Word: beta
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Dates: during 1990-1990
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These two setbacks for the much-touted "carrotdrug" prompted the editorial board of the Journalof the National Cancer Institute to wonder intheir June issue: "Beta Carotene Didn't PreventCancer: What...
...wrong to say that beta carotene doesn'twork on skin cancer," says Mathews-Roth, whoseveral years ago found a positive correlationbetween beta carotene and skin cancer in ratswhich have been monitored from birth--indicatingthe opposite of Greenberg's study. "You can justsay it doesn't work under the conditions of thatstudy...
...believe that the finding of noassociation between beta carotene and skincancer...should not detract from the very stronghypothesis about beta carotene in thechemoprevention of cancer of other epithelialsites...
Clinical statistics show, says Hennekens, thattobacco raises the risk of cancer by 20 times,while beta carotene would only lower risk by 50percent at most. A smoker taking beta carotene,then, would face a risk 10 times higher than thenormal population...
...took beta carotene instead of stoppingsmoking, it would be a real shame," saysHennekens. "It should never be taken as analternative."Crimson File PhotoProfessors at the Medical School areparticipating in the Physicians' Health Study,which is testing more than 20,000 subjects to theeffects of beta carotene on cancer...