In outpatient and inpatient care facilities, more than one in four residents has diabetes. Many of them are treated with insulin. The trend is increasing. The nursing staff plays an important role in the care and therapy support of geriatric patients with diabetes. The training of nursing staff during their education is insufficient, and many aspects of modern diabetology are not known to caregivers. This practical and continuing education handbook contains all the essential additional information that caregivers need: symptoms and clinical picture of type 2 diabetes mellitus in geriatric patients, accompanying and secondary diseases such as diabetes in dementia, therapy options, care measures, patient empowerment, quality management, and staff training. A handbook for nursing practice, continuing education, and all staff who care for older adults.