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(Remember though: the National Cancer Institute doesnt recommend the use of tea as a treatment.). Because green tea is made from unfermented tea leaves -- black tea is fermented and oolong is partially fermented -- green tea contains more antioxidants than black or oolong, according to an article in the April 2006 "Journal of the American College of Nutrition." Green tea quite commonly gets associated with helping weight loss, but the truth is that no ones entirely sure. Every basic function and system relies on water. caffeine-sensitive). Oops. However, decaf still provides many of the same benefits as regular coffee, even if some are to a lesser extent. J Anal Toxicol. doi:10.3233/jad-2010-1378. Tea that is decaffeinated has undergone processing to reduce its naturally-occurring caffeine. These studies show that despite the reduced polyphenol content in decaf green tea, its benefits are still significant. They improve digestion & heart health, boost immunity, slow aging, and aid in weight loss. Mazzanti G, et al. Nutritionally speaking, decaf coffee offers some important perks. In addition, both decaffeinated and regular teas are rich in natural phytonutrients called flavonoids that have many health benefits. Published April 1, 2019. Here. However, if the green tea is decaffeinated using a process known as effervescence that uses only water and carbon dioxide, then only five percent of the green teas polyphenols is lost in the process. University of Maryland Medical Center: Green Tea. Let us discuss the many amazing benefits of this tea. Green tea benefits Aids weight loss. L-theanine promotes a feeling of calm, focused energy. Here's a rundown of the six health benefits of aloe vera juice, plus where to buy it and tips for preparing it at home. If you can tolerate caffeine, regular green tea is your best bet for antioxidant consumption. A December 2018 study in the European Journal of Nutrition found that decaffeinated green tea polyphenols prevented weight gain in mice with obesity, suggesting that decaf green tea may play a role in maintaining weight. Caffeine in tea does seem to have some health benefits. Something to consider if you are concerned about chemical exposure. Notify me of followup comments via e-mail. In general, tea contains about half as much caffeine as coffee. For instance, March 2021 research in Nutrients studied 27 people with overweight and found that taking a daily dose of decaf green tea extract improved fat breakdown compared to a placebo. Total flavonol content in decaffeinated teas was about half that of regular tea. A study conducted in 2003 found that the polyphenol content in green tea, flavanol in particular, is lower in decaf green tea than in regular tea. (2020) The effects of green tea amino acid L-theanine consumption on the ability to manage stress and anxiety levels: A systematic review. When Is The Best Time To Drink Green Tea? Our articles are evidence-based and contain scientific references, fact-checked by experts. WebDecaf Tea USA completed an extensive review of research related to tea and health; they found benefits ranging from improved cardiovascular health to a decrease in the risk of some types of cancer. These plant compounds are a type of antioxidant, known to have powerful vitalizing and anti-inflammatory properties. Its easy being green after all! Front Neurol. last updated - July 03, 2020 Journal of the American College of Nutrition; Beneficial Effects of Green Tea -- A Review; C. Cabrera, et al. How to get oil out of clothes? Green tea is packed with polyphenols, which are naturally occurring compounds found in plants, according to the Harvard T.H. Its almost universally applauded by science for being The Right Stuff. Everyone knows that green tea is pretty awesome. Improves Heart Health By lowering the triglyceride and cholesterol levels in your body, decaf green tea helps in promoting heart health. But if youre one of the people cursed with a caffeine sensitivity (it gives you a racing heart, jitters, restlessness, and headaches) and you still want those nifty green tea health perks, decaf green tea is a fab way for you to get them without the negative caffeine effects. Commercially, tea is decaffeinated one of three ways: The most common decaffeination method involves soaking tea leaves in a chemical solventeither ethyl acetate or methylene chloride. (5), Plus, this method isnt suitable for decaffeinating black tea. Polyphenols may also support healthy weight management and digestion, due to their prebiotic qualities. Green tea benefits Aids weight loss. Green tea extract does contain caffeine, which explains why it frequently lands in energy drinks. to reach 400 milligrams of caffeine. Updated November 2014. The caffeine in green tea doesnt really have much to do with green teas health benefits. What Are the Benefits of Giving Up Coffee for Green