system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: there must be heaps of overweight people who are type 2 diabetic and don’t know it (or haven’t been bothered to be tested). So, does type 2 kill people or what does it really do to people, day to day?
gpt
You’ve hit on a major problem with getting people to change their lifestyle after a diabetes diagnosis. The short answer to your question is yes, diabetes does kill people, but slowly. You are not going to die from having high blood sugar today, in fact you may not even feel sick at all. But when you have all that sugar in your blood for a long time, it starts messing with things. A simple rule is that anything that is not where it is supposed to be is going to cause damage. Sugar in your blood vessels is going to damage them. Damaged blood vessels get sort of sticky, and pick up bits of fats floating by. Eventually this can cause a heart attack or a stroke. Sugar in your eyes damages the tissue there. This can cause vision problems or even blindness. Sugar in your kidneys causes damage, and this will lead to renal failure.  

Now imagine telling some one who is socioeconomically disadvantaged and worried about getting evicted that they have to spend more money on healthier food today, even though they feel perfectly fine, because 10 years from now they might get sick.