Your immune system is your first line of defense against all disease, especially infectious disease, and there are many different ways to boost your immune system and improve its function.

Think of your immune system as an army whose primary job is to protect you from invaders. Just like an army, you want your immune system to be responsive; to be able to correctly discern what is a threat and what isn’t; to use the appropriate force to neutralize the enemy without causing collateral damage; and to have the stamina to keep fighting until the danger has receded.