Quitting smoking can have big health benefits, like making it easier to get and keep an erection. Smoking hurts blood vessels and lowers blood flow, which can make erectile dysfunction (ED) worse. Blood flow gets better when you stop smoking, and over time, your ability to get and keep an erection may also get better. But the level of change can be different based on things like how long and how much you smoked, your general health, and the way you live your life. Giving your body time to heal after ending smoking is very important. If ED doesn't go away or gets worse, you should see a doctor for more test results and treatment.