The human immune system is a complex network of cells, tissues, and organs that work together to defend the body against harmful invaders like bacteria, viruses, and parasites. It recognizes and attacks these foreign substances to prevent infections and diseases. The immune system includes barriers such as the skin, as well as specialized cells like white blood cells that identify and destroy pathogens. It also has a memory function, which allows it to respond more quickly to infections it has encountered before.
A healthy immune system is crucial for maintaining overall health and fighting illnesses. Factors such as proper nutrition, regular exercise, sufficient sleep, and stress management all play important roles in supporting immune function. Vaccinations also help train the immune system to recognize specific threats, making it stronger and more prepared. Understanding how the immune system works empowers individuals to make choices that boost their natural defenses. Shutdown123