[Extract] In a world dominated by the world wide web and social media, it has never been more important that nutrition and dietetics research is of high quality. For information to be accepted authoritatively, it is essential to have trust in the research process and research methods used. This applies across all users of research; the public, as well as researchers, practitioners, policy makers and funders. Furthermore, with the rise of predatory journals it is especially important that reputable journals uphold the highest standards of research integrity; methods employed in research are a key foundation of research quality. Improving the quality of research published in Nutrition & Dietetics has been a particular focus in recent years, and this is reflected in recent improvements in impact factor and other quality measures for the journal. The focus of this issue of the journal is on methodologies in nutrition and dietetics research and reflects the collaborative efforts of the profession in strengthening knowledge and its translation to improve nutrition outcomes for individuals, groups and communities. Special thanks must go to all authors that have contributed to this issue, many of whom also serve on the editorial board, and whose articles further assist Nutrition & Dietetics with its focus on publishing high-quality research.