Two widely used drugs for treating an enlarged prostate may increase the risk of developing type 2 diabetes. A study examined of two similar drugs, finasteride (Proscar) and dutasteride (Avodart), in 39,000 men; the 11-year study used 16,000 men taking tamsulosin (Flomax), a different type of drug for B.P.H., as controls. Compared with those using Flomax, men using Avodart had a 32 percent increased risk for developing diabetes, and those using Proscar a 26 percent increased risk. Read more