Restorative sleep originates in the gut, not solely the brain, with the gut microbiome significantly influencing sleep quality, mood, and overall wellbeing.
The gut and brain communicate via the gut-brain axis, where gut microbes produce neurotransmitters and metabolites that influence sleep-related hormones.
An imbalanced gut microbiome, known as dysbiosis, disrupts these chemical signals, leading to poor sleep, while a healthy gut supports stable production of sleep-related hormones.
Inflammation, often caused by an unhealthy gut or poor diet, interferes with sleep regulation by affecting brain regions that control alertness and rest, and by increasing stress hormones like cortisol.
Improving gut health through dietary changes (prebiotics, probiotics, reduced sugar), consistent meal times, stress management, and hydration can lead to a more stable gut environment and, consequently, deeper, more restorative sleep.