumption and the risk of incident dementia in elderly Japanese: The Ohsaki Cohort 2006 study.Am J Geriatr Psychiatry. 2016;24(10):881-889. doi:10.1016/j.jagp.2016.07.009Huxley R, Lee CM, Barzi F, et al.Coffee, decaffeinated coffee, and tea consumption in relation to incident type 2 diabetes mellitus: a systematic review with meta-analysis.Arch Intern Med. 2009;169(22):2053-2063. doi:10.1001/archinternmed.2009.439U.S. Department of Agriculture.Beverages, tea, green, brewed, regular.McLellan TM, Caldwell JA, Lieberman HR.A review of caffeine’s effects on cognitive, physical and occupational performance.Neurosci Biobehav Rev. 2016;71:294-312. doi:10.1016/j.neubiorev.2016.09.001Kazemzadeh-Narbat M, Annabi N, Tamayol A, Oklu R, Ghanem A, Khademhosseini A.Adenosine-associated delivery systems.J Drug Target. 2015;23(7-8):580-596. doi:10.3109/1061186X.2015.1058803Grosso G, Micek A, Castellano S, Pajak A, Galvano F.Coffee, tea, caffeine and risk of depression: A systematic review and dose-response meta-analysis of observational studies.Mol Nutr Food Res. 2016;60(1):223-234. doi:10.1002/mnfr.201500620Guest NS, VanDusseldorp TA, Nelson MT, et al.International society of sports nutrition position stand: caffeine and exercise performance.J Int Soc Sports Nutr. 2021;18(1):1. doi:10.1186/s12970-020-00383-4U.S. Department of Agriculture.Beverages, tea, black, brewed, prepared with tap water.Camfield DA, Stough C, Farrimond J, Scholey AB.Acute effects of tea constituents L-theanine, caffeine, and epigallocatechin gallate on cognitive function and mood: a systematic review and meta-analysis.Nutr Rev. 2014;72(8):507-522. doi:10.1111/nure.12120Saimaiti A, Zhou DD, Li J, et al.Dietary sources, health benefits, and risks of caffeine.Crit Rev Food Sci Nutr. 2023;63(29):9648-9666. doi:10.1080/10408398.2022.2074362Yang DJ, Hwang LS, Lin JT.Effects of different steeping methods and storage on caffeine, catechins and gallic acid in bag tea infusions.J Chromatogr A. 2007;1156(1-2):312-320. doi:10.1016/j.chroma.2006.11.088Curran CP, Marczinski CA.Taurine, caffeine, and energy drinks: Reviewing the risks to the adolescent brain.Birth Defects Res. 2017;109(20):1640-1648. doi:10.1002/bdr2.1177Reyes CM, Cornelis MC.Caffeine in the diet: Country-level consumption and guidelines.Nutrients. 2018;10(11):1772. doi:10.3390/nu10111772Kakutani S, Watanabe H, Murayama N.Green tea intake and risks for dementia, Alzheimer’s disease, mild cognitive impairment, and cognitive impairment.Nutrients. 2019;11(5):1165. doi:10.3390/nu11051165Zamani M, Kelishadi MR, Ashtary-Larky D, et al.The effects of green tea supplementation on cardiovascular risk factors: A systematic review and meta-analysis.Front Nutr. 2023;9:1084455. doi:10.3389/fnut.2022.1084455Ohishi T, Fukutomi R, Shoji Y, Goto S, Isemura M.The beneficial effects of principal polyphenols from green tea, coffee, wine, and curry on obesity.Molecules. 2021;26(2):453. doi:10.3390/molecules26020453Filippini T, Malavolti M, Borrelli F, et al.Green tea (Camellia sinensis) for the prevention of cancer.Cochrane Database Syst Rev. 2020;3(3):CD005004. doi:10.1002/14651858.CD005004.pub3Sharma P, Montes de Oca MK, Alkeswani AR, et al.Tea polyphenols for the prevention of uvb-induced skin cancer.Photodermatol Photoimmunol Photomed. 2018;34(1):50-59. doi:10.1111/phpp.12356Xu R, Yang K, Li S, Dai M, Chen G.Effect of green tea consumption on blood lipids: a systematic review and meta-analysis of randomized controlled trials.Nutr J. 2020;19(1):48. doi:10.1186/s12937-020-00557-5Koch W, Zagórska J, Marzec Z, Kukula-Koch W.Applications of tea (Camellia sinensis) and its active constituents in cosmetics.Molecules. 2019;24(23):4277. doi:10.3390/molecules24234277American Heart Association.Green tea, coffee linked to lower death risk after stroke, heart attack.Lin YS, Tsai YJ, Tsay JS, Lin JK.Factors affecting the levels of tea polyphenols and caffeine in tea leaves.J Agric Food Chem. 2003;51(7):1864-1873. doi:10.1021/jf021066b
