Type II diabetes is known to be associated with several different things. Genetics does play a role but the fact remains that the VAST majority of Type II diabetics are overweight. Overweight meaning BMI over 24. Genetics does play a role... but it is unlikely that you're gene's caused you to develope Type II diabetes. If you are thin... BMI <24 then your risk of developing diabetes is very low. There are, however... several medications that can cause diabetes II to develope. Namely steroids. And not just the illegal kind. Prednisone, cortazone, asthma medications... ect...