There is no proven way to prevent pancreatic cancer. You can decrease your risk of getting this cancer by not smoking. Cigarette smoking is the most significant risk factor associated with pancreatic cancer. If you smoke, quit. If you don't smoke, don't start.
Also you may decrease your risk of developing pancreatic cancer by:
Eating a diet rich in fruits and vegetables
Staying physically active and engaging in daily exercise
Maintaining a healthy weight
There is no method of screening for pancreatic cancer so that it can be caught and treated early.