The human immune system is the body’s natural defense against harmful germs like bacteria, viruses, and other pathogens. It is made up of cells, tissues, and organs that work together to detect and destroy invaders. When the immune system recognizes a threat, it produces antibodies and activates immune cells to fight off infections.
A strong immune system is essential for staying healthy. Factors like proper nutrition, regular exercise, and enough sleep help keep the immune system working well. Vaccines also play an important role by training the immune system to recognize and defend against specific diseases, making it easier to recover or avoid illness. Shutdown123