Needles in a haystack
نویسنده
چکیده
supplements, as in the case of vita min a. yet, other studies suggest that the main impact of poverty extends beyond diet and cannot be addressed through improved nutrition alone. Such is the expe rience from peru, where a study by the tuberculosis research group at imperial college (london, uK) has been evaluat ing whether dietary supplementation with vitamin a, vitamin D and zinc reduces the risk of tuberculosis. the study recruited 800 healthy people in peru who were at risk of contracting the disease for a randomized, blinded, placebocontrolled trial, which is approaching completion. the results are yet to be published, but preliminary data suggest that supplementation has failed to protect against tuberculosis, according to carlton Evans, a research career develop ment fellow in clinical tropical Medicine at the Wellcome centre for clinical tropical Medicine at the college, and leader of the study.
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تاریخ انتشار 2011