Tea? Pour out a cuppa, and relax! Still want to explore your decaf and caffeine-free options? Tea drinkers come in many forms. (. Jiwani AZ, Rhee DJ, Brauner SC, et al. FoodData Central. A study from the American Journal of Clinical Nutrition demonstrated the ability of green tea to burn High in antioxidants. Its also what comes out of your lungs when you exhale. Theres a couple of things you should watch out for: Tempted to brew and decaffeinate your own green tea at home? Why Choose Decaf Coffee? These are called herbal teas, or tisanes, and they are made from dried flowers, herbs, leaves, seeds, or roots. Sass is also a three-time New York Times best-selling author and Certified Plant Based Professional Cook. This green tea beverage comes with a lot of health benefits. Little of this research differentiates between caffeinated and decaffeinated tea, although they note one study found that smokers who drank four cups of decaffeinated green tea per day had a decrease in a biological marker implicated in the development of various forms of cancer. Published April 1, 2019. The debate on whether decaf coffee confers the same health benefits as regular coffee has been put to rest - at least when it comes to lowering liver enzymes. Return any unused cartons within 30 days for a full refundno questions asked. William J, et al. But remember that the decaffeinating process takes out some of the goodness, along with the caffeine. [2] Anticancer Properties The health benefits of green tea come from its polyphenols, such as catechin and flavonol. Hepatotoxicity of green tea: an update. More on that later. Polyphenols may also support healthy weight management and digestion, due to their prebiotic qualities. (, Plus, this method isnt suitable for decaffeinating black tea. In another study that involved overweight breast cancer survivors, researchers found that test subjects who consumed decaf green tea for six months show an average of 1.2 kg of weight loss, while women in the placebo groups gained an average of 0.2 kg of weight. FoodData Central. Like true teas, herbal teas have been used for centuries for their soothing and health-promoting properties. WebIn another study reported by Z.Y. The same amount of black tea has 40 to 60 milligrams, while green tea has just 15 milligrams. National Institute of Diabetes and Digestive and Kidney Diseases. The same amount of black tea has 40 to 60 milligrams, while green tea has just 15 milligrams. Wang Z.Y., et al. And as it turns out, there's science to back up these decaf green tea benefits. Well, if you bought it from one of those fancy stores where they keep the tea in a glass jar were really sorry to tell you, it might already be no bueno. In addition, both decaffeinated and regular teas are rich in natural phytonutrients called flavonoids that have many health benefits. A study from the American Journal of Clinical Nutrition demonstrated the ability of green tea to burn fat, highlighting links between intake and fat oxidation. The powerful health benefits of dates include providing an energy boost, increasing iron in the body, and aiding digestion. Researchers have evidenced that the risk of cardiovascular diseases, such as stroke and heart disease, can be lessened through the consumption of green tea. Research on peppermint tea is super limited, but it might be an effective home remedy for nasal congestion, nausea, menstrual cramps, and more. Theres some hope that drinking green tea may reduce your risk of developing cancer, thanks to those antioxidant superheroes. U.S. Department of Agriculture. Decaf tea is sold both as loose leaf and ready-to-go tea bags, as well as in blends, like, Whats great about decaf tea is that tea drinkers can enjoy their favorite tea type without the caffeine boost (unless youre. She is currently the nutrition consultant for UCLA's Executive Health program. Another decaf green tea benefit is that it may enhance your memory. Clipper Fairtrade Organic Decaf Green Tea: available at AmazonThis green tea is organically grown and is decaffeinated using a natural carbon dioxide process that leaves it packed with its natural antioxidants and allows you to reap the benefits of green tea without upping your caffeine intake. But I was not about to give up my beloved coffeeor tea, for that matter. All rice noodles and rice paper wraps are gluten-free as they are made wholly from rice. See a certified medical professional for diagnosis. Again, the jurys out. This spicy root is also good for mitigating obesity and relief from menstrual pain. Connect with her on Instagram and Facebook, or visit www.CynthiaSass.com. Do High Levels of Caffeine Cause Liver Damage? Okay, lets go back to the decaf vs. regular green tea debate. Decaf green tea has gone through the same process of decaffeination being soaked in a solution to remove the naturally occurring caffeine before being boxed up and put on sale. Who wants to