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"Tobacco harm reduction" is defined as a method to minimize harm and risk of death and disease without eliminating tobacco and nicotine use. In Japan, where heated tobacco products (HTPs) are prevalent, the tobacco industry is progressively endorsing the concept of "tobacco harm reduction." Therefore, stakeholders in tobacco control must urgently share perspectives and experiences surrounding this issue.　This discussion paper aimed to propose four requirements for effectively implementing "tobacco harm reduction" as a public health measure: (1) disease risk reduction, (2) cigarette smoking cessation, (3) no additional public health concerns, and (4) regulatory authorities held by health agencies, and compile information on them regarding nicotine-containing electronic cigarettes (e-cigarettes) and HTPs. Another aim was to summarize policies related to "tobacco harm reduction" adopted by an international organization (World Health Organization (WHO) and health authorities in foreign countries (the United States of America (USA), the United Kingdom (UK), Australia, Italy, and the Republic of Korea) to explore the implications of these requirements on Japan's approach. Regarding the first three requirements, scientific evidence indicated that e-cigarettes offers some level of risk reduction and can assist with cigarette smoking cessation. The potential uptake of e-cigarettes among youth and their possibility to serve as a gateway to combusted cigarette use is a concern, though a definitive causal link is yet to be established between the uptake of e-cigarette in youth and the subsequent use of different tobacco products. There is insufficient scientific evidence for any of the three requirements for HTPs. Regarding the official policies, WHO took the position that the same regulations should be applied to all tobacco products. Only the UK and USA officially established a health system based on the concept of "tobacco harm reduction"; even in Italy and the Republic of Korea, where HTPs are relatively widespread, health authorities denied any risk reduction by introducing HTPs. The UK officially adopted a smoking cessation policy with e-cigarettes. The USA established a modified risk tobacco product system under federal legislation enacted in 2009, whereas of June 2023, no HTP or e-cigarettes were recognized as explicitly reducing health risk. Regarding the fourth requirement, the UK and USA institutionalized "tobacco harm reduction" under health authorities' regulation independent of the tobacco industry. The introduction of a tobacco harm reduction policy in Japan should be considered only in line with health authorities' regulation and implementation of comprehensive tobacco control measures independent of the tobacco industry.

Objectives: This study aimed to review the trends in "occupational health nursing research" conducted in Japan and determine research areas that need strengthening eventually., Methods: All articles published in Ichushi Web since 1903 were searched using the keywords "occupational health nursing" and "research." The 486 papers identified were extracted and categorized according to type and publication year. The research content of 194 original and review papers was categorized according to whether they addressed practical methods and abilities., Results and Discussion: According to publication type, out of the 486 papers, 230 (47.3%) were conference proceedings, whereas 194 (39.9%) were original and review papers. Among practical methods-related papers, 107 (55.2%), 86 (44.3%), and 1 (0.5%) were on general, health, and work environment management, respectively, whereas none addressed work management and occupational health education. Among practical ability-related papers, 125 (64.4%), 23 (11.9%), and 46 (23.7%) were on knowledge, technology, and competency, respectively. The overview of annual trends showed that the papers of all types have increased progressively. While conference proceedings accounted for 80% of the papers until 1992, recent proportions have shown a decrease to < 50%. Conversely, original papers accounted for < 20% of the papers early on, but observed a progressive increase, with recent proportions of > 40%. Regarding content, almost no papers addressed work environment management, work management, and occupational health education. Additionally, practical ability-related papers highlighted that although some research on technologies and competencies has been conducted, some areas remain inadequately addressed., Conclusions: In Japan, occupational health nursing papers have been steadily increasing since the first conference proceeding was published in 1980. Among papers addressing practical methods, those related to general management were most common, of which occupational health management accounted for approximately 80%, indicating efforts aimed at the development of occupational health nursing through research. Moreover, limited papers addressed work environment management, work management, and occupational health education, suggesting the need for future research. Among papers addressing practical ability, > 60% were related to knowledge, with research on competencies was only > 20%, suggesting the need for further research eventually.

Cancer genomic medicine in Japan began in earnest with the implementation of gene panel testing covered by national health insurance in June 2019. However, the information obtained from this testing is limited to less than 0.1% of the entire genome. To enhance the effectiveness of therapy, understand the intricate biology of cancer, and develop new therapeutic drugs, it has become essential to promote the analysis of the whole genome. In Japan, the Action Plan for Whole Genome Analysis(Version 1)was released in December 2019. In 2021, AMED project"the full-scale operation of cancer whole genome analysis"was launched. The Action Plan for Whole Genome Analysis 2022 set a goal to return the information promptly to patients and citizens. Project Implementation Preparation Office was organized in April 2023 for acceleration of the system development for the clinical whole genome analysis. This paper introduces the current efforts and discuss the future perspectives of cancer genome medicine in Japan.