Likely won't help much but -
As mentioned above in Canada diabetes CAN be classed as a disability IF the person meets certain requirements.
The list of requirements is not necessarily health based here but based on the time we spend managing our condition. They put a bottom limit set at 14 hours per week in management - and do not count meal prep, or exercise as 'management'.
So to claim being 'disabled' here its not that you need complications, or severe health problems or mobility issues, you simply need to be very involved on a level where staying healthy requires at least 14 hours per week.
So, someone like me - a T1D with good health, good A1cs and no impairment to daily life COULD claim being disabled because i do have a chronic, life long condition, that has potential for significant complications if un-managed, and to prevent these complications i spend a significant amount of time each day managing it.
On the other hand, if there is an unhealthy diabetic here, who already has complication, but is not involved enough with there management and mitigation to meet that minimum weekly time, then they would not qualify.
Its a strange way of looking at it, but to me it makes sense. Our condition presents the potential, and they are aiding those aiding themselves, and giving incentive to those who are not spending enough time. It essentially makes you work a bit, rather then just looking for a hand out.