British Journal of Nutrition is an international peer-reviewed journal that publishes original papers and review articles across the full spectrum of nutritional science. The focus of all manuscripts submitted to the journal should be to increase knowledge in nutritional science relevant to human or animal nutrition. The BJN welcomes manuscripts that report studies in nutritional epidemiology, nutritional requirements, metabolic studies, body composition, energetics, appetite and obesity. Manuscripts that address interactions of nutrition with endocrinology, genetics, immunology, microbiology, molecular and cell biology, neuroscience and physiology and that report outcomes relevant to health, behaviour and well-being are also within scope for the BJN.

>> Nutritional Endocrinology
Urinary iodine excretion and optimal time point for sampling when estimating 24-h urinary iodine
Janna Eriksson, Lars Barregard, Gerd Sallsten, Balazs Berlinger, Stephan Weinbruch, Sofia Manousou, Dag G. Ellingsen, Helena Filipsson Nyström

>> Review
Efficacy of dietary vitamin D3 and 25(OH)D3 on reproductive capacities, growth performance, immunity and bone development in pigs
Maruf Hasan, Michael Oster, Henry Reyer, Klaus Wimmers, Dagmar-Christiane Fischer

>> Research Article
Re-exploration of dietary iodine intake in Chinese adult males using a modified iodine balance study
Xiaobing Liu, Jun Wang, Yajie Li, Hongxing Tan, Xiuwei Li, Deqian Mao, Yanyan Liu, Weidong Li, Wei Yu, Jiaxi Lu, Junan Yan, Jianhua Piao, Lichen Yang, Chongzheng Guo, Xiaoli Liu, Xiaoguang Yang

>> Human and Clinical Nutrition
a. A comparative, randomised MRI study of the physiological and appetitive responses to gelling (alginate) and non-gelling nasogastric tube feeds in healthy men
Abdulsalam I. Aliyu, Aline Nixon, Caroline L. Hoad, Luca Marciani, Maura Corsetti, Guruprasad P. Aithal, Sally M. Cordon, Ian A. Macdonald, Maha H. Alhussain, Hiroaki Inoue, Masahiko Yamada, Moira A. Taylor

b. Serum folate mediates the associations of MTHFR rs1801133 polymorphism with blood glucose levels and gestational diabetes mellitus in Chinese Han pregnant women
Yunguo Wang, Yiyun Wang, Yao Sun, Naijian Zhang, Xiaoshan Liang, Suhui Luo, Lirong Dai, Chao Sun, Yungui Yang, Shuying Li, Xumei Zhang, Qiang Zhang

c. Are the current feeding volumes adequate for the growth of very preterm neonates?
Chrysoula Kosmeri, Vasileios Giapros, Antonios Gounaris, Rozeta Sokou, Ekaterini Siomou, Dimitrios Rallis, Alexandros Makis, Maria Baltogianni

d. The effects of beetroot and nitrate supplementation on body composition: a GRADE-assessed systematic review and meta-analysis
Reza Afrisham, Vida Farrokhi, Matin Ghanavati, Omid Asbaghi, Shooka Mohammadi, Mehrnaz Mohammadian, Tahereh Taghvaei-Yazdeli, Shayan Safaei-Kooyshahi, Yasaman Jadidi, Damoon Ashtary-Larky

e. Prognostic value of different cut-off points of the NRS-2002 tool to identify nutritional risk in critically ill patients: a longitudinal study
Bruna Barbosa Stello, Aline Cattani, Danielle Silla Jobim Milanez, Elisa Loch Razzera, Júlia Lima, Flávia Moraes Silva

f. Maternal fish consumption and child neurodevelopment in Nutrition 1 Cohort: Seychelles Child Development Study
Marie C. Conway, Alison J. Yeates, Tanzy M. Love, Daniel Weller, Emeir M. McSorley, Maria S. Mulhern, Maria Wesolowska, Gene E. Watson, Gary J. Myers, Conrad F. Shamlaye, Juliette Henderson, Philip W. Davidson, Edwin van Wijngaarden, J. J. Strain

g. Impact of skeletal muscle mass evaluating methods on severity of metabolic associated fatty liver disease in non-elderly adults
Ting Zhou, Junzhao Ye, Yansong Lin, Wei Wang, Shiting Feng, Shuyu Zhuo, Bihui Zhong

h. Microbiota signatures and mucosal healing in the use of enteral nutrition therapy v. corticosteroids for the treatment of children with Crohn’s disease: a systematic review and meta-analysis
Zhaolu Ding, Kiran Ninan, Bradley C. Johnston, Paul Moayyedi, Mary Sherlock, Mary Zachos

i. Impact of lifestyle factors on dietary vitamin B6 intake and plasma pyridoxal 5′-phosphate level in UK adults: National Diet and Nutrition Survey Rolling Programme (NDNS) (2008–2017)
Asrar Alsaeedi, Simon Welham, Peter Rose

j. Intake and sources of dietary fibre and dietary fibre fractions in Finnish children
Tuuli E. I. Salo, Sari Niinistö, Tuuli E. Korhonen, Helena Pastell, Heli Reinivuo, Hanna-Mari Takkinen, Jorma Ilonen, Jorma Toppari, Mikael Knip, Riitta Veijola, Suvi M. Virtanen

>> Editorial
Transparency in research collaborations with the brewing industry
John C. Mathers

>> Policy-Relevant Paper
Principles of engagement on research and other collaborations between the brewing sector and research entities: the FACT Principles
Frans J. Kok, Martin Zarnkow, Aafje Sierksma

>> Dietary Surveys and Nutritional Epidemiology
a. Validation of mid-arm circumference for surveillance of obesity in African adolescent girls and adult women
Hilde L. Nashandi, Makama A. Monyeki, John J. Reilly

b. Validation of the 2 × 24 h recall method and a 7-d web-based food diary against doubly labelled water in Danish adults
Anja Biltoft-Jensen, Karin Hess Ygil, Lenette Knudsen, Jeppe Matthiessen, Sisse Fagt, Ellen Trolle, Trine Holmgaard Nielsen, Diane McIntosh Hansen, Cecilie Löe Licht, Maurice Martens, Catherine Hambly, John R. Speakman, Tue Christensen

c. Association between legume consumption and the intake of other foods and nutrients in the Finnish adult population
Atiyeh Gholami Karim Abad, Tarja I. Kinnunen, Mirkka Maukonen, Anna-Maija Koivisto, Satu Männistö, Niina E. Kaartinen

>> Human and Clinical Nutrition
a. The need for particular scrutiny of claims made by researchers associated with ultra-processed food manufacturers
Mark Lawrence

b. Select Ultra-processed foods: a concept in need of revision to avoid targeting healthful and sustainable plant-based foods
Ultra-processed foods: a concept in need of revision to avoid targeting healthful and sustainable plant-based foods
Mark J. Messina, John L. Sievenpiper, Patricia Williamson, Jessica Kiel, John W. Erdman