Immune Function | Community Health

The immune function is a vital component of our overall health, comprising a network of biological systems that protect us from diseases caused by pathogens, such as viruses, bacteria, and parasites. With two major subsystems, the innate and adaptive immune systems, our bodies can detect and respond to a wide variety of threats, distinguishing them from healthy tissue. The immune function is essential for our survival, and its dysregulation can lead to various diseases, including autoimmune disorders and immunodeficiency. According to the World Health Organization (WHO), a healthy immune system is crucial for preventing and controlling infectious diseases, which account for approximately 16% of all deaths worldwide. The National Institutes of Health (NIH) estimates that the human immune system consists of approximately 2 billion immune cells, including T cells and B cells, which play a crucial role in our defense against infections. Understanding how the immune function works and how to maintain its optimal performance is vital for promoting public health and preventing diseases.