A book written by Lu Yu in 600-900 AD (Tang Dynasty), "Tea Classic" (simplified Chinese: 茶经; traditional Chinese: 茶經; pinyin: chájīng), is considered important in green tea history. The Kissa Yojoki (喫茶養生記 Book of Tea), written by Zen priest Eisai in 1211, describes how drinking green tea may affect five vital organs, the shapes of tea plants, flowers and leaves, and how to grow and process tea leaves.
Jump up ^ EFSA Panel on Dietetic Products, Nutrition and Allergies (NDA)2, 3 European Food Safety Authority (EFSA), Parma, Italy (2010). "Scientific Opinion on the substantiation of health claims related to various food(s)/food constituent(s) and protection of cells from premature aging, antioxidant activity, antioxidant content and antioxidant properties, and protection of DNA, proteins and lipids from oxidative damage pursuant to Article 13(1) of Regulation (EC) No 1924/20061". EFSA Journal. 8 (2): 1489. doi:10.2903/j.efsa.2010.1489.

What are the health benefits of black tea? Black tea is a popular drink worldwide. Polyphenols and other ingredients may make tea drinking not only a pleasant social ritual, but good for health, too. It may help beat stress, boost thinking, decrease cancer risk, and reduce arthritis. However, too much can cause heart arrhythmias. Find out more. Read now


Along with caffeine, which gives green tea its characteristic taste, bitterness, and stimulating effect, green tea is also rich in a group of chemicals, called catechin polyphenols (commonly known as tannins, which contribute to bitter taste and astringency). These catechin polyphenols include catechin, epicatechin, epicatechin gallate (ECG), epigallocatechin gallate (EGCG), and various proanthocyanidins. They are also known as flavonoids and are very powerful antioxidants. Flavonoids, together with some amino acids like thiamine, are responsible for the potent flavor of green tea.
Jump up ^ Iswaldi, I; Arráez-Román, D; Rodríguez-Medina, I; Beltrán-Debón, R; Joven, J; Segura-Carretero, A; Fernández-Gutiérrez, A (2011). "Identification of phenolic compounds in aqueous and ethanolic rooibos extracts (Aspalathus linearis) by HPLC-ESI-MS (TOF/IT)". Analytical and Bioanalytical Chemistry. 400 (10): 3643–54. doi:10.1007/s00216-011-4998-z. PMID 21509483.
Another benefit of green tea it’s is lower in caffeine than most other teas, so you may be able to drink the five cups a day that lowered psychological stress in a large group of Japanese people in a recent study done at Sendai’s Tohoku University Graduate School of Medicine. The researchers didn’t identify any particular component of green tea that might have been soothing, but animal studies suggest that one compound, EGCC, had both sedative and hypnotic effects that tamp down the body’s production of stress chemicals.
Since green tea is less oxidized than its black tea cousin, it is technically fresher and more delicate, so it should be consumed more quickly for maximum flavor. Green tea is best consumed within six months to a year of purchase. You should also take care to store your green tea in a cool, dark place, away from light, oxygen, moisture and fragrant pantry companions like coffee or spices.
Even organically grown green teas have been shown to contain lead, which is absorbed by the plant from the environment, particularly tea grown in China. When traditional green tea is steeped, about 90% of the lead stays in the leaf, which is discarded. With matcha, since the whole leaf is consumed, you will ingest more lead. One independent group, ConsumerLab.com, which tested teas, estimates that a cup of matcha may contain as much as 30 times more lead than a cup of green tea. Therefore, they recommend drinking no more than one cup daily, and not serving it to children.
Ginger Root, the underground stem, or rhizome, of the plant Zingiber officinale, has been used in many herbal traditions since ancient times. In Ayurveda, Ginger is known as the wonder herb, and it's no wonder, since Ayurveda employs Ginger for a wide variety of health applications, including digestive support. Historically, Ginger Root was also one of the most respected herbs for supporting joint health. Additionally, Ginger Root has been traditionally used to support healthy peripheral circulation; and can aid in warming up cold hands and feet, and will also promote sweating when needed.
