11. Gums that are swollen or tender
Diabetes can weaken the body’s defenses against germs. And, since they are everywhere, you will find them. Mouths are particularly susceptible to infection due to their moist environment and sharp teeth that are surrounded by soft tissue.
If your gums become loose, pull apart from your teeth or develop pus pockets, seek immediate help. You probably don’t need us to tell you this last part.