Watch any footage on the Delhi chief minister Arvind Kejriwal and you can't help but notice he's coughing. Agreed that all the happenings in the last few days have taken a toll on his immunity. But is there something more to it? Yes say the doctors. He is a diabetic patient which makes him more prone to cold and chest infections as compared to normal people. Diabetes is a group of metabolic diseases in which a person has high blood sugar either because the pancreas do not produce enough insulin or because cells do not respond to the insulin that is