“Specific detox teas offer added benefits in the additional ingredients,” says Villacorta. Herbs like lemongrass, ginger, dandelion, and milk thistle all contain properties said to support a healthy liver, one of those organs in charge of your natural detoxifying process. Ginger has also been proven to alleviate oxidative stress within the liver, which indirectly helps the organ perform its cleaning task more efficiently, he says.
Prior to use, the matcha often is forced through a sieve in order to break up clumps. There are special sieves available for this purpose, which usually are stainless steel and combine a fine wire mesh sieve and a temporary storage container. A special wooden spatula is used to force the tea through the sieve, or a small, smooth stone may be placed on top of the sieve and the device shaken gently.
In January 2015, we wrote about the rapid rise of matcha on the American beverage landscape and posed the question, “Have we reached maximum matcha saturation?” Three years later, we're living amid matcha croissants, matcha custard pie, matcha face masks, matcha lifestyle guides and $50 cups of matcha itself. Clearly, the answer was "No." But what is this powder we're whisking into green lattes, baking into doughnuts, blending into smoothies, and adding to our fish fillets?
Rooibos is being heavily hyped by producers and distributors as a new health beverage. Unlike true “tea,” it is caffeine-free and low in tannins. It contains minimal amounts of calcium, potassium, iron, zinc, magnesium and much less fluoride than found in real teas. Studies have shown that Rooibos does contain antioxidants and therefore might have some of the health benefits of green tea, but very little research has confirmed this. I found only 17 scientific studies of Rooibos compared to more than 1,000 on green tea. So far, none suggest that Rooibos is the health equivalent of green tea.
Red tea is also known as Black tea in Asia. White, green, oolong, and black teas all come from the same plant, the Camellia sinensis. The difference in their flavor lays on the drying processes of their leaves, which determine how oxidized the final product is. Red tea is made of completely oxidized tea leaves, resulting in a darker and aromatic tea drink.
Generally, lower-quality green teas are steeped hotter and longer while higher-quality teas are steeped cooler and shorter, but usually multiple times (2-3 typically). Higher-quality teas like gyokuro use more tea leaves and are steeped multiple times for short durations. Steeping too hot or too long results in the release of excessive amounts of tannins, leading to a bitter, astringent brew, regardless of initial quality. The brew’s taste is also affected by the steeping technique; two important ones are to warm the steeping container beforehand to prevent the tea from immediately cooling down, and to leave the tea leaf in the pot and gradually add more hot water during consumption.[citation needed]
One of Japan’s own Zen priests studying in China’s Buddhist monasteries returned to Japan in the early 12th century with tea plant seeds and bushes. The young priest, called Eisai, used his experience in China growing and drinking “beaten tea” to popularize what he called “the way of tea” as a meditation ritual within his community of Japanese Buddhist monks. Eventually, he spread the tea drinking custom throughout the rest of Japan.

Once on the toilet, I continued to be hit with these cramps as my body began to get cold. My hands and feet became clammy and I was shaking. I had goosebumps allover. I tried to use the restroom but my heart did this thing where I could feel it flutter. Everything around me got quiet, deafening, and all I could hear was my heartbeat. It was an out-of-body experience. I felt hollow, chilly, still, and petrified.

