Quite a few people take pills for high blood pressure or high cholesterol or inhalers for asthma, etc.
I know nothing on the subject, so please take this as a question.
If you are diagnosed with Type 2 Diabetes you should be referred to a dietician, personal trainer, etc. to improve your lifestyle. This is preventative medicine against amputations and other complications.
Now the advice they give diabetics is the same advice everybody should get. Health promotion is pretty hard to do, however. In all it is a good thing but some people who do the right thing will fall victim anyway like running guru Jim Fixx, or Jerome Rodale who died on the Dick Cavett show in 1971.