Dietary Polyphenols and their Protective Role Against Carcinogenesis

Abstract

Dietary polyphenols, a diverse group of bioactive compounds found in fruits, vegetables, grains, and beverages like tea and wine, have gained considerable attention for their potential to prevent cancer. This paper explores the protective role of polyphenols against carcinogenesis, examining their mechanisms of action, including antioxidant activity, modulation of cell signaling pathways, regulation of gene expression, and inhibition of inflammation. Through a review of experimental studies and clinical trials, the research highlights how polyphenols can interfere with various stages of cancer development, such as initiation, promotion, and progression. The paper further discusses the bioavailability and metabolism of polyphenols, which may influence their efficacy in cancer prevention. Despite challenges in translating preclinical findings into clinical practice, the existing evidence supports the notion that a polyphenol-rich diet may reduce the risk of certain types of cancer.