The rooibos plant is endemic to a small part of the western coast of the Western Cape province of South Africa. It grows in a symbiotic relationship with local micro-organisms. Scientists speculate that climate change may threaten the future survival of the plant and the R600-million (approximately €43-million in March 2017) rooibos industry. Some claim that increasing temperatures and decreasing rainfall may result in the extinction of the plant within the next century.[15]
Safety Warning Do not brew more than 15 minutes. Do not brew more than 15 minutes. This Product is a dietary supplement - Do not take more then recommended - Do not take this product if you have high blood pressure or cardiovascular disease. -Do not take if pregnant or breast feeding - Consult your doctor before using this product if you have any medical conditions This product is recommended for adults only. If you are pregnant or have any concerns regarding interactions with your medications, please consult your doctor before taking. The vast majority MateFit users won't feel any side effects from these ingredients. But, since humans come in many different sizes and shapes we cannot guarantee that EVERYONE on planet earth will have a positive experience. If you do sense any ill side effects, then don't worry they're not life threatening and you can stop consuming MateFit at any time. Some of the side effects might be: rashes, breaking out (pimples), itchy throat, or nausea. —
Chris Kilham is a medicine hunter who researches natural remedies all over the world, from the Amazon to Siberia. He teaches ethnobotany at the University of Massachusetts Amherst, where he is Explorer In Residence. Chris advises herbal, cosmetic and pharmaceutical companies and is a regular guest on radio and TV programs worldwide.  His field research is largely sponsored by Naturex of Avignon, France. Read more at www.MedicineHunter.com
Sometimes given to babies suffering from colic, rooibos is known for anti-spasmodic activity. A growing body of evidence suggests that the health benefits of rooibos may be quite broad, including evidence that the antioxidants in the tea may reduce the risk of heart disease, and may inhibit some parameters of aging. Rooibos even shows use as a cosmetic ingredient for soothing, protecting and repairing skin.
Green tea is a longtime treasure of China and Japan that is gaining popularity in America. It’s easy to understand why: the best green tea leaves are heated or steamed right after harvest, preserving their all-natural flavor and resulting in a nourishing beverage containing antioxidants. With about half the caffeine of black tea, you get the health benefits of green tea in every gentle cup. You can buy green teas in either loose-leaf or green tea bags.
One thing to watch out for in detox teas, though, is a common ingredient—and herbal laxative—senna. “One part of detoxing is the cleansing of the intestines, and senna aids this process,” he explains. While it can be helpful as a night-time drink short-term, taking senna for too long can cause vomiting, diarrhea, electrolyte imbalance, and dehydration. If you feel stopped up, incorporate a senna tea for a few nights (Villacorta recommends Traditional Medicinals Organic Smooth Move). But stick to senna-free varieties for your habitual cup.
This best-selling detox tea has a loyal following, with thousands of reviewers claiming that it helped with excess bloating, daily digestive issues, and ultimately contributed to weight loss when consumed alongside a balanced diet and regular exercise. Made with green tea leaf, matcha green tea, and guarana seed, this tea blend is quite caffeinated — so don't sip it before bedtime. 
contains antioxidants, including polyphenols such as epigallocatechin gallate (EGCG), which can powerfully quench damaging “free radicals,” metabolic byproducts that are chemically reactive and can damage cells. According to a study published in the European Journal of Clinical Nutrition, the polyphenols found in green tea provide six times the radical-quenching potential of those found in black tea.
One of the key components in Matcha is the amino acid L-theanine, which is found almost exclusively in shade-grown green teas like Matcha. When L-theanine is combined with the natural caffeine in tea, it metabolizes more slowly, releasing the caffeine over a longer period of time and providing a stable three to six hour long energy boost (versus coffee caffeine at an hour to an hour and a half).
All that being said, it should come as no surprise that I fell victim to the active marketing campaigns of one of the year’s biggest trends: fitness teas. You know what I’m talking about: stars and influencers like Kylie Jenner, Catherine Giudici Lowe, and Vanessa Hudgens are touting the successes of their respective experiences with fitness teas. These teas (by various brands) claim to eliminate bloat, cleanse your insides, and detoxify your organs. They claim to help you lose weight and curb cravings. Seriously? I thought as I scrolled through ad after ad. Sign. Me. Up.

One of the key components in Matcha is the amino acid L-theanine, which is found almost exclusively in shade-grown green teas like Matcha. When L-theanine is combined with the natural caffeine in tea, it metabolizes more slowly, releasing the caffeine over a longer period of time and providing a stable three to six hour long energy boost (versus coffee caffeine at an hour to an hour and a half).
Green tea has many health benefits. “It contains many nutrients, including antioxidants and anti-cancer and brain-healthy compounds,” Smith reminds us. One thing is for sure: regardless of whether or not you’ll shed pounds with green tea, drink it anyway. “All teas contain many healthful nutrients; it’s one of the healthier choices for a beverage!” Smith says.
