Originally Answered: Being diagnosed with Diabetes?
There is some mis-information on here.
You can faint from low blood sugar and you can faint from high blood sugar.
Both can result in death if not treated quickly, usually at the hospital. This applies to diabetics, not healthy people, so don't worry if your blood sugar is a little low because you skipped breakfast. As long as you are not diabetic, you should be fine.
Type 1 diabetics stop making insulin suddenly, so their blood sugar goes very high, very fast. They get very sick very fast, sometimes passing out from the HIGH blood sugar and going into a coma.
Its treated by giving them intravenous insulin, then when they go home, they have to take insulin shots for the rest of their lives.
The insulin shots can cause low blood sugar if you take too much, or exercise too much, or don't eat enough. This can cause fainting too and can lead to insulin shock and even death.
If the person can be woken up, they can take glucose tablets or gels to treat it. If not, they must be rushed to emergency for a glucogon shot.
Type 2 diabetics can experience both of these things too.
In type 2, your blood sugar creeps up slowly, so you don't usually get suddenly sick, like type 1's do. However, if you have type 2 for a long time, and don't know it, you can get very sick and pass out, just like a type 1.
This happened to my Mom. My mother's blood sugar went so high she passed out and started to go into a coma. They managed to revive her, and got her on insulin right away. It saved her life.
If a type 2 is on insulin they can experience insulin shock, just like a type 1 can. There are also other meds that can cause severe lows and fainting.
So, now you know. You can faint from low blood sugar, which can be caused in both type 1 and type 2 by too much insulin, too much exercise, not enough carbs, or too much of other medications, in combinations with any of the above.
You can also faint from high blood sugar, caused by undiagnosed diabetes, or not enough insulin, in type 1 OR type 2. It can also be caused by eating too many carbs, and by things like infections and even some medications.
Diabetes is very complex, making it difficult to find a good balance between treatment, diet, exercise, and daily living. It can take months to get a handle on everything and get it under good control. Some people never do.