Diabetes: dia beet ease or dia beet iss?

Another vote for dia-beet-ease. I’ve never heard it pronounced dia-beet-iss.

I’m from New Zealand.

The “iss” pronunciation has always struck me as being both:

(1) Old timey, and
(2) Rural

Kind of like “rillator” for “realtor.”

My aunt says Huh-WY-Yuh. It drives me bonkers. My grandmother used to say Io-Way instead of Iowa.