Flavonoids are a diverse group of plant derived polyphenolic compound that exhibit a wide range of biological activities, making them a focus of extensive research in recent years. This review explores the multifunctional properties of flavonoids, including their antioxidant, anti-inflammatory, anticancer, antimicrobial and cardioprotective effects. Furthermore, it empathizes how flavonoids can help prevent chronic illnesses like diabetes, cardiovascular disease and neurological diseases. These through analysis emphasizes how flavonoids are used in both nutrition and medicine.