I smoked meth only a year. could i. have lung cancer?

Highly unlikely: But check with your doc to be sure.

Unlikely.: Signs of lung cancer are weight loss, coughing up blood, chronic cough, and shortness of breath. Smoking generally increases risk for lung cancer many years later, however if you have any of the above symptoms you should be checked by a doctor.

Methamphetamine: The methamphetamine that you smoked may have been cut with other toxic substances that could increase your risk of lung cancer. Meth also increases your risk of heart disease. There is nothing you can do about your past actions - put this behind you and live a healthy and drug free lifestyle from here on out. If you develop a cough or shortness of breath, get a lung exam and chest X ray.