"Tea is a good source of compounds known as catechins and epicatechins, which are thought to be responsible for tea's beneficial health effects," says Dr. Howard Sesso, associate professor of medicine at Harvard Medical School and associate epidemiologist at Brigham and Women's Hospital. These compounds belong to a group of plant chemicals called flavonoids. Research suggests that flavonoids help quell inflammation, and that in turn may reduce plaque buildup inside arteries. Green tea has slightly higher amounts of these chemicals than black tea. Both black and green teas also contain modest amounts of caffeine, ranging from about 20 to 45 milligrams per 8-ounce cup. That's roughly half the amount of caffeine in the same amount of coffee.
Simply stated, tea detoxes claim to rid your body of the toxins caused by a build-up of unhealthy foods, alcohol, and a number of other things your body doesn’t use to properly function. The teas are mixtures of various ingredients (green tea, matcha, oolong, goji berries, etc.), all with impressive health benefits, and the point is that the tea provides you with sustainable energy while subsequently eliminating toxins from your body. Most teas are to be consumed at least once a day, and some are accompanied by an additional colon cleanser.
Green tea can help you lose weight. Several studies have suggested that the flavonoids and caffeine in green tea can help elevate metabolic rate, increase fat oxidation and even improve insulin activity. One study showed that those who consumed green tea and caffeine lost an average of 2.9 pounds during a 12-week period, while sticking to their regular diet. Another study suggested the increase in calorie output was equal to about 100 calories over a 24-hour period.
The reason that green tea has more health benefits attached to it than black tea is due to the processing. Black tea is processed in a way that allows for fermentation whereas green tea’s processing avoids the fermentation process. As a result, green tea retains maximum amount of antioxidants and poly-phenols the substances that give green tea its many benefits.
Rooibos tea is anti-inflammatory in nature, which means that it reduces blood pressure and scavenges free radicals like other antioxidants. Quercetin, another powerful antioxidant found in rooibos tea, has been linked to preventing a wide variety of heart conditions. It promotes an increase in HDL cholesterol (good cholesterol) and inhibits the LDL cholesterol (bad cholesterol) from binding to the walls of arteries and blood vessels.