Article: Beta Carotene, Vitamin A Halted in Lung Cancer Prevention Trial

WASHINGTON, Jan. 18 /U.S. Newswire/ -- The following was released today by the National Cancer Institute:

Investigators conducting the Beta Carotene and Retinol Efficacy Trial (CARET), a large study of the combination of beta carotene and vitamin A as preventive agents for lung cancer in high-risk men and women, terminated the intervention last week after an average of four years of treatment and told the 18,314 participants to stop taking their vitamins. Interim study results indicate that the supplements provide no benefit and may be causing harm.

Investigators in another trial, the Physicians' Health Study, said today that their study of 22,071 U.S. male physicians ended on schedule, ...

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