Jim Mann (scientist)

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Jim Mann

Joel Ivor Mann

Jim Mann is Professor in Human Nutrition and Medicine at the University of Otago and Consultant Physician (Endocrinology) in Dunedin Hospital, New Zealand.

"His research has principally been in the fields of lipids and carbohydrates as they relate to coronary heart disease and diabetes and in the field of obesity. However he has also been particularly interested in the role of obesity as a cause of cancer".[3]

Mann was appointed Companion of the New Zealand Order of Merit for services to medicine in the 2002 Birthday Honours. He has been awarded the Sir Charles Hercus Medal of the Royal Society of New Zealand Te Apārangi and the Himsworth Award from the Nutrition Group of the European Association for the Study of Diabetes.


Mann is Professor in Human Nutrition and Medicine at the University of Otago[4][5][6] and Consultant Physician (Endocrinology) in Dunedin Hospital, New Zealand.[7] He is also a Director of the Edgar Diabetes and Obesity Research (EDOR,[8] a World Health Organization Collaborating Centre for Human Nutrition at the University of Otago) and a Principal Investigator for the Riddet Institute at Massey University, Palmerston North.[9]


Mann and his team at the University of Otago in New Zealand carried out a major review for the World Health Organization (WHO) of the scientific evidence on sugar and weight gain, published in 2013 in the British Medical Journal.[10] The review, which showed that sugar "unquestionably contributes to obesity",[10] "informed WHO guidance on curbing sugar in the diet, leading to sugar taxes around the world."[11]

Mann and his team at the University of Otago carried out a "landmark" review, commissioned by the WHO and published in The Lancet in 2019. The analysis of population epidemiological studies and feeding studies said that dietary fibre in "good" carbohydrates will cut people's chances of early death from a wide range of diseases including cardiovascular disease (heart disease), coronary heart disease, stroke, type 2 diabetes, colorectal cancer, breast cancer, reduction in body weight and cholesterol—increasing satiety and helping weight control and favourably influencing lipid and glucose levels.[11] The report made examples of "good" carbohydrates being whole grain bread and oats, wholegrain cereals, pasta and bread, nuts and pulses[11] and declared sugar a "bad" carbohydrate.[11]



  • Essentials of Human Nutrition. New York: Oxford University Press. Co-edited with Stewart Truswell. 1998; 2002, ISBN 0-19-850861-1; 2007, ISBN 978-0199290970; 2011, ISBN 978-0199566341; 2017 ISBN 9780198752981.


  1. ^ "Royal Society Te Apārangi - M-O". royalsociety.org.nz. Retrieved 2019-01-14.
  2. ^ a b c "Professor Jim Mann". World Health Organization. Retrieved 2019-01-14.
  3. ^ Nutrition, Department of Human. "Professor Jim Mann". www.otago.ac.nz. Retrieved 2019-01-14.
  4. ^ Fleming, Amy (12 July 2017). "High-fat oil and low-paid farmers: the cost of our coconut craze". The Guardian. ISSN 0261-3077. Retrieved 2019-01-11 – via www.theguardian.com.
  5. ^ "Schools need national health food policy, researchers say". NZ Herald. 3 September 2018. ISSN 1170-0777. Retrieved 2019-01-11 – via www.nzherald.co.nz.
  6. ^ "Green leafy veg 'may cut diabetes risk'". www.bbc.co.uk. Retrieved 2019-01-11.
  7. ^ Medicine, Department of. "Department of Medicine staff profiles". www.otago.ac.nz. Retrieved 2019-01-14.
  8. ^ Centre, Edgar Diabetes and Obesity Research. "Edgar Diabetes and Obesity Research About us". www.otago.ac.nz. Retrieved 2019-01-14.
  9. ^ "Professor Jim Mann". www.riddet.ac.nz. Retrieved 2019-01-14.
  10. ^ a b Boseley, Sarah; editor, health (7 September 2013). "Sugar intake must come down, says WHO – but UK likely to resist". The Guardian. ISSN 0261-3077. Retrieved 2019-01-11 – via www.theguardian.com.
  11. ^ a b c d editor, Sarah Boseley Health (10 January 2019). "Blow to low carb diet as landmark study finds high fibre cuts heart disease risk". The Guardian. ISSN 0261-3077. Retrieved 2019-01-11 – via www.theguardian.com.
  12. ^ "Queen honours artists, mathematicians, sports people and literary lights". 3 June 2002. ISSN 1170-0777. Retrieved 2019-01-14 – via The New Zealand Herald.
  13. ^ "NWU, Potchefstroom Campus, News: Record books rewritten with number of doctorates awarded". North-West University. Retrieved 2019-01-14.
  14. ^ "Royal Society Te Apārangi - Recipients". royalsociety.org.nz. Retrieved 2019-01-14.
  15. ^ Friday; April 2005, 29; Otago, 11:05 am Press Release: University of. "School of Medicine inaugural Research Awards". Scoop. Retrieved 2019-01-14.
  16. ^ Gibb, John (4 July 2012). "Global award for Otago researcher". Otago Daily Times Online News. Retrieved 2019-01-11.

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