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‘When you eat’ is as important as ‘what you eat’

The time of day that you eat could be just as important to your wellbeing as the food you consume, a new study has found.

According to the researchers who conducted the study, this could have particularly serious implications for those who suffer from jet lag after travelling abroad, and for workers who regularly do inconsistent shifts.

The study’s findings, which were published in medical journal Cell and funded by the Medical Research Council (MRC), identify insulin as the primary signal which helps your body clock recognise when it’s an appropriate time to eat.

The scientists outline how the release of the hormone while eating triggers the stimulation of a protein called “Period”, which affects the circadian rhythm of the body’s cells.

Therefore, when a person eats at an unusual time of day, this causes their body clock to become disrupted, which can lead to health concerns including cardiovascular disease and type 2 diabetes.

The researchers believe that this new understanding regarding the role of insulin may help alleviate poor health caused by body clock disruption.

They explain that this could be done by either ensuring that individuals eat at specific times of day, or prescribing drugs that target insulin signalling to those who need them.

For the study, which was carried out by a team from the MRC Laboratory of Molecular Biology (LMB) in Cambridge and the University of Manchester, the researchers conducted experiments on cultured cells, which they then replicated with mice.

When conducting their experiment with mice, the researchers found that when they fed their subjects food at times of day when the mice would usually be resting, this caused their natural circadian rhythms to be disrupted.

“At the heart of these cellular clocks is a complex set of molecules whose interaction provides precise 24-hour timing,” explains Dr John O’Neill, research leader at the MRC LMB in Cambridge.

“What we have shown here is that insulin, released when we eat, can act as a timing signal to cells throughout our body.”

The body’s circadian rhythm determines many behaviours, including when the body is ready for bed, when it’s in need of sustenance, its hormone levels and its response to medication.

TNT Food & Drink

Photo Credit: Pixabay

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