The immune system is a complex network of cells, tissues, and organs that protect your body from pathogens; and, this time of year, you’ll hear a lot about it. Think of it as a personal shield. Its job is to protect you from harmful organisms and toxins that can have a negative effect on your health.
Your immune system is made up of two parts. One is your innate immune system, which protects you against infections and helps wounds like cuts and bruises heal. The other is your adaptive immune system, which adapts to protect you from viruses like the flu. Together, these form a complex system of cells, tissues, and organs that protect your health.