
The primary sign of weak immunity manifests through multiple occurrences of colds, flu and various types of infections. People who maintain strong immune systems recover quickly from illnesses, and rarely get sick. Your immune system fails to combat germs when you experience recurring sore throats, sinus infections and skin infections. The duration of infections becomes longer and their severity increases when your body fights them. Your body experiences excessive stress from repeated infections, which decreases your life quality so you need to get proper care, and make lifestyle changes to handle immunity problems.