24 Sources
Verywell Health uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read oureditorial processto learn more about how we fact-check and keep our content accurate, reliable, and trustworthy.Heckman MA, Weil J, Gonzalez de Mejia E.Caffeine (1, 3, 7-trimethylxanthine) in foods: a comprehensive review on consumption, functionality, safety, and regulatory matters.J Food Sci. 2010;75(3):R77-R87. doi:10.1111/j.1750-3841.2010.01561.xKurosaka C, Tagata C, Nakagawa S, Kobayashi M, Miyake S.Effects of green tea and roasted green tea on human responses.Sci Rep. 2024;14(1):8588. doi:10.1038/s41598-024-59383-yTomata Y, Sugiyama K, Kaiho Y, et al.Green tea consumption and the risk of incident dementia in elderly Japanese: The Ohsaki Cohort 2006 study.Am J Geriatr Psychiatry. 2016;24(10):881-889. doi:10.1016/j.jagp.2016.07.009Huxley R, Lee CM, Barzi F, et al.Coffee, decaffeinated coffee, and tea consumption in relation to incident type 2 diabetes mellitus: a systematic review with meta-analysis.Arch Intern Med. 2009;169(22):2053-2063. doi:10.1001/archinternmed.2009.439U.S. Department of Agriculture.Beverages, tea, green, brewed, regular.McLellan TM, Caldwell JA, Lieberman HR.A review of caffeine’s effects on cognitive, physical and occupational performance.Neurosci Biobehav Rev. 2016;71:294-312. doi:10.1016/j.neubiorev.2016.09.001Kazemzadeh-Narbat M, Annabi N, Tamayol A, Oklu R, Ghanem A, Khademhosseini A.Adenosine-associated delivery systems.J Drug Target. 2015;23(7-8):580-596. doi:10.3109/1061186X.2015.1058803Grosso G, Micek A, Castellano S, Pajak A, Galvano F.Coffee, tea, caffeine and risk of depression: A systematic review and dose-response meta-analysis of observational studies.Mol Nutr Food Res. 2016;60(1):223-234. doi:10.1002/mnfr.201500620Guest NS, VanDusseldorp TA, Nelson MT, et al.International society of sports nutrition position stand: caffeine and exercise performance.J Int Soc Sports Nutr. 2021;18(1):1. doi:10.1186/s12970-020-00383-4U.S. Department of Agriculture.Beverages, tea, black, brewed, prepared with tap water.Camfield DA, Stough C, Farrimond J, Scholey AB.Acute effects of tea constituents L-theanine, caffeine, and epigallocatechin gallate on cognitive function and mood: a systematic review and meta-analysis.Nutr Rev. 2014;72(8):507-522. doi:10.1111/nure.12120Saimaiti A, Zhou DD, Li J, et al.Dietary sources, health benefits, and risks of caffeine.Crit Rev Food Sci Nutr. 2023;63(29):9648-9666. doi:10.1080/10408398.2022.2074362Yang DJ, Hwang LS, Lin JT.Effects of different steeping methods and storage on caffeine, catechins and gallic acid in bag tea infusions.J Chromatogr A. 2007;1156(1-2):312-320. doi:10.1016/j.chroma.2006.11.088Curran CP, Marczinski CA.Taurine, caffeine, and energy drinks: Reviewing the risks to the adolescent brain.Birth Defects Res. 2017;109(20):1640-1648. doi:10.1002/bdr2.1177Reyes CM, Cornelis MC.Caffeine in the diet: Country-level consumption and guidelines.Nutrients. 2018;10(11):1772. doi:10.3390/nu10111772Kakutani S, Watanabe H, Murayama N.Green tea intake and risks for dementia, Alzheimer’s disease, mild cognitive impairment, and cognitive impairment.Nutrients. 