Smoked alot of weed for 7 years now and quit smoking cigarettes after 4 pack years. about to be 25. should i get a ct scan to check for cancer or no?

No: The USPSTF recommends annual screening for lung cancer with low-dose computed tomography (LDCT) in adults aged 55 to 80 years who have a 30 pack-year smoking history and currently smoke or have quit within the past 15 years. Screening should be discontinued once a person has not smoked for 15 years or develops a health problem that substantially limits life expectancy or the ability to do surgery

You can discuss: this with your doctor in order to fully assess your risk profile, but based on your age and limited smoking history there would probably be little benefit in getting a screening chest CT at this point.

Difficult but no CT: Cancer is extremely rare in someone who is 25 years old. Because of the radiation exposure, I would not recommend a CT unless you had more than a worry to suggest Cancer. Unexplained weight loss and loss of appetite are associate with Cancer. Smoking pot or cigarettes puts you at increased risk for cancer. You are young enough that stopping both is best and will lower your risk in the future.