When it comes to battling pathogens—from COVID to the common cold—the first line of defense is a strong immune system.
Without an immune system the human body would quickly be ravaged by microbial invaders. Immunity acts like a shield, keeping these would be intruders at bay. When our protection is compromised—either due to immunodeficiency disorders or just general fatigue and poor eating habits— the body becomes more vulnerable to an invasion. But when immunity is strong, we’re less likely to get sick.