only use decaf green tea in a drink? (2021). If you chose to drink tea for its possible health benefits, the University of Maryland recommends caffeine-free products. But it doesnt remove all of them. Its certainly drinkable, but light is not the friend of dried tea, and the suns rays passing through the jar have probably already degraded it a bit. WebGreen and black tea have both been demonstrated to lower cholesterol and triglyceride levels, thereby possibly reducing the risk of heart disease and heart attack. Effect of supercritical carbon dioxide decaffeination on volatile components of green teas. Another concern is that packaging usually doesnt disclose the decaffeination method. For die-hard green or black tea lovers who want to sip their brew right up until bedtime, this is a major selling point. 2018;4(4):425-432. doi:10.1016/j.jacep.2018.01.012, Papakonstantinou E, Kechribari I, Sotirakoglou , et al. 2013;226(2):229-40. doi:10.1007/s00213-012-2889-4, Freedman ND, Park Y, Abnet CC, Hollenbeck AR, Sinha R. Association of coffee drinking with total and cause-specific mortality. Green Tea Packs Plenty of Health Benefits but It's Not Right for Everyone, Harvard T.H. Cancer Research; Inhibitory Effects of Black Tea, Green Tea, Decaffeinated Black Tea, and Decaffeinated Green Tea on Ultraviolet B Light-induced Skin Carcinogenesis in 7,12-dimethylbenz[a]anthracene-Initiated SKH-1 Mice. Indeed, a small March 2018 study in the Journal of Nutrition, Health and Aging found that decaffeinated green tea extract improved the working memory capacity of 20 people assigned female at birth between the ages of 50 and 63. (2015). The 4 Coffee Brands a Nutritionist Always Buys Online, Drinking 3 Cups of Coffee a Day May Help Maintain Low Blood Pressure, Study Says, 6 Eating Habits That Weaken Your Immune System Health, Ultra-Processed Foods To Replace Right Now, The 9 Best Body Sunscreens Dermatologists Recommend for Year-Round Protection, How Drinking 2-3 Cups of Coffee a Day May Help You Live a Longer Life, 13 Best Probiotic Foods For Your Gut Health, Coffee or Tea? One of the biggest health perks of regular tea is its polyphenols. Thats probably just a supply and demand thing. But many of my clients, who often travel for work or simply keep unconventional hours, struggle with the same issue: an erratic caffeine intake can lead to spikes and drops in energy that ultimately zap your get-up-and-go. The same amount of black tea has 40 to 60 milligrams, while green tea has just 15 milligrams. In addition, both decaffeinated and regular teas are rich in natural phytonutrients called flavonoids that have many health benefits. Evidence Based. Carbon dioxide decaffeination infuses water with CO2 in high-pressure tanks. This is likely to be because green tea has been suggested to reduce high cholesterol, which is one of the most significant risk factors for these diseases. The antioxidant-related decaffeinated green tea benefits don't stop there the polyphenols may also help lower your risk for certain diseases. Its true that the decaffeination process removes some antioxidants, as well as other healthy chemical compounds known as flavanols. They are naturally decaffeinated rather than processed through the use of chemical solvents, meaning that all the tea's antioxidants are not stripped away. The antioxidants in tea may help prevent artherosclerosis, and may help block the absorption of cholesterol. It may also reduce the risk of premature death. Copyright 2023 Leaf Group Ltd., all rights reserved. Green tea plays a role in a wide range of recipes, meaning that if youre not a fan of hot drinks, you can still get all that antioxidant goodness without having to boil your kettle. So how does decaf green tea fare when it comes to benefits, and how does it stack up against its caffeinated cousin? Pique's Head of Content & Wellness Education, is a Certified Personal Trainer, Fitness Nutrition Specialist, RYT, and holds a JD from UC Berkeley. 6 Health Benefits of Decaf Green Tea 1. Coffee drinkers may find that simply replacing coffee with regular tea automatically puts their caffeine intake in a healthier range. It has many health benefits,including weight loss, improved heart health, lowered cholesterol levels, and prevention of cancer. The decaffeination process slightly reduces the polyphenol content of black tea and may affect polyphenol absorption. Dr. Pujari notes that if the package doesn't say, find out by calling the manufacturer. WebToo much caffeine can interrupt the sleep cycle and cause side effects including nausea, upset stomach, aggravate acid reflux, and trigger migraines. Free radicals are unstable molecules that form in your body when youre exposed to cigarette smoke, air pollution, or too much sunlight. Instead, its best to choose tea that comes in a tin or box, and put it straight into the fridge. Spilling the beans: How much caffeine is too much?. (10). Frequently