Serum creatine kinase levels (CK) can vary among healthy subjects, even when correcting for muscle mass. Age, gender, race, and physical activity can affect CK. CK is higher among black males, as well as newborns.Moreover, CK reference ranges are varied with different assays and reference temperatures.
4. Avoid eating fried foods: Fried foods are oily in nature and oil is a well-known cough trigger. Deep-frying foods in hot oil generates a compound called acrolein, which acts as an allergen that aggravates coughing and causes throat itching. So, itâs best to avoid oily, fried foods while you have a cough. 5. Avoid smoking: Smoking is one of the causes of a cough due to bronchitis.
1 Instead of drinking orange juice or taking vitamin C supplements, try drinking pineapple juice. It has roughly the same amount of vitamin C, but also has been found to suppress coughs and loosen mucus (due to the bromelain).  Arthritis. Once again, bromelain helps out.