An abstract is an essential component of a research paper, designed to provide a concise and accurate summary of the literature content without any commentary or supplementary explanations. It is a short piece of writing that aims to capture the crucial aspects of the literature, including the research purpose, methods, results, and conclusions. An abstract should possess independence and self-explanatory qualities, containing the essential information equivalent to the entire document. It should provide the necessary information even without reading the full text.

uncommon diseases, short for rare and uncommon diseases, is a relative concept that refers not only to uncommon or uncommon diseases in terms of overall incidence, but also to uncommon, uncommon diseases. But diseases that are particularly rare in a certain region, season, age group, sex, or location. A rare disease is defined as having an incidence of less than 0.1% in a population. 0.1% ~ 1.0% were rare diseases, and more than 1.0% were non-rare diseases. More than 150 new diseases have been identified since the 1970s. There are more than 7000 kinds of genetic diseases, most of which belong to rare diseases, so it is a long-term task to study rare diseases. In May 2018, the National Health Commission, the Ministry of Science and Technology, the Ministry of Industry and Information Technology, the State Medical Products Administration and the State Administration of Traditional Chinese Medicine jointly issued a document confirming 121 rare diseases in the national version of the Rare Diseases List.

Contribute my publication "online review management system" has been put into use, website: https://ynbz.cbpt.cnki.net/, from February 15, 2023, the manuscript, please switch to the system, reviewing time is 30 working days. This is to inform you that the original email address (ynbzz@163.com) will no longer accept submissions from February 15, 2023, and will only serve as the contact email address of the editorial department.

The clinical guidelines for the prevention and treatment of type 2 diabetes in the elderly in China (2022 version) (hereinafter referred to as the "guidelines") formulated by the endocrine and metabolism branch of the Chinese Geriatric association was officially released. The "guidelines" is based on the 2018 version of the expert consensus on the diagnosis and treatment measures for type 2 diabetes in the elderly in China, summarizes the relevant guidelines for diabetes in the elderly at home and abroad, and further optimizes the content to promote the standardized prevention, diagnosis and treatment of type 2 diabetes in the elderly, And improve the overall management level. Compared with the 2018 version of the guidelines, the contents of the new "guidelines" describe in more detail the individualized control objectives, treatment plans, diabetes complications and the management of geriatric syndrome in elderly patients with type 2 diabetes.

On April 15, 2022, the Publicity Department of the National Health Commission issued a document announcing the outstanding achievements in the theme publicity of the publications administered by the Commission in 2021. Our journal won three awards, among which the Journal of difficult diseases was selected as an excellent newspaper, and the column "the party has worked for the health of the people for 100 years" was selected as an excellent special column, The article "Thoughts on the construction of China's life and health culture system" written by Professor Wang Lixiang of the third medical center of the PLA General Hospital was selected as an excellent publicity article.