[wcc_switcher]

Green Tea (Camellia sinensis) Herbal Monograph

Green Tea and Teapot
Easy Print
  • 1 year ago
  • 7Minutes
  • 1608Words
  • 603Views

Description

Tea is one of the most widely consumed beverages in the world today, second only to water, and its medicinal properties have been widely explored. The tea plant, Camellia sinensis, is a member of the Theaceae family.

Black, oolong, and green tea are all produced from its leaves. It is an evergreen shrub or tree and can grow to heights of 30 feet, but is usually pruned to 2-5 feet for cultivation.

Traditional Use
In traditional Chinese and Indian medicine, practitioners used it as a stimulant, a diuretic to reduce fluid build retention, an astringent to control bleeding, and to improve heart health. Other traditional uses include reducing gas, balancing blood sugar and improving digestion.

Modern Use
Green tea is produced from steaming fresh leaves at high temperatures, thereby inactivating the oxidizing enzymes and leaving the polyphenol content intact. Green tea has become the raw material for extracts used in various beverages, dietary supplements, and cosmetic items.

Unlike black tea and oolong tea production does not involve oxidation of young tea leaves. The secret of Green tea lies in the fact it is rich in catechin polyphenols, particularly epigallocatechin gallate (EGCG). EGCG is a very powerful antioxidant with many known health benefits, and how these antioxidants are preserved is by steaming the tea leaves (which creates Green and White teas) instead of fermenting the leaves (which produces black and oolong teas).

Active constituents
The polyphenols found in tea are more commonly known as flavanols or catechins and comprise 30-40% of the extractable solids of dried green tea leaves. The main catechins are epicatechin, epicatechin-3-gallate, epigallocatechin, and epigallocatechin-3-gallate (EGCG), with the latter being the highest in concentration.

Pharmacology
Tea catechins are absorbed through the oral mucosa, which may assist in preventing oral and esophageal cancers. Levels of EGCG are higher in saliva than in blood after ingestion of a single cup of tea. Drinking tea slowly delivers high concentrations of catechins to the oral cavity and then the esophagus, whereas tea extract in solid dosage forms results in no detectable salivary catechin level (11)

By inhibiting catechol O-methyltransferase (COMT), the enzyme that degrades norepinephrine, tea catechins prolong the life of norepinephrine in the synaptic cleft, while tea alkaloids inhibit phosphodiesterases, which prolongs the life of cAMP in the cell, resulting in an increased, and more sustained effect, of norepinephrine on thermogenesis (12)

See a full analysis of green tea catechins here

Clinical Studies:

  • Green tea polyphenols have demonstrated significant antioxidant, anticarcinogenic, anti-inflammatory, thermogenic, probiotic, and antimicrobial properties in numerous human, animal, and in vitro studies. (5)
  • Detoxification – Green tea polyphenols stimulate the activity of liver detoxification enzymes, thus promoting detoxification of foreign chemical compounds. They are also capable of chelating metal ions that could generate oxygen free radicals. (6)
  • High cholesterol – Research shows that green tea lowers total cholesterol and raises HDL (good) cholesterol in both humans. One population-based clinical study found that men who drink green tea are more likely to have lower total cholesterol than those who do not drink green tea. In another small study of male smokers, researchers found that green tea significantly reduced blood levels of harmful LDL cholesterol. (1, 2, 13))
  • Diabetes – Green tea has been used traditionally to control blood sugar levels. Animal studies suggest that green tea may help prevent the development of type 1 diabetes and slow the progression once it has developed. In people with type 1 diabetes, their bodies make little or no insulin, which helps convert glucose or sugar into energy. Green tea may help regulate glucose in the body. (3)
  • Weight loss – Clinical studies suggest that green tea extract may boost metabolism and help burn fat. One study found that the combination of green tea and caffeine improved weight loss and maintenance in people who were overweight and moderately obese. Some researchers think that substances in green tea known as catechins are responsible for its fat-burning effect. (4)  A human study of green tea extract containing 90 mg EGCG taken three times daily concluded that men taking the extract burned 266 more calories per day than did those in the placebo group and that green tea extract’s thermogenic effects may play a role in controlling obesity (9)  Research on green tea’s thermogenic properties indicates a synergistic interaction between its caffeine content and catechin polyphenols may result in prolonged stimulation of thermogenesis. (7)  Studies have also shown green tea extracts are capable of reducing fat digestion by inhibiting digestive enzymes. (8)
  • Digestive balance – A small study in Japan demonstrated a special green tea catechin preparation (30.5% EGCG) was able to positively affect intestinal dysbiosis in nursing home patients by raising levels of Lactobacilli and Bifidobacteria while lowering levels of Enterobacteriaceae, Bacteroidaceae, and eubacteria. Levels of pathogenic bacterial metabolites were also decreased. (10)

Dosage forms
Infusion: 150–250 ml boiling water poured over 1.0–2.5 g finely cut dried leaf, steeped 3–5 min. for use as a stimulant (alkaloids extract rapidly). Steeped at least 10 min. for use in the treatment of diarrhea (catechins take longer to extract). Drunk several times daily. Tea should be steeped for 15–20 min. in order to maximize the yield of catechins, though this will make the tea taste bitter. At least 1 cup drunk daily for antioxidant effect.

