11 years old is the typical average, we've seen them as young as 4 and more senior than 11. Diabetes is mostly a later stage condition of acromegaly, so he could have been acro before being diabetic. The vast majority of kitties get their acromegaly diagnosis as a result of the diabetes, but not all. In hind sight, Neko had at least one symptom about 6 months before getting her diabetes diagnosis.