Function

• The immune system is the part of the body that battles infection and disease. By keeping the immune system healthy, sicknesses can be prevented or lessened.
  
  

Vegetables

• Some of the best vegetables for boosting immunity are roots and bulbs; carrots, sweet potatoes and yams. They all have beta-carotene, which helps the body produce vitamin A.
  
  

Fruits

• Some of the best fruits for boosting immunity are bananas, grapes and apricots. These fruits have vitamin B in common (B2, B3, B5). B vitamins help to produce antibodies, gain energy and even keep the nervous system on track.
  
  

Nuts and fish

• Nuts and fish are also considered super immune boosters. Fish is a great source of Omega-3 fatty acids. These acids help reduce inflammation and cholesterol. Nuts such as hazelnuts and cashews help boost energy.
  
  

Warning

• Without the benefits of healthy foods, malnutrition is imminent. A weakened immune system can also lead to different forms of cancer and infections.