Diabetes is one of the most common health challenges facing Americans. According to the CDC, about 1 in 10 of us live with the condition. One of the drugs used to treat diabetes is in short supply lately because of a viral craze highlighting the drug's weight loss side effects. People seeking to use the drug for off-label purposes are having an impact on diabetes patients' ability to obtain the drug they need to stay alive, and manufacturers are having trouble keeping the supply steady.