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The power of your gut

The early bird catches the best microbiota

Sleep
The gut microbiota Diet Mood disorders Obesity Type 2 diabetes

The difference between night owls and early birds?
Their bedtime, of course! But that’s not all. Their biological clock is also reflected in their gut microbiota.

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About this article

Created 17 January 2022
Updated 25 January 2022

Some are morning people, others prefer the evening. But what makes us an early bird or a night owl? Recent scientific research suggests that bacteria in the gut may influence our biological clock, with early birds and night owls shown to have very different gut microbes.

Early to bed vs. late to bed: specific microbiota

An analysis of the gut microbiota of 91 individuals has shown a greater abundance of the bacterial genus Alistipes in the gut microbiota of early sleepers. These people generally have bowel movements in the morning, eat a healthy diet (rich in fruit, vegetables, and fiber), and drink water regularly.

On the other hand, night owls have a greater quantity of Lachnospira in their gut. They go to the toilet in the evening, following a day of unhealthy food (e.g. rich in sugars) washed down with soda. The bacteria in our digestive tract produce molecules that act on our own body. These molecules cause a set of chemical reactions (known as metabolic pathways) which lead to the production of certain compounds (e.g. glucose) and/or the degradation of others. Three metabolic pathways were found to be significantly more common in early sleepers.

The authors therefore propose that certain human metabolic pathways are activated by specific bacterial fatty acids involved in the regulation of our sleep. This may be the missing link between all these data: a given diet has a specific microbiota, which secretes molecules that influence the rhythm of the host’s sleep.

Read also
Several studies have shown that sleep is highly dependent on the quality of the…

Improving night owls’ health

The scope of these observations is important, going beyond the mere issue of harmony in families with both early and late sleepers. Indeed, night owls are more likely to develop:

15.10.2020 Mood disorders Read more
03.08.2021 Obesity Read more
03.08.2021 Type 2 diabetes Read more

...and other chronic diseases.

This research suggests it may be possible to improve their health by altering their diet and, therefore, their gut microbiota. This may help the night owls go to bed with the early birds.

Sources

Carasso S, Fishman B, Lask LS, et al. Metagenomic analysis reveals the signature of gut microbiota associated with human chronotypes. FASEB J. 2021 Nov;35(11):e22011.

Tags
Sleep Diet Sleep disorder Fatigue

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    Actu GP : Le microbiote intestinal, la clé d’un sommeil de qualité ? Is the gut microbiota the key to high-quality sleep?
    Actu GP : Insomnie, microbiote et inflammation : des liens avérés ? Confirmed links between insomnia, microbiota, and inflammation?
    Created 17 January 2022
    Updated 25 January 2022

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