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done any studies and looked at the types of microbes that are in the GI tract, the possibility of infection (subclinical infections) that occur in long-distance runners? Has anyone ever done that type of work?

PARTICIPANT: If anything, there was one paper that suggested that too much vitamin C might contribute to some of the lesions that have been observed in the GI tract in athletes.

PARTICIPANT: You would have to take in a large amount, wouldn't you?

DR. EVANS: With some athletes, apparently they do take in quite a bit.

DR. NESHEIM: Thank you very much for your interesting comments.

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