According to the National Cancer Institute, the polyphenols in tea have been shown to decrease tumor growth in both animal and laboratory studies. Researchers believe that it is the high level of polyphenols in tea that help kill cancerous cells and stop them from growing, although the exact mechanism by which tea inhibits and prevents cancerous cells is uncertain.
Do you know what the term “cha” means, which is often found in the names of various qualities of green tea such as gyokurocha, sencha, bancha, matcha, and houjicha? It simply means “tea”, and tea is extremely popular all over India as “cha” (in Bengal & adjacent states) and “chai” in other areas. Just some fun facts for you to share with other tea lovers over your next cup of green tea!
Another big draw health benefit-wise is that matcha, like green tea, is loaded with antioxidants. A study, published in 2014, found the plant also had antimicrobial properties, particularly the four types of catechins (antioxidant properties flavonoids) it contains, against a few different types of microorganisms. Yet another study, published in Nature, proved that catechins inhibit the growth of a bacteria called Fusobacterium nucleatum — the bacteria that causes cavities and periodontal disease.
ODS seeks to strengthen knowledge and understanding of dietary supplements by evaluating scientific information, supporting research, sharing research results, and educating the public. Its resources include publications (such as Dietary Supplements: What You Need to Know), fact sheets on a variety of specific supplement ingredients and products (such as vitamin D and multivitamin/mineral supplements), and the PubMed Dietary Supplement Subset
Most Japanese teas are blended from leaves grown in different regions, with less emphasis on terroir than in the Chinese market. Because of the limited quantity of tea that can be produced in Japan, the majority of production is dedicated to the premium tea market. Bottled tea and tea-flavored food products usually use lower-grade Japanese-style tea produced in China.[57]
Drinking detox teas can help you lose weight quickly. These teas are made by mixing the right amounts of herbs, flowers, roots, and stems with traditional teas like green tea, Pu Erh, etc. The phytonutrients in these teas flush out toxins and boost the health of the liver and the digestive system, thereby triggering weight loss. Also, detox tea drinkers sleep better, look younger, and have better immunity. This article lists the 10 best detox teas for weight loss with the ingredients, taste, cost, user review, and where to buy. So, how does a “teatox” work? Find out below.
One thing to watch out for in detox teas, though, is a common ingredient—and herbal laxative—senna. “One part of detoxing is the cleansing of the intestines, and senna aids this process,” he explains. While it can be helpful as a night-time drink short-term, taking senna for too long can cause vomiting, diarrhea, electrolyte imbalance, and dehydration. If you feel stopped up, incorporate a senna tea for a few nights (Villacorta recommends Traditional Medicinals Organic Smooth Move). But stick to senna-free varieties for your habitual cup.
In 2004, scientists at the University of Newcastle studied the effects of black and green tea on Alzheimer’s disease. In laboratory studies, both teas prevented the breakdown of acetylcholine, the neurotransmitter strongly linked with memory. The teas also inhibited enzymes known as BuChE and beta-secretase. These enzymes are found in protein deposits found in the brain of Alzheimer’s patients. (7)

Furthermore, green tea also contains amino acids such as theanine, butyric acid, and lignin; xanthine alkaloids such as adenine, dimethylxanthine, theobromine, theophylline, and xanthine; pectin (also found in fruits); saccharides (sugar), chlorophyll, and triterpene saponins. Vitamins, like vitamin A, B1, B2, B3, C, and E are also found in green tea. After that impressive list, perhaps you can begin to understand how packed green tea is with nutrients and beneficial components.
Matcha literally means "powdered tea." When you order traditional green tea, components from the leaves get infused into the hot water, then the leaves are discarded. With matcha, you’re drinking the actual leaves, which have been finely powdered and made into a solution, traditionally by mixing about a teaspoon of matcha powder with a third cup of hot water (heated to less than a boil), which is then whisked with a bamboo brush until it froths.
