Antioxidant supplements and cancer 

Abstract

Reactive oxygen species (ROS) can cause cancers. Owing to the causal role of ROS in raising cancers and the fact that different antioxidant promoters are considered tumor inhibitors, so far, epidemiological surveys show that an appropriate consumption of antioxidant-rich foods and supplements is inversely associated to cancer risk. However, some clinical trials with antioxidants do not support this idea. This paper will review the research conducted on the associations between antioxidant supplements consumption and cancers risk, especially on breast, prostate, lung and skin cancers. 

Keywords: Cancer, Free radicals, Breast cancer, Antioxidants, Reactive oxygen species, Superoxide dismutase