seen on national TV, she's Health's contributing nutrition editor and counsels clients one-on-one through her virtual private practice. I fell asleep faster and slept more soundly. The decaffeination process slightly reduces the polyphenol content of black tea and may affect polyphenol absorption. So if you are caffeine-sensitive, you may want to reach for the decaf version of your favorite tea. , will give you caffeine jitters or withdrawal symptoms, well, theyre not very likely to do so. In this case the results seemed to be tied to the caffeine, as caffeinated coffee had a similar effect. However, decaf still provides many of the same benefits as regular coffee, even if some are to a lesser extent. When she's not teaching or writing, you can find her hiking, mountain biking, cycling, backcountry skiing, camping and drinking anywhere from 5-7 cups of tea per day. While more research is needed to establish a clear correlation between green tea's antioxidants and chronic illness, one review of observational studies found that women who consumed green tea frequently were at 20%-30% lower risk of developing breast cancer compared with those who did not. Caffiene in coffee. The Seattle Times; Green Tea and The Breast-Cancer Connection; Astrid Pujari, M.D. Health Conditions Alzheimer's & Dementia The biggest disadvantage of decaf tea is that it may not have the same health benefits as regular tea. [5]. The antioxidants in this tea lower the risk of clogged arteries, and thereby prevent the risk of a stroke and heart attack. Antioxidants help neutralize the effects of free radicals, which are atoms formed in your body as a result of pollution or toxins like cigarette smoke and that can damage cells. Wang, et al., in the July 1994 issue of "Cancer Research," decaf tea was shown to be less effective than caffeinated tea at inhibiting skin tumors in mice. Hot water can also strip caffeine from tea, though this method is rarely used. (2017) Decaffeinated green and black tea polyphenols decrease weight gain and alter microbiome populations and function in diet-induced obese mice. The Definition of Decaf. Specifically, decaffeination may destroy a large portion of polyphenols and antioxidants. Its also worth remembering that caffeine slightly raises blood pressure, so if thats something youve been having issues with, a switch to decaf can actually be better for you than drinking caffeinated green tea! Beautiful breakfast table with a cup of tea and kettle Photo Credit: Shutterstock, By lowering the triglyceride and cholesterol levels in your body, decaf green tea helps in promoting heart health. But the tea dates back thousands of years in China and Japan, where it was often used for medicinal purposes, according to the NCCIH. Ginger also helps boost bone health, strengthen the immune system, and increase appetite. Title 21--food and drugs chapter I--food and drug administration. Thats only 2 cups of strong coffee, after all. Wang, et al., in the July 1994 issue of "Cancer Research," decaf tea was shown to be less effective than caffeinated tea at inhibiting skin tumors in mice. Why Choose Decaf Coffee? A recent study in Japan looked at whether a daily intake of decaf green tea could improve memory and so far, the results are looking pretty good! There are many reasons you might need to avoid caffeine . In either case, breaking free could be the key to feeling better. Word of Warning:Always consult your doctor while consuming this tea if youre pregnant or breastfeeding, going through chemotherapy, and or struggling with diabetes. U.S. Department of Agriculture. Weve already seen that decaf contains fewer antioxidants than caffeinated green tea so why bother drinking it? To avoid chemical solvents, you have to call the manufacturer, or try to remember their sneaky labeling tricks: naturally decaffeinated is usually chemical solvent decaffeination, while certified organic can only mean CO, The biggest disadvantage of decaf tea is that, . My current favorite brand of decaf coffee is Mount Hagen Organic Fair Trade Instant Coffee. Beverage caffeine intakes in the U.S. Food Chem Toxicol. Green tea extract does contain caffeine, which explains why it frequently lands in energy drinks. They used decaffeinated green tea in the test and found marked increase in the EGCG level in test subjects who consumed about 530 milligrams of decaf green tea extract, which is equivalent to about six to eight cups of decaf green tea per day. The antioxidants in this brew may also help you shed pounds indeed, decaf green tea is good for weight loss. Cynthia Sass is a nutritionist and registered dietitian with master's degrees in both nutrition science and public health. It may also reduce the risk of premature death. Green and black tea contain polyphenols that have strong antioxidant effects, potentially reducing your risk of heart disease. The antioxidants in this tea lower the risk of clogged