Antibodies do not form normally, and infections easily overtake the body. In some cases, medications can help counteract weakened immune systems. The best way to form a strong immune system is through maintaining a healthy lifestyle. Controlled weight, healthy diet, and regular exercise 1 can keep the body in the best shape possible to fight infections. Cleanliness, especially regular hand washing, can also help keep germs from invading the system.
Some foods appear to interfere with the body's immune function.
Sugars inhibit white blood cells in their attempts to destroy bacteria. 2 Alcohol 3 and high dietary fat 4 also interfere with immune function. Allergies can also weaken the immune system. Many ear infections are caused by allergic reactions , especially to dairy 5 . In these cases, antibiotics may treat the infection, but it will recur almost immediately.