2019;11(5):1165. doi:10.3390/nu11051165Zamani M, Kelishadi MR, Ashtary-Larky D, et al.The effects of green tea supplementation on cardiovascular risk factors: A systematic review and meta-analysis.Front Nutr. 2023;9:1084455. doi:10.3389/fnut.2022.1084455Ohishi T, Fukutomi R, Shoji Y, Goto S, Isemura M.The beneficial effects of principal polyphenols from green tea, coffee, wine, and curry on obesity.Molecules. 2021;26(2):453. doi:10.3390/molecules26020453Filippini T, Malavolti M, Borrelli F, et al.Green tea (Camellia sinensis) for the prevention of cancer.Cochrane Database Syst Rev. 2020;3(3):CD005004. doi:10.1002/14651858.CD005004.pub3Sharma P, Montes de Oca MK, Alkeswani AR, et al.Tea polyphenols for the prevention of uvb-induced skin cancer.Photodermatol Photoimmunol Photomed. 2018;34(1):50-59. doi:10.1111/phpp.12356Xu R, Yang K, Li S, Dai M, Chen G.Effect of green tea consumption on blood lipids: a systematic review and meta-analysis of randomized controlled trials.Nutr J. 2020;19(1):48. doi:10.1186/s12937-020-00557-5Koch W, Zagórska J, Marzec Z, Kukula-Koch W.Applications of tea (Camellia sinensis) and its active constituents in cosmetics.Molecules. 2019;24(23):4277. doi:10.3390/molecules24234277American Heart Association.Green tea, coffee linked to lower death risk after stroke, heart attack.Lin YS, Tsai YJ, Tsay JS, Lin JK.Factors affecting the levels of tea polyphenols and caffeine in tea leaves.J Agric Food Chem. 2003;51(7):1864-1873. doi:10.1021/jf021066b
Verywell Health uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read oureditorial processto learn more about how we fact-check and keep our content accurate, reliable, and trustworthy.
Heckman MA, Weil J, Gonzalez de Mejia E.Caffeine (1, 3, 7-trimethylxanthine) in foods: a comprehensive review on consumption, functionality, safety, and regulatory matters.J Food Sci. 2010;75(3):R77-R87. doi:10.1111/j.1750-3841.2010.01561.xKurosaka C, Tagata C, Nakagawa S, Kobayashi M, Miyake S.Effects of green tea and roasted green tea on human responses.Sci Rep. 2024;14(1):8588. doi:10.1038/s41598-024-59383-yTomata Y, Sugiyama K, Kaiho Y, et al.Green tea consumption and the risk of incident dementia in elderly Japanese: The Ohsaki Cohort 2006 study.Am J Geriatr Psychiatry. 2016;24(10):881-889. doi:10.1016/j.jagp.2016.07.009Huxley R, Lee CM, Barzi F, et al.Coffee, decaffeinated coffee, and tea consumption in relation to incident type 2 diabetes mellitus: a systematic review with meta-analysis.Arch Intern Med. 2009;169(22):2053-2063. doi:10.1001/archinternmed.2009.439U.S. Department of Agriculture.Beverages, tea, green, brewed, regular.McLellan TM, Caldwell JA, Lieberman HR.A review of caffeine’s effects on cognitive, physical and occupational performance.Neurosci Biobehav Rev. 2016;71:294-312. doi:10.1016/j.neubiorev.2016.09.001Kazemzadeh-Narbat M, Annabi N, Tamayol A, Oklu R, Ghanem A, Khademhosseini A.Adenosine-associated delivery systems.J Drug Target. 2015;23(7-8):580-596. doi:10.3109/1061186X.2015.1058803Grosso G, Micek A, Castellano S, Pajak A, Galvano F.Coffee, tea, caffeine and risk of depression: A systematic review and dose-response meta-analysis of observational studies.Mol Nutr Food Res. 2016;60(1):223-234. doi:10.1002/mnfr.201500620Guest NS, VanDusseldorp TA, Nelson MT, et al.International society of sports nutrition position stand: caffeine and exercise performance.J Int Soc Sports Nutr. 2021;18(1):1. doi:10.1186/s12970-020-00383-4U.S. Department of Agriculture.Beverages, tea, black, brewed, prepared