Zen Buddhism and the Chinese methods of preparing powdered tea were brought to Japan in 1191 by the monk Eisai. In Japan it became an important item at Zen monasteries and from the fourteenth through to the sixteenth centuries was highly appreciated by members of the upper echelons of society. Although powdered tea has not been popular in China for some time, there is now a global resurgence in the consumption of Matcha tea, including in China.
Both nutritionists we spoke to agree that drinking tea when you wake up and before bed can help your system rev up and calm down, depending on which variety you choose. If you’re a tea fanatic, work in a few cups throughout the day: Unless you’re sensitive to caffeine, you can probably handle five to seven cups a day without any negative side effects, says Lagano.
A great deal of evidence from randomized controlled trials suggests that consumption of flavan-3-ols and anthocyanidin antioxidants, the types found in green tea, is beneficial for metabolic and cardiovascular health. (5) When it comes to preventing many of the risk factors for heart disease, such as having high blood pressure or cholesterol levels, some evidence shows that green tea contains 10 beta-blocking compounds, seven calcium channel blockers and 16 diuretic compounds. It also has more ACE-inhibiting properties than many other plant foods that are commonly consumed, which helps increase the amount of blood your heart pumps and lowers blood pressure.
Rooibos tea is also known for its beneficial effects on those suffering from colic or diabetes. It also has the ability to cure headaches, insomnia, asthma, eczema, bone weakness, hypertension, allergies, and premature aging. This tea is absolutely free from caffeine content and is also low in tannins. Drinking rooibos tea can further ease severe stomach cramps and boost the immune system.
It depends not only on the processing method the tea producers use, but also on the cultivation practices the tea growers use. What time of year is the tea plucked? How is the plant pruned? What parts of the plant are plucked? Are the plants treated with chemicals or are they organically grown? What kind of heat is applied to the tea leaves to stop oxidation? How are the tea leaves shaped, rolled and dried? Are the leaves left whole or cut in smaller pieces?
Drinking green tea and matcha are considered healthy and safe, but people sensitive to caffeine should be aware that both contain decent amounts of the stimulant. In 2016, the World Health Organization also linked the consumption of hot drinks, like coffee and tea, to a higher risk of cancer of the esophagus. However, the risk is much lower than the risk of cancer from other causes, like smoking.
An animal study published in 2009 in “Phytomedicine” found that green rooibos tea helped regulate glucose metabolism, preventing increases in fasting blood glucose levels during the course of the five-week study. This effect is a result of aspalathin, a compound found in green rooibos. Poor glucose tolerance and high fasting glucose levels are signs of type-2 diabetes and are common in obesity. The study suggests rooibos tea may help keep blood glucose levels in check, preventing sharp spikes and falls that can trigger symptoms of hunger and possibly leading to lower calorie consumption.
In 1904, Benjamin Ginsberg ran a variety of experiments at Rondegat Farm, finally curing rooibos. He simulated the traditional Chinese method of making Keemun by fermenting the tea in barrels. The major hurdle in growing rooibos commercially was that farmers could not germinate the rooibos seeds. The seeds were hard to find and impossible to germinate commercially.
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 comes from Camellia sinensis leaves that are immediately steamed or pan-fired rather than being exposed to air so that no oxidation occurs. This special handling makes for a more delicate brew that is typically lower in caffeine than black and Oolong teas. Although amounts vary, green teas are highest in polyphenols known as EGCG, which is why so many make it part of their healthy lifestyle.
The polyphenols in green tea, which include multiple subcategories of polyphenols like flavonoids and catechins, can reduce the formation of free radicals in the body, protecting cells, molecules, and other structures from damage. One of the most active and powerful antioxidant polyphenols in green tea is epigallocatechin-3-gallate (EGCG). EGCG has been studied to treat a wide variety of diseases and may be one of the main reasons green tea has such powerful medicinal properties. Beyond EGCG, other polyphenol catechins in green tea include catechin, gallocatechin, epicatechin, epigallocatechin, and epicatechin gallate.
It’s become such a fashionable beverage that, last summer, the New York Post ran a story about how Victoria’s Secret models were flocking to Cha Cha Matcha, a hipster spot fluent in the preparation of various matcha-based miracle potions. A search for where to get “matcha” in New York, New York on Yelp yielded some 1400 plus results. Even mass market coffee purveyors like Starbucks have made matcha their mantra, with a vast range of offerings to cash in on the craze.