Yup, those samurai. The samurai were cultured, fearsome warriors who ranked highly in ancient Japanese caste society. Their identity was built on Zen Buddhism, practicing the principles of discipline, ritual, and purification. The tea ceremony developed into an art form and cultural tradition as the samurai added hundreds of detailed steps in the practice. Specific instructions for how to sit and how to prepare Matcha green tea, the proper hand movements and even the proper design for a tea room were recorded in detail.

But when it comes to detoxification, tea alone isn’t enough for the job. “No one food, herb, or remedy has the ability to cure ailments or disease, nor does it have the ability to ‘detox’ the body,” says Manuel Villacorta, R.D, author of Whole Body Reboot: The Peruvian Superfoods Diet to Detoxify, Energize, and Supercharge Fat Loss. (This is also why you might want to hold off before trying to detox by drinking activated charcoal.)
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can increase energy and mental focus. Green tea contains a small amount of caffeine, which a 2008 study in Nutrition Bulletin found can improve mood, cognitive function and physical performance. Green tea contains less caffeine than does coffee, and provides L-theanine, an amino acid shown to promote a state of calm awareness. Result: green tea provides the benefits of alertness associated with caffeine without the “jittery” feeling often experienced as a side effect of coffee.
Rooibos is especially rich in the super-antioxidant compound quercetin. A titan among the antioxidants, quercetin imparts benefits to the heart, helps to reduce the risk of various types of cancers, fights viruses and is significantly anti-inflammatory. Inflammation is part of all known chronic degenerative diseases. The anti-inflammatory activity of quercetin means that it helps to reduce the risk of many types of health disorders.
Matcha typically has more caffeine content than green tea, similar caffeine to black tea, and less caffeine than brewed coffee. Because matcha is produced from shade-grown tea bushes, the tea leaves tend to retain more of their caffeine content. In addition, since you’re consuming the ground tea leaf when sipping matcha, you’re ingesting more caffeine content than you would from the extraction of steeped green or black tea leaves. Like all drinks cultivated from caffeinated plants, however, a specific level of caffeine per cup of matcha tea will depend on the how the matcha was processed and prepared. Be sure and read the packaging carefully or ask your tea supplier directly for the caffeine information specific to the matcha you are buying.
Green tea has slightly more antioxidants compared to black tea, although both are still great sources. The ORAC value (antioxidant content) of brewed black tea is 1,128 while green tea is slightly higher at 1,253. Black tea and green tea both contain antioxidants, including polyphenols. Some research shows that green tea contains more than four times the catechins that black tea does. Both types can contribute antioxidants to your diet and have been shown to have antiviral, anti-inflammatory, detoxifying and immune-stimulating effects.
Over a thousand years ago, matcha came to Japan as an aid to meditation practice. During long hours of sitting, monks would drink matcha to remain alert yet calm. Modern science has recently confirmed the lessons of centuries of tradition. Matcha is rich in L-Theanine, a rare amino acid that actually promotes a state of relaxation and well-being by acting upon the brains functioning. While stress can induce beta waves an excited, more agitated state, L-Theanine creates alpha waves, which lead to a state of relaxed alertness. And while L-Theanine is common in all tea, matcha may contain up to five times more of this amino acid than common black and green teas.
There’s a right and wrong way to brew green tea. When brewing green tea, take a little extra care, as boiling water is bad for the precious catechins (tea’s healthy chemicals). Do bring your water to a boil, but let it rest for about ten minutes. Then, pour the water over the tea and brew for about one minute before serving. Of course, the brew time can be made shorter or longer, depending on your taste.
The traditional Japanese tea ceremony centers on the preparation, serving, and drinking of matcha as hot tea and embodies a meditative spiritual style. In modern times, matcha also has come to be used to flavor and dye foods such as mochi and soba noodles, green tea ice cream, matcha lattes, and a variety of Japanese wagashi confectionery. Matcha used in ceremonies is referred to as ceremonial-grade matcha, meaning that the matcha powder is of a high enough quality to be used in the tea ceremony. Lower quality matcha is referred to as culinary-grade matcha, but there is no standard industry definition or requirements for either.
