Pour ceux qui ne comprennent toujours pas l'utilité de la vitamine C, voici un très bon texte mettant en relation cancer et vit C
Guenael E. a écrit:médecin, biologiste, aventurier, écologiste .. secrétaire d'Etat .. député européen .. chercheur au musée océanographique
Sébastien a écrit:Pour ceux qui ne comprennent toujours pas l'utilité de la vitamine C, voici un très bon texte mettant en relation
Lanvin a écrit:http://www.quackwatch.org/01QuackeryRelatedTopics/Cancer/c.html
Lanvin a écrit:http://www.quackwatch.org/01QuackeryRelatedTopics/pauling.html
1) la diarhée : conséquence naturelle de la tolérance intestinale, rien de méchant
2) calcul rénaux : JAMAIS prouvés
Les dosages utilisées dans ces études
Les données récentes montrent que ça marche à condition de faire des IV
Le texte part sur de mauvaises bases ...
Most cancer specialists and journal editors are extremely reluctant to accept this type of study for evaluating the validity of contemporary cancer therapy, primarily because bias may occur in selecting controls[...]
In 1982, William D. DeWys, M.D., chief of the clinical investigations branch of the National Cancer Institute's cancer therapy program, pointed out that the vitamin C and control groups had not been properly matched [4]. First he observed that no data had been published to demonstrate that the patients had been matched by stage of their disease, functional ability, weight loss, and sites of metastasis, all of which are important judging the stage of the disease. Then he pointed out that Cameron's patients began getting vitamin C when Cameron judged them "untreatable" and their subsequent survival was compared to that of the control patients from the time they had been labeled "untreatable."
DeWys reasoned that if the two groups were comparable, the average time from the initial diagnosis to "untreatable" status should be similar for both groups. But they were not. He concluded that many of Cameron's patients had been labeled untreatable earlier in the course of their disease and would therefore be expected to live longer. DeWys also noted that more than 20% of the patients in the control group had died within a few days of being labeled untreatable, whereas none of Cameron's patients had died. This, too, suggested that Cameron's patients had had less advanced disease when they were labeled untreatable.
The largest clinical trials, involving thousands of volunteers, were directed by Dr. Terence Anderson, professor of epidemiology at the University of Toronto [6-9]. Taken together, his studies suggest that extra vitamin C may slightly reduce the severity of colds, but it is not necessary to take the high doses suggested by Pauling to achieve this result. Nor is there anything to be gained by taking vitamin C supplements year-round in the hope of preventing colds.
Pauling criticized the first study, claiming that chemotherapeutic agents might have suppressed the patients' immune systems so that vitamin C couldn't work [17]. But his 1976 report on Cameron's work stated clearly that: "All patients are treated initially in a perfectly conventional way, by operation, use of radiotherapy, and the administration of hormones and cytotoxic substances." And during a subsequent talk at the University of Arizona, he stated that vitamin C therapy could be used along with all conventional modalities [18]. The participants in the 1983 study had not undergone conventional treatment, but Pauling dismissed its results anyway.
A dispute between Pauling and Arthur Robinson, Ph.D., gives additional evidence of Pauling's defense of vitamin C megadosage was less than honest. Robinson, a former student and long-time associate of Pauling, helped found the institute and became its first president. According to an investigative report by James Lowell, Ph.D., in Nutrition Forum newsletter, Robinson's own research led him to conclude in 1978 that the high doses (5-10 grams per day) of vitamin C being recommended by Pauling might actually promote some types of cancer in mice [18]. Robinson told Lowell, for example, that animals fed quantities equivalent to Pauling's recommendations contracted skin cancer almost twice as frequently as the control group and that only doses of vitamin C that were nearly lethal had any protective effect. Shortly after reporting this to Pauling, Robinson was asked to resign from the institute, his experimental animals were killed, his scientific data were impounded, and some of the previous research results were destroyed. Pauling also declared publicly that Robinson's research was "amateurish" and inadequate. Robinson responded by suing the Institute and its trustees. In 1983, the suit was settled out of court for $575,000. In an interview quoted in Nature, Pauling said that the settlement "represented no more than compensation for loss of office and the cost of Robinson's legal fees." However, the court-approved agreement states that $425,000 of the settlement was for slander and libel.
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