To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Share Embed Share URL Video File Node URL Embed Code <iframe title="MRC TV video player" width="640" height="360" src="https://www.mrctv.org/embed/40586" allowfullscreen></iframe> New study finds some vitamins do little to decrease cancer risks. CBS, NBC attack entire industry and ignore benefits of vitamin supplements.