Powder: 8 capsules (250 mg each) daily with meals to treat obesity.

Extract: two, 250 mg capsules, 3 times daily with meals for weight control [standardized to 25% catechins].

Conclusion
There is both a long tradition and numerous clinical studies supporting the use of green tea as a health-promoting product. The traditional and clinical evidence is overwhelming and consistent, suggesting green tea should have a place among the great herbal medicines.

I think that its use in liver detoxification, weight management, metabolic energy promotion, blood sugar balance, cholesterol control, and digestive support make it a key part of any detox program or weight management program and that’s why we have included it our Ultimate Herbal Health Program.

You can find Green tea extract in these Ultimate Herbal Health products:

Brett Elliott ®

More To Explore

Cabbage Health Benefits

Cabbage (Brassica oleracea) Health Benfits

2 days ago4Minutes1252Words8ViewsCabbage, a cruciferous vegetable, offers numerous gut health benefits, largely due to its rich nutritional profile. It provides dietary fiber, antioxidants, and important vitamins that contribute to maintaining a healthy digestive system. Here’s an overview of the key gut health benefits of cabbage, along with the role of glutamine: 1. Rich in Dietary Fiber Cabbage is an excellent source of both soluble and insoluble fiber. Fiber plays a crucial role in supporting gut health by: Promoting healthy digestion: Insoluble fiber helps bulk up stool and move it through the intestines, preventing constipation and ensuring regular bowel movements. Supporting beneficial gut bacteria: Soluble fiber is fermented by gut bacteria, which produces short-chain fatty acids (SCFAs) like butyrate. These SCFAs fuel the cells of the colon, promoting a healthy gut lining and reducing inflammation. 2. Antioxidants and Anti-inflammatory Properties Cabbage contains antioxidants such as vitamin C, beta-carotene, and flavonoids, which help reduce oxidative stress in the gut. This is important because chronic inflammation in the gut can lead to digestive disorders like IBS (Irritable Bowel Syndrome), Crohn’s disease, and ulcerative colitis. Cabbage’s anti-inflammatory properties help soothe the gut lining and maintain a healthy gut environment. 3. Supports Gut Lining and Mucosal Health Cabbage, especially when consumed in its raw form, contains glutamine, an amino acid that has been shown to support gut health. Glutamine is essential for maintaining the integrity of the intestinal lining. It helps to: Repair the gut lining: Glutamine supports the epithelial cells of the intestines, aiding in their repair and regeneration. This is especially important for those with leaky gut syndrome or those suffering from inflammation-related digestive disorders. Enhance gut permeability: Glutamine aids in maintaining the balance of the gut’s permeability, ensuring that nutrients pass through properly while preventing harmful substances from entering the bloodstream. 4. Helps in Digestive Enzyme Production Cabbage contains a significant amount of vitamin U (also known as S-methylmethionine), which can help boost the production of digestive enzymes. These enzymes aid in breaking down food and absorbing nutrients, which is vital for optimal digestive health. 5. Supports Detoxification Cabbage, particularly the variety known as sauerkraut, supports detoxification through its high content of glucosinolate compounds. These compounds help activate detoxifying enzymes in the liver, which supports the overall health of the digestive system by helping the body eliminate waste more efficiently. Role of Glutamine in Gut Health from Cabbage: Cabbage as a Glutamine Source: While glutamine is found in various foods, including meat, fish, and dairy, cabbage is one of the plant-based sources that can contribute to its intake. Glutamine in cabbage supports gut cells and helps to maintain a healthy mucosal layer in the intestines. This, in turn, protects the gut from irritants and helps heal the gut lining after it has been damaged by inflammation or stress. Intestinal Health: Glutamine is the preferred fuel for intestinal cells (enterocytes), which helps maintain the integrity of the gut barrier. This function is critical for individuals suffering from gut disorders like IBS, Crohn’s disease, or ulcerative colitis, as glutamine helps reduce gut permeability and improve overall digestive function. Conclusion Including cabbage in your diet, whether raw, cooked, or fermented, offers numerous benefits for gut health. It provides dietary fiber, antioxidants, and glutamine, which help support healthy digestion, reduce inflammation, repair the gut lining, and maintain optimal gut barrier function. This makes cabbage a powerful ally for anyone looking to improve their digestive health naturally. Would you like more information on how to incorporate cabbage into your diet for gut health, or perhaps explore additional glutamine-rich foods? Try this Recipe:Mung Bean Coleslaw 10% Off BodiClenz – Ultimate Herbal DETOX Drink $152.10 – $259.00 View Info 10% Off Ultimate Herbal DETOX Body Cleanse Program $195.75 – $197.10 View Info Digezaid Digestive Support 120 Capsules $59.00 View Info 10% Off BodiTune Detox n Slim 500g or 1kg Pot $116.10 – $197.10 View Info No products found

Using Heat To Encourage Detoxification

Super Hot Winter Detox

The balance between our inner and outer environments play a major role when considering health from the holisitc standpoint, and can be why we become more susceptible to certain ailments at different times of year.
Let’s explore some of the key reasons to use heat as part of a mid-winter detox.