How Your Body Fights Off Germs Every Day

Skin acts as the first barrier, blocking most invaders before they enter.
Mucus traps pathogens, while cilia sweep them out like tiny brooms.
Stomach acid dissolves many germs before they reach your intestines.
White blood cells patrol blood and tissues like mobile security guards.
Macrophages engulf and digest harmful microbes in seconds.
Chemical “alarm signals” summon reinforcements when trouble begins.
Fever raises body temperature to slow down invading microbes.
Antibodies attach to germs, marking them for destruction.
The lymphatic system filters out waste and pathogens.
Even your tears contain enzymes that break down bacteria.