high blood sugar suppresses immunity i. e. defense mechanism of the body. compromised defense mechanism may lead to viral infections of respiratory system like cough and cold. it is not cold that causes high blood sugar maybe contrary is true.
would a cold make a diabetic's sugar run higher? . my daughter has type 1 diabetes that is managed with an insulin pump. her a1c is usually within a good range. her sugar has been running higher lately but she has a cold and some congestion. would a cold/congestion make her sugar run higher? .