arteries, and thereby prevent the risk of a stroke and heart attack. Effects of caffeinated coffee consumption on intraocular pressure, ocular perfusion pressure, and ocular pulse amplitude: A randomized controlled trial. But according to the May 2004 "Berkley Wellness Letter," after further study, the FDA approved it for use. You can try a variety of flavors in any form you fancy: loose tea, tea bags, or our very own, One of the biggest health perks of regular tea is its polyphenols. The caffeine in green tea doesnt really have much to do with green teas health benefits. Some are more concrete than others, but here are three of the things that food boffins get most excited about. You can use black, green, or herbal tea bags to help different eye ailments. They cause a process called oxidative stress, which is thought to play a role in all sorts of unpleasant diseases, including cancer, Alzheimers, and Parkinsons. You encounter it every dayits a greenhouse gas in the atmosphere and its what plants convert into oxygen. Dates are sweet fruitsof the date palm tree. Vanya has completed the Introduction to Food and Health certificate program from Stanford University, US. FoodData Central. Specifically, decaffeination may destroy a large portion of polyphenols and antioxidants. Okay, so going decaf isnt all about the de-light. An RD Weighs in on Which Is Healthier, These 5 Herbal Teas Have the Biggest Health Benefits. , a lot of the best health benefits are unproven so far , best decaf green teas can be more expensive , 728 to 1,686 Trolox equivalents (the thing you measure antioxidants in) per gram in regular tea, 507 to 845 Trolox equivalents per gram in decaf. Published August 2010. Just 8 ounces of green tea contains between 20 and 50 milligrams of caffeine. Does decaf green tea offer fewer benefits than regular green tea? Acute effects of coffee consumption on self-reported gastrointestinal symptoms, blood pressure and stress indices in healthy individuals. Vanya Sharma is a writer at heart with interests in the health and nutrition domain and has experience in content creation, collaboration, and content strategy. Henning, et al. The comparison beverage in this study, however, was water rather than caffeinated tea. I always stash single-serve packets in my bag, especially because some high-end coffee spots don't offer decaf espresso. Archives of Internal Medicine: Coffee, Decaffeinated Coffee, and Tea Consumption in Relation to Incident Type 2 Diabetes Mellitus, Parkinsonism And Related Disorders: Intake of Japanese and Chinese Teas Reduces Risk Of Parkinson's Disease, Tea USA: An Overview of Research on the Potential Health Benefits of Tea; 2011. There are two reasons for this: 1) cup-for-cup, tea has less caffeine than coffee and 2) tea contains l-theanine, a unique amino acid that affects how your body absorbs caffeine, giving it almost more of a time-released effect. Here's how you can use different teas as a cold or warm compresses for, Thinking about making the switch from coffee to matcha? But what about decaf green teas benefits? Thatd just be insanity! Were used to thinking of all cholesterol as bad, but this is actually a good one that helps keep your heart healthy, meaning that green tea could possibly help you live longer. Lee S, et al. If youre not the biggest fan of green teas flavor, try adding 1 teaspoon of honey as a natural sweetener. Is it as healthy as caffeinated green tea? Its full-bodied flavor profile and warm nutty notes makes it a great, naturally caffeine-free substitute for black tea. Health Conditions Alzheimer's & Dementia These decaf processes remove some of the antioxidants. Decaf green tea is a type of green teathat does not contain any caffeine. My energy increased, and I felt more tuned in to my true energy level, unmasked by caffeine's stimulating effect. However its impossible to remove all the caffeine during decaffeination, which is why decaf tea is never completely caffeine-free. A study from the American Journal of Clinical Nutrition demonstrated the ability of green tea to burn High in antioxidants. Distributed by Tribune Content Agency, LLC. I'm coming out as a decaf drinker. With studies being conducted into whether it could reduce the risk of cancer and other diseases, decaf green tea is possibly much more than something to dunk your cookie in. So what about decaf? If you must choose the decaf version, try to find one that is decaffeinated by the carbon dioxide method. And you can still harness some of those healing properties today. (7) In other words, the opposite of the coffee jitters. Here is the step-by-step method to use lemongrass. However, this decrease was slight only about 1.6 percent (for instance, a person with 20 percent body fat would decrease their body fat to 19.68 percent). Eating, diet and nutrition for GER and GERD. 2019;10:1275. doi:10.3389/fneur.2019.01275, Lara DR. Caffeine, mental health, and