Page "Carotene" Paragraph 47

The Journal of the National Cancer Institute and The New England Journal of Medicine published articles in 1996 about a trial that was conducted to determine if vitamin A ( in the form of retinyl palmitate ) and β-carotene had any beneficial effects to prevent cancer.

The results indicated an increased risk of lung cancer for the participants who consumed the β-carotene supplement and who had lung irritation from smoking or asbestos exposure, causing the trial to be stopped early.