This material is for informational and educational purposes only and is not medical, psychological, or psychotherapeutic advice. If you are experiencing an acute psychological condition or need professional support, please contact a doctor, psychologist, psychotherapist, or crisis service.
Evidence of a connection does not match loneliness
Lack of sleep extinguishes the desire to communicate. Walker and Simon studied 18 people in two conditions: after a normal sleep and a sleepless night. Participants in different conditions watched a video of a person walking toward them and pressed a pause button when the person got too close. The button also recorded how far the participants allowed the person to approach. It turned out that sleep-deprived people allowed a person 18-60% less distance than sleepy people.
At the same time, the participants' brains were scanned using a tomograph. It turned out that in those who did not sleep, the area of the brain that is sensitive to the immediate environment and notices threats from people works more actively. At the same time, the area of the brain that motivates communication was suppressed.
Lack of sleep infects others with loneliness. Next, Simon and Walker gained a thousand online followers. They were shown videos of the participants talking.
The observers did not know which of the participants did not get enough sleep and evaluated each person according to two criteria: how lonely the person seems and how much you want to communicate with him. Again and again, people with sleep deprivation were mistaken for singles and less wanted to communicate with them.
To find out if participants were contagious with loneliness, observers completed a loneliness questionnaire after watching the video. It turned out that the observers felt lonely even after a one-minute video with a person who did not get enough sleep.
How much sleep deprivation creates a feeling of loneliness. Participants were assessed daily for their level of loneliness using a standardized questionnaire. They answered the following questions: "How often do you feel alienated?" and "Do you feel like you don't want to talk to anyone?"
The amount of sleep accurately predicted how lonely people felt the next day. Everything was normal if a person slept the necessary 7-9 hours.
Studies show that levels of loneliness and lack of sleep have been on the rise in recent decades. Perhaps this is not accidental, because without enough sleep we become inhuman and lonely.
Consequences of lack of sleep
The less we sleep, the less we interact with others. In turn, those around us find us repulsive due to lack of sleep. A vicious circle is formed.
And although evolution has programmed us to help the weak so that the human species survives, Walker believes: sleep deprivation is not the case. "Lack of sleep is different, for example, from starvation. "There is no biological or social protection against lack of sleep, so physical and mental health deteriorates after losing even an hour of sleep," says Walker. "But there is also good news: healthy sleep makes us both sociable and more attractive to communicate with."
What will help overcome loneliness
It is impossible to work on loneliness if we do not know its cause: we do not see what needs to be repaired. For example, a person does not know that lack of sleep leads to loneliness and therefore does not improve sleep. This prevents you from establishing supportive relationships, close friends, and useful acquaintances. Knowing the causes of problems gives a sense of control. We know what to fix, get rid of uncertainty and helplessness.
In addition to sleep and loneliness, there are many things that reduce happiness. Not understanding their relationship with happiness is one of the problems that prevent us from becoming happier.
After poor sleep, emotion regulation, attention, and reading ambiguous social signals become harder. A neutral response may feel colder, while contact requires more effort. Sleep loss is not the sole cause of loneliness.
Distance after a night without recovery
The relationship works both ways
Sleep loss can hinder connection, while loneliness, anxiety, and lack of safety can disrupt sleep. “Just sleep more” may ignore health, living conditions, caregiving, or nighttime alarms.
Avoid final conclusions on the worst night
When resources are low, postpone global conclusions about relationships and check simple facts: sleep, food, recent contact, and whether distance repeatedly follows poor sleep.
Small contact still counts
A message, short walk, quiet shared activity, or “I have little energy today, but I want to stay connected” lowers the demand on an exhausted person.
Words from Dmytro Telushko
“After a sleepless night the world may genuinely feel colder. That state matters, but it is not necessarily the final truth about our relationships.”
Dmytro Telushko
Observing body and context
The Body Journal supports observation of sleep, tension, fatigue, and need for contact without self-judgment.
Body Journal
When medical assessment matters
Chronic insomnia, loud snoring with breathing pauses, persistent daytime sleepiness, or major mood decline warrant medical consultation.