I am a nutritional scientist with a research focus on gastrointestinal function and energy intake regulation in humans. The aim of my research is to understand (1) how any changes in gut function in obesity derail the appetite-regulatory and, thus, reinforce weight gain, ans (2) the role of gut function in the pathophysiology of digestive symptoms in patients with functional dyspepsia.
Dietary Nutrients As Novel Therapeutic Approaches To Appetite Regulation In Health And Disorders Of Eating
Funder
National Health and Medical Research Council
Funding Amount
$687,975.00
Summary
The goal of the proposed work is to translate the discoveries from our research on the effects of dietary nutrients, including specific fatty acids and amino acids, on energy intake suppression and blood glucose control into novel, and effective, nutrient-based prevention, management and treatment strategies for people with obesity and type 2 diabetes. Thus, our work will not only generate important new knowledge, but also lead to major health outcomes for the benefit of the general public.
Effects Of The Fatty Acid, Lauric Acid, On Energy Intake And Gut Motor And Hormonal Function In Health And Obesity
Funder
National Health and Medical Research Council
Funding Amount
$744,645.00
Summary
Obesity is largely due to energy intake exceeding energy expenditure, thus, strategies that reduce energy intake will result in weight loss. We discovered recently that the fatty acid, lauric acid, markedly reduces energy intake. Our studies will determine the effects of lauric acid on energy intake and body weight reduction in obese subjects. The research is a new initiative and explores the potential of lauric acid as a novel, nutrient-based and side-effect free approach to obesity management.
Ageing And Latelife Health: Calories, Macronutrients Or Branched Chain Amino Acids?
Funder
National Health and Medical Research Council
Funding Amount
$746,459.00
Summary
The prevailing dogma of ageing research has been that a substantive reduction in caloric intake maintained over a lifetime will delay ageing and age-related pathologies (caloric restriction - CR). Yet CR does not differentiate between the effects of reduced intake of calories versus specific macronutrients, nor can it assess the impact of balance of macronutrients. This application seeks to disentangle the role of CR and macronutrients on their effects on healthspan and lifespan in mice.
Effects Of Dietary Protein On Gastrointestinal Function: Implications For The Regulation Of Energy Intake In Obesity
Funder
National Health and Medical Research Council
Funding Amount
$677,157.00
Summary
Obesity is largely due to energy intake exceeding energy expenditure. The CI has reported that dietary protein markedly reduces energy intake but the mechanisms underlying this effect remain unknown. The proposed studies will determine whether gastrointestinal mechanisms are involved in the regulation of appetite and energy intake and how they relate to body weight reduction in obese subjects. The research represents a unique approach to the management of obesity and health.
Gastrointestinal Function And Appetite In Obesity - Acute And Longer-term Effects Of Changes In Energy Intake
Funder
National Health and Medical Research Council
Funding Amount
$744,645.00
Summary
The prevalence of obesity is assuming epidemic proportions. While weight loss diets help people to lose weight, body weight stabilises over time despite continued dieting. Our research proposal represents a novel initiative with the aim to understand the adaptations in gastrointestinal mechanisms in response to acute and longer-term dietary restriction that compromise weight loss. Ultimately our research will help to develop weight loss strategies that are successful in the long-term.
Achieving More Effective Weight Loss With Intermittent Energy Restriction
Funder
National Health and Medical Research Council
Funding Amount
$1,373,874.00
Summary
Part of the difficulty in achieving lasting weight loss is that the body responds to dieting with compensatory changes in appetite, metabolic rate & blood hormone levels. We have shown in men that alternating phases of energy restriction with periods of greater food intake markedly improves weight loss by overcoming this “famine reaction”. This study will examine if the intermittent diet also produces more effective weight loss in women, and whether it is applicable to the wider community.
An Investigation Of Physiological Adapatations Contributing To Weight Regain After Weight Loss
Funder
National Health and Medical Research Council
Funding Amount
$405,897.00
Summary
Why we gain weight, and why it s hard to maintain weight loss, is the focus of this study. We can regulate food intake by voluntary control in the short term ( dieting ), but our long term ability to control food intake is more complex. Many proteins work together to regulate food intake, as do circulating factors in our blood. Before and after weight loss, subjects feelings of hunger and satiety will be examined so that we can identify pathways that are involved in successful weight loss.
Effects Of Dietary Amino And Fatty Acids On Energy Intake And Glycaemia - Implications For Novel Approaches To The Management Of Obesity And Type 2 Diabetes
Funder
National Health and Medical Research Council
Funding Amount
$584,032.00
Summary
Current obesity treatments are limited in efficacy or have adverse effects. Our research has shown that specific fatty acids and amino acids markedly suppress energy intake and reduce blood glucose, without adverse effects. The goal of the proposed work is to evaluate the translational potential of these discoveries in obese diabetic patients. Ultimately, we hope to develop the findings from this research into novel, nutrient-based strategies for the management/prevention of obesity/diabetes.
Long-term Metabolic Effects Of Stress And Antidepressants: A Novel Translational Animal Paradigm Of Drug-induced Obesity
Funder
National Health and Medical Research Council
Funding Amount
$518,231.00
Summary
Do antidepressants contribute to Australia's obesity epidemic? Millions of Australians are treated with antidepressants, which often causes weight gain. Our work shows that even brief exposure to antidepressants exacerbate body weight gain following exposure to chronic stress. This new knowledge represents a significant shift in the understanding of antidepressant-related weight gain. In this project we will study the mechanisms involved in long-term weight gain after exposure to stress and anti ....Do antidepressants contribute to Australia's obesity epidemic? Millions of Australians are treated with antidepressants, which often causes weight gain. Our work shows that even brief exposure to antidepressants exacerbate body weight gain following exposure to chronic stress. This new knowledge represents a significant shift in the understanding of antidepressant-related weight gain. In this project we will study the mechanisms involved in long-term weight gain after exposure to stress and antidepressants in an obesogenic environment.Read moreRead less