Secretary General of the International Union for Nutritional Sciences (IUNS). United Kingdom.
Currently Professor Emerita of Human Nutrition, Secretary General of the International Union of Nutritional Sciences (IUNS) (2013-2017) and immediate Past President of The Nutrition Society (UK and Ireland) (2013-16).
Appointed Professor of Nutrition and Head of the Division of Health Sciences in 1994, and Head of Department of Nutrition and Dietetics in 1990-5. Director of the Higher Education Academy Subject Centre for Health Sciences and Practice 2000-2011. Prior to appointment as lecturer at King's College (pre-merger Queen Elizabeth College) graduated in Dental Surgery in Edinburgh, and Human Nutrition in Berkeley, California and worked in San Francisco, Teheran, and Paris.
Main research interests: international public health nutrition; energy metabolism and obesity; iron metabolism. More than 200 academic publications including text books: Geissler & Powers: Human Nutrition, Elsevier 11th (2005) & 12th (2010) editions; the 13th edition with Oxford University Press, 2017; Geissler & Powers: Fundamentals of Human Nutrition: for students and practitioners in the health sciences. Elsevier; also Vaughan and Geissler. The New Oxford Book of Food Plants. 1st (1997) & 2nd (2005) editions Oxford University Press.
Served on many professional committees including Ministry of Agriculture, Food and Fisheries (MAFF) Food Advisory Committee, World Cancer Research Fund grants committee, and British and American Nutrition Societies. Consultant to the food industry and to international development agencies including the World Bank, CGIAR, FAO, which involved work in Iran, Haiti, Mauritius, Sierra Leone, Niger, Benin, Senegal, Ghana, Ethiopia, Yemen, Thailand, Philippines, Singapore, Indonesia, Malaysia and China.