There are many health benefits to quitting smoking. Within 12 hours of quitting smoking, carbon monoxide levels in the blood drop to normal levels. After 2 weeks to 3 months of quitting, circulation and lung function improve. After 15 years, the risk of coronary heart disease is the same as a non-smoker. ConnectiCare offers resources through their QuitCare program to help smokers quit through coaching, a quit plan, nicotine replacement therapy and prescription medication.