Rooibos grades are largely related to the percentage "needle" or leaf to stem content in the mix. A higher leaf content results in a darker liquor, richer flavour and less "dusty" aftertaste. The high-grade rooibos is exported and does not reach local markets, with major consumers being the EU, particularly Germany, where it is used in creating flavoured blends for loose-leaf tea markets.
One-1/2 teaspoon serving of matcha, no more than once daily, is certainly a valuable addition to any diet, says Zeitlin. Like with another substance currently having a moment, turmeric, you can get your dose by eating or drinking it, though Zeitlin says drinking it as a tea, how it was initially intended, provides all the benefits without the added calories.

This tea is a rich source of antispasmodic agents, which can ease severe stomach cramps and abdominal pains. This is mainly due to the activation of K+ (potassium) ions in the body without antagonizing the activities of calcium, according to a report published in the Basic & Clinical Pharmacology & Toxicology. This can reduce the presence of hyperactivity in the gastrointestinal tract, thus preventing diarrhea and other intestinal issues.


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Premium grade: High-quality matcha green tea that contains the full nutritional content[citation needed] and uses tea leaves from the top of the tea plant. Price point (~$50–80 for 100g). Best for daily consumption and contains the full range of antioxidants, vitamins and minerals[citation needed]. Is characterized by a fresh, subtle flavour. Usually perfect for both new and everyday matcha drinkers alike.


I never told anyone this, and by now, you’re probably thinking I’m a fool. But can I just say that I actually thought if I followed the commenters (about how long to steep) that I’d be ok? Man, listen. The same thing happened again. Exactly as it happened before, except it actually made me vomit! Thank God ever since the first incident, I keep alcohol in my medicine cabinet and I always take my phone to the restroom. I sniffed it quick as I felt a blackout coming on. The smell allowed me to hang on to the edge of consciousness. However, with only enough strength to pull the Emergency Call screen up on my phone, I thought for sure that I was going to go out in the bathroom, Elvis Presely style. Was this my punishment for being so vain?
Along with caffeine, which gives green tea its characteristic taste, bitterness, and stimulating effect, green tea is also rich in a group of chemicals, called catechin polyphenols (commonly known as tannins, which contribute to bitter taste and astringency). These catechin polyphenols include catechin, epicatechin, epicatechin gallate (ECG), epigallocatechin gallate (EGCG), and various proanthocyanidins. They are also known as flavonoids and are very powerful antioxidants. Flavonoids, together with some amino acids like thiamine, are responsible for the potent flavor of green tea.
In response, the governor of Shizuoka Prefecture, Heita Kawakatsu, stated: "there is absolutely no problem when they [people] drink them because it will be diluted to about 10 becquerels per kilogram when they steep them even if the leaves have 1,000 becquerels per kilogram;" a statement backed by tests done in Shizuoka.[35] Japanese Minister for Consumer Affairs and Food Safety Renhō stated on 3 June 2011 that "there are cases in which aracha [whole leaves of Japanese green tea] are sold as furikake [condiments sprinkled on rice] and so on and they are eaten as they are, therefore we think that it is important to inspect tea leaves including aracha from the viewpoint of consumers' safety."[36]
In fact, the Japanese have spent the last 1,000 years refining the process of growing green tea and have perfected the art of producing Matcha. Drinking Matcha allows you to consume the entire leaf and unlock the full nutrient potential of green tea. Matcha has the highest antioxidant rating of all major superfoods and naturally comes with a perfect dose of caffeine for a clean and focused energy boost.
As an additional benefit, L-Theanine may help memory and learning and ability all the while inhibiting any possible side-effects from caffeine, a natural component of green tea. Therefore, a bowl of matcha promotes concentration and clarity of mind without any of the nervous energy found in coffee. Try matcha as a pick-me-up for the afternoon or anytime you need extra focus.
The alpha hydroxy acid and zinc in this red tea are very good for the skin. You can also try applying some rooibos tea powder directly to the skin to relieve acne, pimples, sunburn or related skin conditions. Alpha-hydroxy acids can reduce the signs of wrinkles and other premature aging symptoms but they are rarely found in natural products. They are found in chemical peels, which revitalize the skin and leave it fresh and invigorated with a healthy glow. However, there has been some controversy about commercial uses of alpha hydroxy acid, so it is always better to get it from a natural source, like red rooibos tea.
