Posts with tag #Sleep architecture

Gut serotonin staying in the gut, walled off from the brain by the blood-brain barrier

Daylight, brain serotonin, and the gut's separate pool

| 7 min read

Morning light reaches brain serotonin through the eye. The gut's serotonin does not commute upstairs to become a mood.

#Dopamine #Sleep architecture
A sleep hypnogram with the largest hormone pulse sitting on slow-wave sleep

Growth hormone waits for deep sleep, not for an early bedtime

| 7 min read

The big growth-hormone pulse rides slow-wave sleep. Going to bed early does nothing if that deep sleep never arrives.

#Sleep architecture #Cortisol
A morning glucose curve sitting higher after a short night than after a full one

How a short night changes the next morning's glucose

| 7 min read

A short night raises the morning cortisol signal and makes the same breakfast harder for insulin to clear.

#Cortisol #Sleep architecture