How common is Hyperthyroidism in older Siamese?

  
Sydney (in- memory of)

Siamese- Supermodel
 
 
Purred: Thu Jan 29, '09 7:34am PST 
At my last vet visit, my vet told my mommy that I have "borderline hyperthyoidism" and that it is common in geriatric cats (I'm offended that he called me geriatric, but...). Do you any of you in this group know anything about this condition? Just wondering...