As Editor-in-Chief of the journal Diabetology, I am pleased to announce that the Special Issue "Diabetology: Feature Papers 2023" has now been published in book format. Diabetology (ISSN 2673-4540) is an international, peer-reviewed, scientific, open access journal that provides an advanced forum for studies related to the epidemiology, etiology, pathophysiology, pathogenesis, management, complications, and prevention of diabetes, including the molecular, biochemical, and physiological aspects of diabetes. In the following Special Issue, "Diabetology: Feature Papers 2023", we aim to publish outstanding contributions in the main fields covered by the journal, which will make a great contribution to the community.