Drinking coffee before breakfast impairs blood sugar control
Researchers from the Centre for Nutrition, Exercise and Metabolism at the University of Bath examined the effect of broken sleep and morning coffee across a range of metabolic markets.
Their work, published in the British Journal of Nutrition, shows that one night of poor sleep had a limited impact on metabolism, but drinking coffee could have a negative effect on blood glucose control.
On another occasion, they experienced a disrupted night of sleep – being woken up for five minutes each hour – and were given a sugar drink in the morning.
The third test involved participants experiencing the same sleep disruption but being given a strong black coffee 30 minutes before consuming the sugary drink.
Blood samples from participants were taken following the glucose drink, which mirrored the calories of a typical breakfast, in each experiment.
Results showed that one night of disrupted sleep did not worsen the participants’ blood glucose responses at breakfast when compared to a normal night of sleep.
