Showing posts with label ΓΡΙΠΗ ΤΩΝ ΧΟΙΡΩΝ. Show all posts
Showing posts with label ΓΡΙΠΗ ΤΩΝ ΧΟΙΡΩΝ. Show all posts

2.03.2010

Vitamin C: Do High Doses Prevent Colds?


Photos from my garden.













Charles W. Marshall, Ph.D. (Edited by Stephen Barrett, M.D)

all in site : http://www.quackwatch.org....



Few things have stirred the imagination and hopes of the public in matters of nutrition or vexed nutrition scientists as much as Linus Pauling's 1970 book, Vitamin C and the Common Cold. The book's main claim was that taking 1 gram (1,000 mg) of vitami
n C daily would reduce the incidence of colds by 45% for most people, but that some persons might need much larger amounts. It recommended that if symptoms of a cold do start, you should take 500 or 1,000 mg every hour for several hours -- or 4 to 10 grams daily if symptoms don't disappear with smaller amounts. Without question, publication of this book, combined with Pauling's reputation as a Nobel Prize-winning scientist, has made vitamin C a best seller. When his theory was announced, millions of Americans rushed to try it for themselves. The second edition of the book, issued in 1976 as Vitamin C, the Common Cold and the Flu, suggested even higher dosages .

Vitamin C and the Co
mmon Cold also suggested that most people need a daily vitamin C intake of 2,300 mg or more for "optimum" health and to meet stresses, including infections. In a subsequent book, How to Live Longer and Feel Better, Pauling stated that individual biochemical variability is so great that optimum intake may may be as great as from 250 mg to 20 grams or more per day .

Many concerned persons have wondered whether Pauling's advice was prudent, and millions have experimented upon themselves to see whether they could tell. Pauling himself reportedly took 12,000 mg daily and raised it to 40,000 mg when symptoms of a cold appeared! Pauling apparently adapted to such dosage, but most people would suffer chronic diarrhea and the risk of
kidney stones. Also, the vast majority of reputable medical and nutritional scientists strongly disagree with him. Before looking at the experimental evidence, let's discuss how scientists form their opinions.
How Scientific Facts Are Determined

1.10.2010

A polyphenol rich plant extract from Cistus incanus exerts a potent anti-influenza activity against avian and human influenza subtypes.


Cistus Incanus


Infections with influenza A viruses still pose a major threat to humans and several animal species. The occurrence of highly pathogenic avian influenza viruses of the H5N1 subtype capable to infect and kill humans highlights the urgent need for new and efficient countermeasures against this viral disease. Here we demonstrate that a polyphenol rich extract (CYSTUS052) from the Mediterranean plant Cistus incanus exerts a potent anti-influenza virus activity in A549 or MDCK cell cultures infected with prototype avian and human influenza strains of different subtypes. CYSTUS052 treatment resulted in a reduction of progeny virus titers of up to two logs. At the effective dose of 50 microg/ml the extract did not exhibit apparent harming effects on cell viability, metabolism or proliferation, which is consistent with the fact that these plant extracts are already used in traditional medicine in southern Europe for centuries without any reported complications. Viruses did not develop resistance to CYSTUS052 when compared to amantadine that resulted in the generation of resistant variants after only a few passages. On a molecular basis the protective effect of CYSTUS052 appears to be mainly due to binding of the polymeric polyphenol components of the extract to the virus surface, thereby inhibiting binding of the hemagglutinin to cellular receptors. Thus, a local application of CYSTUS052 at the viral entry routes may be a promising approach that may help to protect from influenza virus infections.

12.18.2009

12.15.2009

CYSTUS052 may be an effective adjuvant in respiratory tract infections


SITE....

This article aimed to investigate the clinical effect of a Cistus spp. (rock rose) extract (CYSTUS052) in comparison with extract made from Camellia sinensis (green tea) on 300 patients with infections of the upper respiratory tract. It observed a total of 300 patients (277 completers) treated with CYSTUS052 given in lozenges compared with treatment with an extract of C. sinensis. The patients scored the subjective severity of target symptoms using a predefined scale. The score of subjective symptoms decreased over the course of treatment with CYSTUS052, whereas treatment with C. sinensis resulted in a less significant decrease in symptoms.

Kalus U, Kiesewetter H, Radtke H. Effect of CYSTUS052® and green tea on subjective symptoms in patients with infection of the upper respiratory tract

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