Green tea may have a therapeutic and positive effect in reduced risk and treatment of acute and chronic constipation, some scientists suggested.
Constipation is a condition of hard to pass stool or not passing stool frequently, affecting 1/6 people over 12 years old in Canada.
In the examine the effects of Pu-erh tea on constipation in ICR mice induced by carbon injection researchers found that mice in control group without administrated Pu-erh green tea expressed a significant weight loss, food and water intake in compared to experiment group.
In compared to first black stool time of normal group of 90 min, control (injection of carbon) of 221 min and bisacodyl treatment group (100 mg/kg in control group) of 118 min, mice in control group treated with green tea at doses of 200, 400 and 800 mg/kg showed an improved stool passing time of 178, 155 and 139 min, respectively.
Importantly, the application of green tea Pu-erh also expressed a strong increase of serum levels of
1. Motilin (MTL) in the blood stream in stimulated the contraction of the fundus and antrum and accelerated gastric emptying;
2. Gastrin, a peptide hormone in the stimulated secretion of gastric acid (HCl) by the parietal cells of the stomach in improved gastric motility;
3. Endothelin (ET), a peptide hormone with function in the contraction of rat stomach strips, rat colon, and guinea pig ileum;
4. Acetylcholine enzyme (AchE) chemical released by motor neurons of the nervous system in order to activate muscles;
5. Substance P (SP) an amino-acids peptide in the induction of rapid contraction of the smooth muscle of the digestive tract and
6. Vasoactive intestinal peptide (VIP), a potent vasodilator, in regulated smooth muscle activity and blood flow in the gastrointestinal tract.
And the decrease of somatostatin (SS) hormone in reduced gastric acid secretion and emission of gastrointestinal hormones, such as gastrin.
Additionally, in comparison of 2 types of commonly used osmotic laxative polyethylene glycol (PEG), namely PEG with electrolytes mixed with water and PEG without electrolytes mixed with tea or other sources such as juice and coffee for taste, researchers at the Pirkanmaan Erikoislääkäripalvelu conducted a randomized, double-blind, parallel-group study at ten private assisted-living facilities or communal nursing homes in Finland. Selected patients were.required to have used isotonic PEG at a stable dose without any other treatment for constipation (except for Plantago ovata seeds) for at least 2 weeks prior to a run-in period and randomly assigned receive hypotonic PEG or continued to receive isotonic PEG, both dissolved in water, 12 g once or twice daily or once every other day, for 4 weeks, found that the mean (SD) weekly stool frequencies are not different in both hypotonic and isotonic PEG groups, although soft or normal stool consistency of 70% was higher in the hypotonic PEG group in compared to 52% in isotonic PEG group.
Moreover, both products are considered safe without inducing stool straining or gastrointestinal symptoms, although the level of sodium was statistically and significantly lower in the hypotonic PEG group at the last day of testing of the study in compared to another group.
Dr. Seinelä L, after taking into account other co-factors said, "Both treatments appear safe, well-tolerated and, when dissolved in water, well accepted by the majority of the patients. When desired, switching from isotonic to hypotonic PEG can safely take place in elderly individuals without compromising efficacy".
However, a total of 1,705 female Japanese dietetic students aged 18-20 years and free of current disease studies suggested the intake of tea is associated to constipation(3) without mentioning types of tea used in the surveys.
According to the theory of traditional Chinese medicine, green tea is yin in nature with function in relieving indigestion and smoothed bowel movements through promotion of fluid production(4) and constipation is a result of overexpression of yang or deficiency of yin, therefore, we do believe, the tea mentioned in the study were red, black or herbal tea with yang sufficiency.
Taken together, green tea may be considered as a functional food for the prevention and treatment of constipation. Intake of green tea extracts should be taken with exceptional care due to toxicity reported in the medical literature.
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Author Biography
Kyle J. Norton (Scholar, Master of Nutrition, All right reserved)
Health article writer and researcher; Over 10.000 articles and research papers have been written and published online, including worldwide health, ezine articles, article base, health blogs, self-growth, best before it's news, the karate GB daily, etc.,.
Named TOP 50 MEDICAL ESSAYS FOR ARTISTS & AUTHORS TO READ by Disilgold.com Named 50 of the best health Tweeters Canada - Huffington Post
Nominated for shorty award over last 4 years
Some articles have been used as references in medical research, such as international journal Pharma and Bioscience, ISSN 0975-6299.
Sources
(1) Component analysis of Pu-erh and its anti-constipation effects by Li G1, Wang Q1, Qian Y1, Zhou Y1, Wang R1, Zhao X1.(PubMed)
(2) Comparison of polyethylene glycol with and without electrolytes in the treatment of constipation in elderly institutionalized patients: a randomized, double-blind, parallel-group study by Seinelä L1, Sairanen U, Laine T, Kurl S, Pettersson T, Happonen P.(PubMed)
(3) Dietary intake in relation to self-reported constipation among Japanese women aged 18-20 years by Murakami K1, Okubo H, Sasaki S.(PubMed)
(4) History of Green Tea by Tao de Wan
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