**Quercetin: An Overview**  

**Definition:**  

Quercetin is a naturally occurring flavonoid found in many fruits, vegetables, and plants. It is known for its potent antioxidant and anti-inflammatory properties, making it a popular ingredient in dietary supplements and health products.  

**Function:**  

Quercetin works by neutralizing free radicals, reducing oxidative stress, and modulating inflammatory pathways. It also supports cellular health by enhancing mitochondrial function and regulating enzyme activity.  

**Applications:**  

Quercetin is widely used in dietary supplements to support immune health, cardiovascular function, and allergy relief. It is also incorporated into skincare products for its anti-aging and protective effects. Additionally, quercetin is being studied for its potential benefits in managing chronic diseases, such as diabetes and cancer, due to its bioactive properties.