Meal timing has been a popular, and at times controversial, topic
of interest in nutrition. Despite much speculation over the years
as to potential advantages to specific meal timing or meal
frequencies, for many outcomes there seems to be little
pragmatically meaningful difference. For example, when accounting
for calorie and macronutrient intake, there is little to no effect
of meal timing on body composition, blood pressure, and energy
However, just because there is little evidence for the importance
of meal timing in relation to those outcomes, this should not be
interpreted to mean there is no impact of meal timing on all health
One area where meal timing may be an important factor is in
relation to glucose tolerance and glycaemic control. For example,
it has been consistently shown that eating at ‘biological night’
leads to worse postprandial glucose responses. And this could be
particularly important for those with insulin resistance,
pre-diabetes or type 2 diabetes.
Some of the most influential work in this area has been done by
Marta Garaulet’s lab at the University of Murcia. One of the
central aspects they have published on has been the interaction
between food timing and melatonin levels, and how this in turn
affects glucose tolerance and cardiometabolic markers.
In this episode, Danny and Alan discuss the topic of meal timing
and glucose tolerance, using a recent study from Garaulet et al. to
highlight some important concepts.
About the Podcast
The podcast for lovers of nutrition science! Listen to detailed discussions with researchers and leading experts about the science of nutrition, dietetics and health.