Why is immune system essential for our health?

Immune system is essential for our health because: In order to cope and fight against the disease causing pathogens (bacteria, viruses etc.) and other harmful substances (pollution, germs, etc.)

In order to fight against cancerous cells that get active as a result of certain cellular changes in the body. Not just in preventing diseases but the immune system also helps in recovering the body from any flu or disease

Final Answer. Therefore, the immune system is essential as the longevity and quality of life very much depends on a strong immune system.