The statistics also implied, but this protracted sleep could have been of the lower grade than the control class and investigators think an amount of adjustment to some new pattern might be required. Among the control group, researchers saw no change.
Scientists from King's College London have discovered that people who sleep for longer are less likely to pick sugary treats, or reach for comforting carbohydrates.
86 percent of the people in the sleep consultation group increased their amount of time in bed, and half increased their actual time spent asleep, from 52 to nearly 90 minutes.
"It's not a conscious decision but on a physiological level, if you're constantly sleep deprived you're much more susceptible to biscuits lying around in your office or your cupboard", she added. While one group received advice on improving their sleeping habits, another group was left without any expert intervention.
Sleep is a modifiable risk factor for various conditions including obesity and cardio-metabolic disease with some figures suggesting a lot of adults are not getting enough sleep.
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The results showed that 86 percent of the group who received sleep advice managed to increase their time in bed by an average of 55. After a month of better sleeping, people cut their sugar intake by an average of 9.6 grams a day - around a third of the recommended daily allowance, or about half a chocolate bar.
"We hope to investigate this finding further with longer-term studies examining nutrient intake and continued adherence to sleep extension behaviours in more detail, especially in populations at risk of obesity or cardiovascular disease".
From the study, 42 healthy people of normal weight were brought; half given time to sleep well while others left to sleep for less than 7 hours.
The study has been published in the journal The American Journal of Clinical Nutrition on 8th January.
These participants were all people who previously slept less than seven hours a night, the recommended minimum time adults should sleep.
Senior study author Wendy Hall, a senior lecturer in the Department of Diabetes and Nutritional Sciences at King's College London stated that the fact that extending sleep led to a reduction in intake of added sugars, that means the sugars that are added to foods by manufacturers can be reduced inside the body through a proper sleep and it also suggests that a simple change in lifestyle can help people to consume healthier diets.