Can Marijuana Use Prevent You From Giving Blood? Is Vaping Better Than Smoking? American Heart Association As e cigarette use grows, more research needed on long term effects of vaping American Heart Association Can you donate blood if you smoke? Does Vaping Cause Lung Cancer? INTEGRIS Health We all know smoking and vaping isn't great for your health. But it doesn't stop you from being a blood or plasma donor. Just make sure to wait one hour after donating