Do you smoke? Does your neck hurt? Did you assume those two questions have nothing in common? You may be wrong. According to Mitchel Leavitt, smoking, and, specifically, nicotine, may be harming your neck. Possible problems associated with absorption issues and more have been discovered. Just one more reason to quit.
If you or someone you know is trying to quit smoking then consider buying a vaporizer pen. Which will help you quit smoking and is a much healthier alternative.