I have been drinking coke my whole life. i have a bad constant cough, severe at times. there is no medical cause for the cough. could the coke be the cause?

Good question. At your age it is more likely you are taking an ACE inhibitor or an ARB for BP or heart problems as one of these is a common cause for drug induced cough. Statins may also do the same. Discuss with your Dr. I cannot think of how COKE could be responsible but it none of the above suggestion help I would stop and see if it helps. Can't hurt I would think.

Coke has caffeine and it is carbonated, both risks factors to lower the esophageal lower sphincter tone, thus leading to reflux. Reflux is a well known cause of cough due to stimulation of vagal reflexes and direct irritation. If you stop it for a week and your cough goes away.. a correlation is likely.