LYCOS RETRIEVER
Vitamin C: Cancers
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Incidentally, excreted vitamin C is not a complete loss. According to Dr. Pauling, it protects against urinary tract infections. Large doses can have a laxative effect causing looseness of the bowel. This is said to be greater when the vitamin is taken on an empty stomach. Dr. Pauling recommended using this laxative effect to reduce chances of developing colon cancer. Additionally, the vitamin appears to be most effective in fighting disease when the dose is close to the bowel tolerance limit.
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When taken in large doses, vitamin C causes diarrhea in healthy subjects. In one trial, doses up to 6 grams of ascorbic acid were given to 29 infants, 93 children of preschool and school age, and 20 adults for more than 1400 days. With the higher doses, toxic manifestations were observed in five adults and four infants. The signs and symptoms in adults were nausea, vomiting, diarrhea, flushing of the face, headache, fatigue and disturbed sleep. The main toxic reactions in the infants were skin rashes.[80] On the other hand, Cathcart has demonstrated that sick patients, with influenza and cancer for example, do not suffer any adverse effects whatsoever until the dosage is raised to fairly high levels such as 100 grams or higher.
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Results from a Dutch study published in 1997 suggest a weak protective effect of vitamin C against lung cancer. Researchers obtained dietary information from 561 men from the town of Zutphen, in 1960, 1965, and 1970. During the period from 1971 to 1990, 54 new cases of lung cancer were identified and analysis of the diets of the men showed an increased risk of lung cancer in those with lower fruit and vegetable and vitamin C intakes.18
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Following is a review of the scientific literature as it pertains to the impact of vitamin C on cancer. The questions, "What works?" and "How might it be applied?" were the motivational ones behind this review. As this one does, each review will include only well-designed studies from peer-reviewed journals. Original journal citations are given, along with capsule descriptions of the original scientific abstracts.
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Research conducted at the Harvard School of Public Health surrounding the relationship between bladder cancer and macro/micronutrients found that vitamins E and C had an antioxidant effect on the cancer. The study involved a group of men from a Health Professionals Follow-Up Study. During the studies 12 years, participants answered questions about food frequency and nutrient intake. Throughout the course of the trial, it was determined that 320 cases of bladder cancer had been diagnosed. No relationships were observed between bladder cancer and calories, potassium, sodium, calcium, magnesium, phosphorus, iron or water-soluble vitamins. However, an inverse relationship between dietary vitamin E and vitamin E supplements was found, as well as a dose-relationship for vitamin E and vitamin C supplements.
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Vitamin C is ... important to athletes because, as an antioxidant, it may help to reverse some of the oxidative damage that may occur from exercise. This oxidative damage, caused by free radicals, may interfere with the cells’ ability to function normally and is believed to play a role in many different health conditions, including the aging process, cancer, and heart disease.
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