Red Peppers:
Red peppers are among the family of vegetables, which naturally help in boosting the immune system in humans. Red peppers are a rich source of vitamin C, and one medium-sized red bell pepper is enough to fulfill the RDA of vitamin C. one red bell pepper contains almost 152 milligrams of vitamin C, which is extremly beneficial for the immune system. Red peppers also contain a considerable amount of beta carotene, which is a precursor of vitamin A or retinol. Vitamin A is very important for enhancing the function of the immune system and also promotes anti-inflammatory properties in the body.