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For the general population, it may be advisable to abstain from eating for at least a couple of hours before bedtime
Blood sugar control, which is impaired in individuals with diabetes, is affected by various factors including the timing of meals relative to sleep as well as levels of melatonin, a hormone primarily released at night that helps control sleep-wake cycles.
In research published in Diabetes Care, a team led by investigators at Massachusetts General Hospital (MGH), Brigham and Women’s Hospital (BWH) and the University of Murcia in Spain conducted a clinical trial to look for connections between these two factors.
The team found that melatonin levels in participants’ blood were 3.5-fold higher after the late dinner. The late dinner timing also resulted in lower insulin levels and higher blood sugar levels.
Experiments revealed that the high melatonin levels and carbohydrate intake associated with late eating impairs blood sugar control through a defect in insulin secretion.
“Notably, our study does not include patients with diabetes, so additional studies are needed to examine the impact of food timing and its link with melatonin and receptor variation in patients with diabetes”, said the researchers.