The immune system consists of organs, cells, tissues, and proteins. Together, these carry out bodily processes that fight off pathogens, which are the viruses, bacteria, and foreign bodies that cause infection or disease.

<p>One of the most important ways to stay healthy is to adopt habits that strengthen immunity. That means getting enough sleep, managing stress, being active, washing your hands properly, and yes, eating well.</p>

One of the most important ways to stay healthy is to adopt habits that strengthen immunity. That means getting enough sleep, managing stress, being active, washing your hands properly, and yes, eating well.