Do you fall sick frequently? Or easily catch colds or get the flu? Face respiratory or breathing issues, or catch frequent respiratory, digestive or skin infections? If your answer to any of these is “Yes”, then you may have a weakened immune system, which can be improved by supplementing your regular diet with adequate intake of Vitamin C. Your immune system may not function optimally when a lack of Vitamin C is there causing improper lung function, poor functioning of the gut leading to diarrhea and many other health hazards. Your body needs an adequate supply of Vitamin C to help fight back infections.