Steeping, or brewing, is the process of making tea from leaves and hot water, generally using 2 grams (0.071 oz) of tea per 100 millilitres (3.5 imp fl oz; 3.4 US fl oz) of water (H2O) or about 1 teaspoon of green tea per 150 ml cup. Steeping temperatures range from 61 °C (142 °F) to 87 °C (189 °F) and steeping times from 30 seconds to three minutes.
^ Jump up to: a b Johnson R, Bryant S, Huntley AL (December 2012). "Green tea and green tea catechin extracts: an overview of the clinical evidence". Maturitas (Review). 73 (4): 280–7. doi:10.1016/j.maturitas.2012.08.008. PMID 22986087. In conclusion, whilst there is a considerable body of evidence for green tea with some of it suggesting a positive effect, it is difficult to be definitive as to its health benefits.
For centuries, burdock has been used therapeutically in parts of Asia, Europe, and North America. A known diuretic, it stimulates digestion and can be used to treat kidney and liver ailments. Research has shown that compounds in the root contain antidiabetic and antioxidant qualities, and it also helps to promote blood circulation on the skin’s surface, which improves skin texture and helps to prevent eczema.
Several large, population-based studies show that people who regularly drink black or green tea may be less likely to have heart attacks and strokes. However, people who drink tea tend to be different from people who don't drink tea. "We can't quite disentangle whether it's their tea drinking or something else those people are doing that lowers their risk of cardiovascular disease," explains Dr. Sesso. "Some experts believe that tea may have cardiovascular benefits, but it's not considered a slam-dunk proposition."
So-called "detox" teas have been popular for years, primarily among people who frequent health-food stores, or consult with alternative practitioners. These days, though, they've become big business, and a handful of celebrities are touting their weight-loss benefits on social media. In a way, detox teas have become the liquid version of waist trainers–the before and after results are often dramatic, and their celeb backing generates buzz, but you may be wondering: Do they really work, and are they safe? Before you plunk down your hard-earned money and start sipping, here are five things you should know.
Another benefit of green tea it’s is lower in caffeine than most other teas, so you may be able to drink the five cups a day that lowered psychological stress in a large group of Japanese people in a recent study done at Sendai’s Tohoku University Graduate School of Medicine. The researchers didn’t identify any particular component of green tea that might have been soothing, but animal studies suggest that one compound, EGCC, had both sedative and hypnotic effects that tamp down the body’s production of stress chemicals.
Liver problems have been reported in a small number of people who took concentrated green tea extracts. Although the evidence that the green tea products caused the liver problems is not conclusive, experts suggest that concentrated green tea extracts be taken with food and that people discontinue use and consult a health care provider if they have a liver disorder or develop symptoms of liver trouble, such as abdominal pain, dark urine, or jaundice.
There are three main varieties of tea: green, black, and oolong. All three varieties are made from the leaves of the same species of plant called Camellia sinensis; the difference is in how the tea leaves are processed. Green tea is made from unfermented leaves, while oolong tea is made from partially fermented leaves and black tea is fully fermented.

Stone ground: Instead of being rolled, shaped, and dried like traditional green tea leaves, the leaves destined for matcha are laid flat to dry and become tencha, the leaves from which matcha is made. The tencha leaves are then stripped of their stems and veins. The remaining leaf material is ground in slow-turning stone mills, yielding a smooth green tea powder.
Matcha is a type of green tea made by taking young tea leaves and grinding them into a bright green powder. The powder is then whisked with hot water. This is different from regular green tea, where the leaves are infused in water, then removed. Drinking brewed green tea “is a bit like boiling spinach, throwing away the spinach and just drinking the water,” says Louise Cheadle, co-author of The Book of Matcha and co-owner of the tea company teapigs. “You will get some of the nutrients, but you’re throwing away the best bit.” With matcha, you’re drinking the whole tea leaves.
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