The immune system plays a vital role in overall health by protecting the body against infections and diseases. It comprises various cells, tissues, and organs that work together to identify and eliminate pathogens, including bacteria, viruses, and parasites. A well-functioning immune system is crucial for preventing illness and maintaining homeostasis. Factors such as diet, exercise, sleep, and stress management can significantly impact immune function. Incorporating a balanced diet rich in antioxidants, regular physical activity, and adequate rest contributes to its efficiency. Ultimately, a robust immune system is fundamental in promoting long-term health.