with tap water.Camfield DA, Stough C, Farrimond J, Scholey AB.Acute effects of tea constituents L-theanine, caffeine, and epigallocatechin gallate on cognitive function and mood: a systematic review and meta-analysis.Nutr Rev. 2014;72(8):507-522. doi:10.1111/nure.12120Saimaiti A, Zhou DD, Li J, et al.Dietary sources, health benefits, and risks of caffeine.Crit Rev Food Sci Nutr. 2023;63(29):9648-9666. doi:10.1080/10408398.2022.2074362Yang DJ, Hwang LS, Lin JT.Effects of different steeping methods and storage on caffeine, catechins and gallic acid in bag tea infusions.J Chromatogr A. 2007;1156(1-2):312-320. doi:10.1016/j.chroma.2006.11.088Curran CP, Marczinski CA.Taurine, caffeine, and energy drinks: Reviewing the risks to the adolescent brain.Birth Defects Res. 2017;109(20):1640-1648. doi:10.1002/bdr2.1177Reyes CM, Cornelis MC.Caffeine in the diet: Country-level consumption and guidelines.Nutrients. 2018;10(11):1772. doi:10.3390/nu10111772Kakutani S, Watanabe H, Murayama N.Green tea intake and risks for dementia, Alzheimer’s disease, mild cognitive impairment, and cognitive impairment.Nutrients. 2019;11(5):1165. doi:10.3390/nu11051165Zamani M, Kelishadi MR, Ashtary-Larky D, et al.The effects of green tea supplementation on cardiovascular risk factors: A systematic review and meta-analysis.Front Nutr. 2023;9:1084455. doi:10.3389/fnut.2022.1084455Ohishi T, Fukutomi R, Shoji Y, Goto S, Isemura M.The beneficial effects of principal polyphenols from green tea, coffee, wine, and curry on obesity.Molecules. 2021;26(2):453. doi:10.3390/molecules26020453Filippini T, Malavolti M, Borrelli F, et al.Green tea (Camellia sinensis) for the prevention of cancer.Cochrane Database Syst Rev. 2020;3(3):CD005004. doi:10.1002/14651858.CD005004.pub3Sharma P, Montes de Oca MK, Alkeswani AR, et al.Tea polyphenols for the prevention of uvb-induced skin cancer.Photodermatol Photoimmunol Photomed. 2018;34(1):50-59. doi:10.1111/phpp.12356Xu R, Yang K, Li S, Dai M, Chen G.Effect of green tea consumption on blood lipids: a systematic review and meta-analysis of randomized controlled trials.Nutr J. 2020;19(1):48. doi:10.1186/s12937-020-00557-5Koch W, Zagórska J, Marzec Z, Kukula-Koch W.Applications of tea (Camellia sinensis) and its active constituents in cosmetics.Molecules. 2019;24(23):4277. doi:10.3390/molecules24234277American Heart Association.Green tea, coffee linked to lower death risk after stroke, heart attack.Lin YS, Tsai YJ, Tsay JS, Lin JK.Factors affecting the levels of tea polyphenols and caffeine in tea leaves.J Agric Food Chem. 2003;51(7):1864-1873. doi:10.1021/jf021066b
Heckman MA, Weil J, Gonzalez de Mejia E.Caffeine (1, 3, 7-trimethylxanthine) in foods: a comprehensive review on consumption, functionality, safety, and regulatory matters.J Food Sci. 2010;75(3):R77-R87. doi:10.1111/j.1750-3841.2010.01561.x
Kurosaka C, Tagata C, Nakagawa S, Kobayashi M, Miyake S.Effects of green tea and roasted green tea on human responses.Sci Rep. 2024;14(1):8588. doi:10.1038/s41598-024-59383-y
Tomata Y, Sugiyama K, Kaiho Y, et al.Green tea consumption and the risk of incident dementia in elderly Japanese: The Ohsaki Cohort 2006 study.Am J Geriatr Psychiatry. 2016;24(10):881-889. doi:10.1016/j.jagp.2016.07.009
Huxley R, Lee CM, Barzi F, et al.Coffee, decaffeinated coffee, and tea consumption in relation to incident type 2 diabetes mellitus: a systematic review with meta-analysis.Arch Intern Med. 2009;169(22):2053-2063. doi:10.1001/archinternmed.2009.439
U.S. Department of Agriculture.Beverages, tea, green, brewed, regular.
