I wear a medical ID bracelet all the time. I also have a "I have diabetes. I am not intoxicated. If I am unconscious or acting strange, do this... (with instructions for calling 911 and administering hypoglycemia treatment)" card in the outside visible pocket of my wristlet and a more detailed medical ID list as the lock screen on my phone.
Yes, it is excessive, but I am concerned about going into severe hypoglycemia and people believing that I am intoxicated. I am a college student, and both underage and binge drinking are very common. I don't want to be found unconscious, have someone believe I am drunk, call the police to report me, and waste valuable treatment time before medical personnel arrive. By the time someone comes who knows how to treat hypoglycemia, it could be too late.