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Post-Meal Sleepiness Is Due To Salt and Protein In Food

by Hannah Joy on November 23, 2016 at 1:56 PM
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Post-Meal Sleepiness Is Due To Salt and Protein In Food

Sleeping patterns depend on consumption of large meals and also intake of high amounts of protein and salt which lead to longer duration of sleep after a meal in both humans and fruit flies.

Researchers at The Scripps Research Institute in the US created a system that can measure both the sleep and feeding behaviors of individual fruit flies and discovered that, in much the same way as humans, the insects sleep for longer periods following larger meals.

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Further studies also revealed that certain types of food can promote post-meal sleep.

To understand this relationship better, William Ja and his team created the Activity Recording CAFE (ARC), a system for flies that enables visual tracking of food consumption and insect motion.
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Recordings of fruit flies' behaviour from this system revealed that after eating a meal, the insects sleep more before returning to a normal state of wakefulness.

The sleep period generally lasts around 20 to 40 minutes, with flies that eat larger portions generally sleeping more.

To determine if individual nutrients could modulate post-meal sleep, the team gave the flies food consisting of protein, salt or sugar.

The study, published in the Journal eLife, suggesting that this form of sleep can indeed be regulated by specific food types.

"The ARC provides a starting point for future studies aimed at uncovering the exact genes and circuits that enable meal size, protein and salt to drive sleep," Ja said.

"As sleep is a vulnerable state for animals in nature, it will be interesting to discover why post-meal naps are necessary," Ja added.

Source: IANS
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