How common is type 2 diabetes amongst sumo wrestlers?

I do not meant to be personal, and I do apologise if it seems so!

I have asked the question because looking at pictures taken of sumo wrestlers, it appears that they have several features that is associated with a stereotype image of Diabetes type 2 sufferers.

It would be interesting to know whether they really are more prone to diabetes type 2, or the commonly accepted image does not apply to each and every one of us.

Thank you very much for your input.