Tea isn’t just a comforting and pleasant beverage, it also has remarkable healing properties—so much so that it’s deemed a sort of “wonder drink” that may be even healthier than drinking water. Drinking tea can lead to a healthier, longer life!
The main health-promoting substances in tea are antioxidants – Polyphenols, catechins and epicatechins found in tea leaves, and Flavonoids, flavones, and phytoestrogens found in many teas and herbal preparations.
High levels of antioxidants in tea, especially green tea, have been shown to prevent cancer, heart disease, stroke, atherosclerosis and brain diseases like Parkinson’s and Alzheimer’s. They also treat inflammation, boost the immune system, metabolism, oral and eye health,
Continue reading below to learn more, and go to our Tea Talk Blog to learn about why Tea is Healthier than water, as well as the different types of teas and their unique health benefits!
More about Tea, antioxidants, free radicals, and oxidative stress:
Tea, especially green tea, contains high levels of antioxidants that have been shown to prevent or slow damage to cells caused by disease producing free radicals, unstable molecules that the body produces as a reaction to environmental and other pressures.
Factors that increase the production of free radicals in the body can be internal, such as inflammation, or external, for example, pollution, UV exposure, and cigarette smoke. High levels of free radical can lead to oxidative stress.
Oxidative stress has been linked to heart disease, cancer, arthritis, stroke, atherosclerosis, immune deficiency, emphysema, Parkinson’s disease, and other inflammatory or ischemic conditions antioxidant supplements may help reduce vision loss due to age-related macular degeneration in older people.
Why Tea Is Healthier Than Water
Not Just for Pleasure: The Many Health Benefits of Tea
Tea is the second most widely consumed beverage in the world, after water. That’s because it’s so versatile: You can drink it iced or hot, and there are enough varieties of tea to suit just about any palate (there are over 1,500 types of tea—not including herbal teas).
People have been drinking tea for centuries also because of its health effects. Much research suggests drinking tea—particularly green tea—can fight diseases and even lengthen life. This is due to tea’s high concentration of antioxidants called polyphenols, which may contribute to the prevention of cancer, osteoporosis, and cardiovascular diseases. While polyphenols are also found in abundance in fruits, vegetables, and grains—and also coffee in even higher amounts—tea is especially and uniquely rich in particular types of polyphenols called catechins (specifically, EGCG) that may be the most powerful ones of all.
The American Cancer Society explains:
EGCG may help cause certain types of cancer cells to die in much the same way that normal cells do. This effect is important because cancer cells are different from normal cells in that they do not die when they should—they continue to grow and spread.
Although the ACS says more clinical trials are needed to support claims that green tea can prevent or treat any specific types of cancer, it notes the many laboratory studies demonstrating green tea’s protective effects against cancer cells. One study, for example, found EGCG to suppress lung cancer cell growth and another found that it inhibits breast cancer tumors. A meta-analysis of 13 studies indicates women who drink green tea have a lower risk of developing breast cancer than non-green-tea drinkers. Like most scientific research, however, there’s other conflicting results suggesting black and green tea might not contribute significantly to breast cancer risk—so you probably shouldn’t drink tea for the sole purpose of preventing cancer. That’s okay, because there are lots of other positive health associations with tea.
Protection Against Heart Diseases and High Blood Pressure
A study of 40,530 people in Japan, where green tea is widely consumed, found drinking green tea significantly lowered the risk of dying from cardiovascular disease. (31% lower risk in women, and 22% lower risk in men.) The risk of dying from stroke was even lower: 62% lower in women and 42% lower in men. The catechins in green tea are believed to inhibit the production of free radicals in the lining of the arteries and also help prevent the formation of blood clots.
Regular consumption of green or oolong tea (for at least one year) also has been shown to lower the risk of developing hypertension by 46% for those who drank up to 2.5 cups a day and 65% less for those who drank more than 2.5 cups.
A review, published in the Journal of the American College of Nutrition, concludes that “green tea and EGCG can be regarded as food components useful for the maintenance of cardiovascular and metabolic health.”
Lower Risk of Death from All Causes
The Japanese cohort study mentioned above examined the relationship between green tea drinking and death from all causes. The researchers followed the Japanese adults (ages 40 to 79) for up to 11 years and compared those who drank less than one cup of green tea a day to those drinking five or more a day.
The results? Drinking green tea was associated with a 23% lower risk of dying from any cause in women and 12% lower risk in men.
Drinking tea can contribute to both relaxation and concentration. As Tea Class explains:
L-theanine is an amino acid that occurs naturally in the Camellia Sinensis plant. In fact, unless you take an artificially manufactured dietary supplement, tea is the ONLY way to get L-theanine in your diet. This powerful amino acid boosts alpha wave activity in our brains, which promotes a state of relaxed concentration. Think “quiet alertness”. The calming effects of L-theanine actually counteract the extreme highs and jitteriness that can result from excessive Caffeine intake.
As with almost all other essential elements in the leaf, L-theanine is most highly concentrated in the newest growth. A high quality loose leaf tea will contain the most L-theanine, and the very highest levels are usually found in green and white teas.
And Lots, Lots More
Studies have also associated drinking green tea with lower LDL or “bad” cholesterol and reduced body fat, inhibition of the flu virus, and even less dental plaque. The book Green Tea by Nadine Taylor also cites these benefits:
Keeping blood sugar at moderate levels
Fighting food-borne bacteria
Enhancing immune system function
Promoting “friendly” bacteria in the intestines and encouraging bowel regularity
Assisting in weight loss by blocking the breakdown of starch
Maintaining the body’s fluid balance
No other substance on the face of the earth, including the most potent drug, can claim such wide-ranging and powerful health benefits, and all without a single side effect.
Well, some side effects have been noted with drinking too much green tea extract or supplements (not the drink itself), and pregnant women might want to avoid large amounts of green tea as well.
It’s true that tea contains caffeine, which affects everyone differently, but tea generally contains less caffeine than coffee, and the caffeine in tea is metabolized more slowly, so you can drink more cups all day long without crashing.