Callum Morison Regan
About me
- Hi! Callum here from Scotland!
I have a background in cell biology as well as nutrition and now focus on physical activity and health.
I am passionate about physical activity and eating a healthy diet. I
thoroughly enjoy playing sports, running and training in the gym. I also like
to eat a well-balanced diet but am a foodie at heart and love to eat food
from all around the world.
Research
In my PhD it was found that sex and education seem to play important roles in determining physical activity and sedentary behaviour. Total time in physical activity and time in moderate to vigorous-intensity physical activity were found to reduce the risk of incident CVD. The results from both of these studies have important implications for health promotion strategies. For instance, acquiring physical activity from one to three 20 minute brisk walks a day offers a practical solution that can help many adults maintain good cardiovascular health. Finally, mobile health holds promise to support behaviour change in adult populations but needs to be tailored appropriately.
In my postdoc I will focus my attention on tackling obesity and the double burden of malnutrition in children and adolescents.
The first project aims to evaluate the implementation of a family support programme that combines the school and primary health care to promote health and prevent and manage overweight and obesity in children 6-12 years. Co-Fam project | Karolinska Institutet
The second project aims to evaluate a sustainable health intervention on health, nutrition, and environmental outcomes for the primary prevention of adolescent obesity and other non-communicable diseases in several countries in Africa. Changemaker project | Karolinska Institutet
Teaching
Lectured in the subject area of physical activity and health in the Nutrition Science Master's programme at Karolinska Institutet.
Lectured in the PhD course Measuring Physical Activity with Accelerometers.
Co-supervised a master's student project that explored time spent in physical activity domains in people living with and without multimorbidity.
Articles
- Article: PLOS ONE. 2025;20(10):e0333201Rossen J; Anderbro T; Andermo S; Bergman P; Hagstromer M; Jacobsson M; Johansson U-B; Kallings L; Lonn A; Regan C; von Rosen P
- Article: JOURNAL OF PHYSICAL ACTIVITY & HEALTH. 2025;22(8):940-949Regan C; Hagstromer M; Bergman F; Back M; Drake I; Johansson H; Rossen J; von Rosen P
- Article: NPJ SCIENCE OF FOOD. 2024;8(1):64Heiland EG; Lindh F; Regan C; Ekblom O; Kjellenberg K; Larsen FJ; Fernstrom M; Nyberg G; Ekblom MM; Helgadottir B
- Article: DIGITAL HEALTH. 2024;10:20552076241247935Regan C; Von Rosen P; Andermo S; Hagstromer M; Johansson U-B; Rossen J
- Article: NUTRIENTS. 2022;14(12):2489Regan C; Walltott H; Kjellenberg K; Nyberg G; Helgadottir B
- Article: FRONTIERS IN MICROBIOLOGY. 2018;9:3125Matallana-Surget S; Werner J; Wattiez R; Lebaron K; Intertaglia L; Regan C; Morris J; Teeling H; Ferrer M; Golyshin PN; Gerogiorgis D; Reilly SI; Lebaron P
All other publications
- Study protocol: PLOS ONE. 2023;18(5):e0285581Regan C; Heiland E; Ekblom OJ; Tarassova O; Kjellenberg K; Larsen F; Walltott HM; Fernstrom M; Nyberg G; Ekblom M; Helgadottir B
Employments
- Research collaborator, Digital health promotion, LongLife Active, 2022-
- Postdoctoral Researcher, Department of Global Public Health, Karolinska Institutet, 2026-2028
- Phd Student, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, 2022-2026
- Project Assistant, Adolescent health, diet, physical activity and cognition, Swedish School of Sport and Health Sciences, 2021-2022
- Digital ambassador for the Nutrition Science MSc, Karolinska Institutet, 2020-2021
Degrees and Education
- MSc, Nutrition Science, Karolinska Institutet, 2021
- BSc, Cell biology, University of Stirling, 2018
- Erasmus exchange, Cell biology, University of Tübingen, 2016
Supervision
Other researchers who have defended a thesis
- Mary Abetang, Accelerometer-Measured Physical Activity and Sedentary Behaviour Among Adults (aged 50-64) with and without Multimorbidity in Sweden: A Cross-Sectional Study, 2025
Journal reviewing
Conference/event participation
- Invited speaker, uMove movement analysis workshop, Guest speaker at the uMove movement analysis workshop. The workshop focused on movement analysis as an objective outcome. I presented one of my PhD studies focusing on accelerometer measured time in PA and SB in people with and without chronic diseases, 2024
- Invited speaker, Annual meeting of The Swedish Nutrition Association, Invited guest speaker at The Swedish Nutrition Association's annual meeting. I presented one of my PhD studies investigating the feasibility of a mHealth service that promotes healthy lifestyle behaviours., 2024
- Invited speaker, NVS Global University day, A global university day, bringing researchers and students together to talk about collaborations with Universities and experiences of visiting institutions., 2024
- Poster presenter of submitted abstract, ISBNPA International conference 2023, Abstract submission accepted and then presented a poster at the ISBNPA conference in Uppsala., Feasibility of a mHealth app promoting healthy lifestyle behaviours, 2023
- Event administrator, KI Educational congress 2022, A congress on education and collaboration at Karolinska and other institutions. Carried out interviews with guest speakers, including Karolinska Institutet's president Annika Östman Wernerson as well as assisted in timings of presentations., 2022
- Invited speaker, Welcome ceremony for new students at Karolinska Institutet, An annual welcome ceremony is held for new students attending Karolinska Institutet. As a former digital ambassador of the Nutrition science MSc I was an invited guest speaker, to talk about experiences of studying at Karolinska Institutet and living in Stockholm., 2021