Annals Internal Medicine, Author Interviews, Sugar / 19.12.2016
How Strong is the Scientific Basis of Sugar Intake Guidelines?
MedicalResearch.com Interview with:
[caption id="attachment_30649" align="alignleft" width="150"]
Dr. Bradley Johnston[/caption]
Bradley C. Johnston, PhD
Prevention Lab, Child Health Evaluative Sciences, The Hospital for Sick Children Research Institute
Peter Gilgan Centre for Research and Learning
Toronto, Ontario
MedicalResearch.com: What is the background for this study?
Response: I am scientist at The Hospital for Sick Children and a professor of clinical epidemiology at the University of Toronto and McMaster University in Canada. I have a particular interest in research methodology and preventive medicine. As a research methodologist I am interested in how researchers get to their conclusions. In particular I am interested in the “uncertainty” in estimated treatment or exposure effects.
Many guidelines have methodological issues but it was suspected that the nutritional guidelines were especially problematic. Our study in Annals of Internal Medicine set out to document the issues systematically with respect to sugar intake recommendations from authoritative guidelines.
Dr. Bradley Johnston[/caption]
Bradley C. Johnston, PhD
Prevention Lab, Child Health Evaluative Sciences, The Hospital for Sick Children Research Institute
Peter Gilgan Centre for Research and Learning
Toronto, Ontario
MedicalResearch.com: What is the background for this study?
Response: I am scientist at The Hospital for Sick Children and a professor of clinical epidemiology at the University of Toronto and McMaster University in Canada. I have a particular interest in research methodology and preventive medicine. As a research methodologist I am interested in how researchers get to their conclusions. In particular I am interested in the “uncertainty” in estimated treatment or exposure effects.
Many guidelines have methodological issues but it was suspected that the nutritional guidelines were especially problematic. Our study in Annals of Internal Medicine set out to document the issues systematically with respect to sugar intake recommendations from authoritative guidelines.




Dr. Fox[/caption]
MedicalResearch.com Interview with:
Dr. Caroline Fox, MD MPH
National Heart, Lung, and Blood Institute
Assistant Clinical Professor of Medicine
Harvard Medical School
Medical Research: What is the background for this study? What are the main findings?
Dr. Fox: There is evidence linking sugar sweetened beverages with obesity and type 2 diabetes. There is also evidence suggesting that specific adipose tissue depots may play a role in the pathogenesis of these diseases. We found that higher levels of
Kawther Hashem[/caption]
MedicalResearch.com Interview with:
Kawther Hashem MSc RNutr (Public Health)
Nutritionist and Researcher
Action on Sugar
Wolfson Institute of Preventive Medicine,
Queen Mary, University of London
London UK
Medical Research: What is the background for this study? What are the main findings?
Response: The calculations showed that a 40% reduction in free sugars added to Sugar Sweetened Beverages (SSBs) over five years would lead to an average reduction in energy intake of 38 kcal per day by the end of the fifth year. This would lead to an average reduction in body weight of 1.20kg in adults, resulting in a reduction in overweight and obese adults by approximately half a million and 1 million respectively. This would in turn prevent between 274,000-309,000 obesity-related type 2 diabetes over the next two decades. Policies such as this will reduce cases of overweight and obesity and type 2 diabetes, this will have a major clinical impact and reduce healthcare costs.
Prof. Rogers[/caption]
MedicalResearch.com Interview with:
Prof. Peter J. Rogers PhD
School of Experimental Psychology
University of Bristol, Bristol, UK
Medical Research: What is the background for this study?
Prof. Rogers: In recent years low-calorie sweeteners have been in the headlines because of concern that they may undermine rather than help with healthy weight management. That concern is based on selective reporting of studies and outright speculation. Our aim was to review the totality of evidence on this subject, which included results from human and animal (mouse and rat) studies.
Medical Research: What are the main findings?
Prof. Rogers: We found that randomised, controlled intervention trials in humans showed consistently that low-calorie sweeteners versus sugar consumption reduced energy intake and body weight, with no effect or even reduced body weight compared with consumption of water. These types of studies provide the strongest form of evidence – superior to animal and observational studies. In the animal studies, exposure to 