McLellan TM, Caldwell JA, Lieberman HR.A review of caffeine’s effects on cognitive, physical and occupational performance.Neurosci Biobehav Rev. 2016;71:294-312. doi:10.1016/j.neubiorev.2016.09.001
Kazemzadeh-Narbat M, Annabi N, Tamayol A, Oklu R, Ghanem A, Khademhosseini A.Adenosine-associated delivery systems.J Drug Target. 2015;23(7-8):580-596. doi:10.3109/1061186X.2015.1058803
Grosso G, Micek A, Castellano S, Pajak A, Galvano F.Coffee, tea, caffeine and risk of depression: A systematic review and dose-response meta-analysis of observational studies.Mol Nutr Food Res. 2016;60(1):223-234. doi:10.1002/mnfr.201500620
Guest NS, VanDusseldorp TA, Nelson MT, et al.International society of sports nutrition position stand: caffeine and exercise performance.J Int Soc Sports Nutr. 2021;18(1):1. doi:10.1186/s12970-020-00383-4
U.S. Department of Agriculture.Beverages, tea, black, brewed, prepared with tap water.
Camfield DA, Stough C, Farrimond J, Scholey AB.Acute effects of tea constituents L-theanine, caffeine, and epigallocatechin gallate on cognitive function and mood: a systematic review and meta-analysis.Nutr Rev. 2014;72(8):507-522. doi:10.1111/nure.12120
Saimaiti A, Zhou DD, Li J, et al.Dietary sources, health benefits, and risks of caffeine.Crit Rev Food Sci Nutr. 2023;63(29):9648-9666. doi:10.1080/10408398.2022.2074362
Yang DJ, Hwang LS, Lin JT.Effects of different steeping methods and storage on caffeine, catechins and gallic acid in bag tea infusions.J Chromatogr A. 2007;1156(1-2):312-320. doi:10.1016/j.chroma.2006.11.088
Curran CP, Marczinski CA.Taurine, caffeine, and energy drinks: Reviewing the risks to the adolescent brain.Birth Defects Res. 2017;109(20):1640-1648. doi:10.1002/bdr2.1177
Reyes CM, Cornelis MC.Caffeine in the diet: Country-level consumption and guidelines.Nutrients. 2018;10(11):1772. doi:10.3390/nu10111772
Kakutani S, Watanabe H, Murayama N.Green tea intake and risks for dementia, Alzheimer’s disease, mild cognitive impairment, and cognitive impairment.Nutrients. 2019;11(5):1165. doi:10.3390/nu11051165
Zamani M, Kelishadi MR, Ashtary-Larky D, et al.The effects of green tea supplementation on cardiovascular risk factors: A systematic review and meta-analysis.Front Nutr. 2023;9:1084455. doi:10.3389/fnut.2022.1084455
Ohishi T, Fukutomi R, Shoji Y, Goto S, Isemura M.The beneficial effects of principal polyphenols from green tea, coffee, wine, and curry on obesity.Molecules. 2021;26(2):453. doi:10.3390/molecules26020453
Filippini T, Malavolti M, Borrelli F, et al.Green tea (Camellia sinensis) for the prevention of cancer.Cochrane Database Syst Rev. 2020;3(3):CD005004. doi:10.1002/14651858.CD005004.pub3
Sharma P, Montes de Oca MK, Alkeswani AR, et al.Tea polyphenols for the prevention of uvb-induced skin cancer.Photodermatol Photoimmunol Photomed. 2018;34(1):50-59. doi:10.1111/phpp.12356
Xu R, Yang K, Li S, Dai M, Chen G.Effect of green tea consumption on blood lipids: a systematic review and meta-analysis of randomized controlled trials.Nutr J. 2020;19(1):48. doi:10.1186/s12937-020-00557-5
Koch W, Zagórska J, Marzec Z, Kukula-Koch W.Applications of tea (Camellia sinensis) and its active constituents in cosmetics.Molecules. 2019;24(23):4277. doi:10.3390/molecules24234277
American Heart Association.Green tea, coffee linked to lower death risk after stroke, heart attack.
Lin YS, Tsai YJ, Tsay JS, Lin JK.Factors affecting the levels of tea polyphenols and caffeine in tea leaves.J Agric Food Chem. 2003;51(7):1864-1873. doi:10.1021/jf021066b
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