28 yrs old quit smoking 8 months ago and teeth decayed what is the chance of oral, throat and lung cancer? im nervous

Congratulations!: Within a year, your risk of lung, throat, and mouth cancer will begin to decrease drastically. After 8 years: your risk of oral, throat and lung cancer will have returned to that of a non-smoker. You know that stopping smoking is one of the best things you can do to improve your health and quality of life.

Hard to say: As many factors going into determine a persons risk, including how much and how long you smoke, if you drink alcohol(a risk for oral/throat cancers) and family history as a start. But remember, congrats on the stopping smoking and keep with it. Remember to keep up regular dental and medical follow up, so you can't be monitored for any issues. Otherwise live as healthy as you can!