Vitamin & Dietery Preparation

Two large randomized studies call into question the efficacy of various vitamins and dietary supplements in preventing cancer. Preliminary results from the Physician’s Health Study II (PHSII) show that taking vitamins C or E imparts no cancer-reducing benefits in men. A second report concluded that a combination of folic acid, vitamin B6, and vitamin B12 were no better than placebo at preventing breast and invasive cancers in women.