Patricia Simon has had to deal with diabetes in two of her pigs. They were diagnosed at the young age of 18 months. Read an account of her experiences and their treatment at:
https://www.guinealynx.info/patriciasimo ... tment.html
Check out her Diabetes page for the warning signs (which include unexplained weight loss, sudden onset of cataracts, frequent urination, repeated urinary tract infections, and excess drinking). She feels any of these symptoms warrant a trip to the vet, who should explore diabetes as a possible cause.
https://www.guinealynx.info/patriciasimon_diabetes.html
Thanks, Patricia, for sharing your experiences!