Want to stop smoking? An assistant professor at Loma Linda University School of Public Health, says it’s a matter of conditioning the brain by new ways of thinking and acting.

Ernie Medina Jr, DrPH, has been helping smokers break the cycle of addiction for 25 years. He offers stop-smoking classes and counseling services for members of the community.

“Smoking is the number one cause of preventable death in the United States,” Medina says. “If you smoke, you need to stop.”