Areas of Interest

My PhD research investigated the short and longer term metabolic effects of intermittent fasting, encompassing intermittent energy restriction (e.g. the 5:2 diet) and time-restricted eating. I also ran the first study of the 5:2 diet within a ‘real life’ NHS weight-management service.


I am currently working on a large BBSRC funded study which aims to identify the reasons people respond so differently to saturated fat, a type of fat that is linked to raised LDL (“bad”) cholesterol which is a well established risk factor for heart disease. Moreover, by applying state of the art laboratory techniques we aim to develop a simple blood test that can be used to predict an individual’s responsiveness to saturated fat, and hence whether they would benefit from cutting down or not.

I have also been involved in an array of different research projects happening at the University of Surrey:

  • Health effects of sweeteners

  • Low carbohydrate diets

  • Vitamin D, food fortification and bone health

  • Effects of dietary fats on health markers

Published Papers


Antoni R., Johnston KL, Collins AL and Robertson, MD (2014) The effects of intermittent energy restriction on indices of cardiometabolic health
Res Endocrinol. Article ID 459119

Antoni R, Johnston KL, Collins AL and Robertson MD (2017) Effects of intermittent fasting on glucose and lipid metabolism. Proc Nutr Soc 76 (3), 361-368

Antoni R, Johnston KL, Steele C, Carter D, Robertson MD and Capehorn MS (2019). Efficacy of an intermittent energy restriction diet in a primary care setting. Eur J Nutr


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