psychiatric disorders. A Japanese study led by K. Tanaka reported in the April 2011 issue of Parkinsonism and Related Disorders that drinking black tea decreased the risk of Parkinsons disease. To help, here are the health perks of the brew (and whether decaffeinated green tea is good for you). For instance, both decaf and regular coffee help lower the risk of diabetes, protect the liver, aid heart health and improve brain function. Studies in Japan and China seemed to find that regular green tea drinkers have a slower decrease in HDL-C cholesterol. The antioxidants in this tea lower the risk of clogged arteries, and thereby prevent therisk of a stroke and heart attack. ", Cleveland Clinic: "Caffeine: How to Hack It and How to Quit It", Cleveland Clinic: "Can You Really Have Too Much Caffeine? The other solvent, methylene chloride, is an industrial compound used in paint removers, pharmaceuticals, and aerosols. She says that, depending on the brand, polyphenols could be reduced by 15 to 25 percent when green tea is decaffeinated. While any true tea can be decaffeinated, its hard to find anything other than black and green decaf teas sold commercially. One study showed that CO2 decaffeination of green tea reduced its epigallocatechin gallate (EGCG) content by almost 40%. This article contains scientific references. One study showed it only reduced the amount of caffeine in green tea by 83%, 10% shy of the requirement for a decaf label. Carbon dioxide decaffeination infuses water with CO, Possibly because it doesnt remove caffeine as effectively as other methods. Two use the chemical solvents ethyl acetate and methylene chloride, one uses carbon dioxide and one uses water. Our content does not constitute a medical consultation. University of California at Berkley; Wellness Letter; Is It True What They Say About Decaf? 2023 Greatist a Red Ventures Company. Beth Greenwood is an RN and has been a writer since 2010. For instance, both decaf and regular coffee help lower the risk of diabetes, protect the liver, aid heart health and improve brain function. Another concern is that packaging usually doesnt disclose the decaffeination method. Beverages, tea, green, brewed, decaffeinated. Also, the mental performance benefits of coffee are not entirely attributed to caffeineantioxidants and other bioactive compounds play a role too, meaning even decaf may give you a brain boost! Magic mushrooms aren't just good for tripping. We walk. Technically, they arent true teas since they dont contain leaves of the tea plant (Camellia sinensis). That's because caffeine can help decrease inflammation and narrow your blood vessels, all of which may lessen head pain, per the Harvard T.H. Caution is advised to those who are going through chemotherapy asthis tea may interfere with its medication. WebI also asked Dr. Hakim whether or not decaffeinated green tea loses any of the beneficial polyphenols regular green tea contains. Technically, they arent true teas since they dont contain leaves of the tea plant (. Chan School of Public Health: "Caffeine", Tufts University: "Does Decaffeinated Black Tea Have the Same Benefits? In another study conducted in 2011, researchers wanted to find out the effect of green teas catechins on obese men. It also contains less caffeine than fermented teas. Your email address will not be published. "Decaf" doesnt necessarily mean a beverage is completely free of caffeine, per the U.S. Food and Drug Administration. FoodData Central. In other words, you can drink about 200 cups of decaf green tea per day. Are there other caffeine-free tea options? Coffee drinkers may find that simply replacing coffee with regular tea automatically puts their caffeine intake in a healthier range. Published April 1, 2019. Both caffeinated and decaffeinated coffee is associated with a low risk of diabetes. Some people might say that decaf green tea is just as hydrating as water, while others might say that it doesnt offer the same benefits. The entire list of reference links is also provided at the bottom of the article. For me, ditching caffeine greatly improved my quality of life and overall wellness. Psychopharmacology (Berl). Tea is a complex beverage which contains a variety of compounds and substances. Ultimately, it is up to the individual to decide what they think is best for their own hydration needs. You can use baking soda, chalk, or dishwashing liquid to loosen the stain before a wash. 2023 Organic Information Services Pvt Ltd. All the information on this website is for education purpose only. All types of tea can be decaffeinated, although black tea, oolong tea, and green tea from the Camellia sinensis plant are the most popular and widely available varieties. We Recommend Nutrition The Effect of Black Tea on Weight Loss Health Tea and Blood Pressure: Know the Effects Health By law, anything labeled decaf cannot contain more than 3% of its original caffeine content.