Alone in the Dark , Cortisol & Circadian Rhythms


Recent research suggest that the average UK citizen is afflicted by disruption to the circadian rhythm , particularly during the early hours of the morning . The research was conducted by neuroscientists at the University of Bristol and is based on the analysis of 800 million twitter feeds over a four year period . The Twitter feeds were examined for key words which may suggest an underlying emotional state .

The research was conducted in 2017 and the research paper was recently published in the science journal PLOS One .

The research paper was also reported in the MSM today .

The Evening Standard article states :

“Words and language used at 6am correlated with a more logical and positive way of thinking.”

“The paper, published in the journal PLOS ONE, also found that thoughts of death and existential angst peaked in the early hours…..”

“The second factor, with a peak expression time starting at 3am to 4am, linked with the language of existential concerns.”

“These shifts also occur at times associated with major changes in neural activity and hormonal levels, suggesting possible relations with our circadian clock,”

“Circadian rhythms are a major feature of most systems in the human body, and when these are disrupted they can result in psychiatric, cardiovascular and metabolic disease.”

The Express article states :

“You are one person in the morning, and a different person in the night.”

“The ‘morning type of thinking’ was ‘analytical, active, focused'”

“Thoughts of death and existential angst also peaked in the night-time period, particularly the early hours, the study found.”

The study

The Bristol University study published at PLOS One is titled “Circadian mood variations in Twitter content” .

The graph below clearly shows that words associated with death , health , sex , religion & anger start to rise in the late evening and peak at around 4 am in the morning .


To quote from the research paper :


Circadian regulation of sleep, cognition, and metabolic state is driven by a central clock, which is in turn entrained by environmental signals.


We reveal strong, but different, circadian patterns for positive and negative moods. The cycles of fatigue and anger appear remarkably stable across seasons and weekend/weekday boundaries. Positive mood and sadness interact more in response to these changing conditions. Anger and, to a lower extent, fatigue show a pattern that inversely mirrors the known circadian variation of plasma cortisol concentrations. Most quantities show a strong inflexion in the morning.

This suggests an endogenous non-photic signal is involved in anger and
fatigue-perhaps related to sleep and HPA activity (Pilorz, 2016).

Existential thinking is dominant late in the night, during this time the positive emotions are low, death and religion are the main concerns in the population.

The second leading factor (F2) peaks in the late night with maximal expression between 3am and 5am…….

The second leading factor (F2) is maximally expressed in the late night, the most prevalent category on the social platform before the time of peak is death…..

There is certainly evidence that emotionality may  be closely associated with cortisol levels (Pariante and Lightman, 2008) and even to circadian cortisol release (Miller et al., 2016). In the light of this, the relationship we find for anger and to a lower extent fatigue that inversely mirror the known circadian variation of plasma cortisol concentrations is quite striking.

The full research paper is available at the links below :

  1. Diurnal variations of psychometric indicators in Twitter content
  2. Circadian mood variations in Twitter content (PDF)


Cortisol is a glucocorticoid class of hormone secreted by the adrenal gland , cortisol is often termed the ‘stress hormone’ . Partial sleep deprivation can raise cortisol levels in the bloodstream , this in turn leads to further elevated cortisol levels and a continually disrupted sleep cycle .

Continually raised levels of cortisol can cause a wide variety of adverse health effects , cortisol can also act as an immunosuppressant .

Increased levels of cortisol in the bloodstream can lead to :


  • Impaired cognitive performance
  • Suppressed thyroid function
  • Blood sugar imbalances such as hyperglycemia
  • Decreased bone density
  • Decrease in muscle tissue
  • Higher blood pressure
  • Lowered immunity and inflammatory responses in the body, slowed wound healing, and other health consequences
  • Increased abdominal fat



It would be interesting to see if these results are reproduced at a global level , maybe it is just UK citizens that are affected ? A sleep deprived population could become more docile and receptive to control and conditioning factors . It should go without saying that the associated health issues would lead to a windfall for big pharma and medical conglomerates . Sleep deprivation has also been linked to a rise in crime , particularly youth crime , a boon for the military intelligence complex .

The study results could be interpreted as a sign that in the UK , people are simply over worked , over stressed and sleep deprived , leading to a disruption of the emotional state & critical thinking .

Or perhaps there is another reason , less visible , yet still efficiently lethal .

Related :

  1. Sleep & Subliminal Hypnotic Triggers
  2. A brief history of sleep deprivation and torture
  3. Five Cults that Used Sleep Deprivation to Control Followers
  4. Cults , Brainwashing and Mind Control In The US
  5. 100 Police Officers Received Psychological Help after Salisbury Attack

Further reading :

  1. Teenage suicides in London rise by 107%
  2. US suicide rate has risen nearly 30% since 1999, federal study finds
  3. UK student suicide rate ‘rises by 56 per cent in 10 years’
  4. Anthony Bourdain’s death highlights rising suicide rate among middle-aged adults
  5. Suicide rate among young women doubles in a decade
  7. Electronic Slavery , Sodomy & Satanism
  8. Schwannomas , Cancer & Radio Frequency Radiation
  9. Possible Insomnia Predicts Some Risky Behaviors Among Adolescents When Controlling for Depressive Symptoms
  10. Poor sleep as a potential causal factor in aggression and violence
  11. Sleep and delinquency: does the amount of sleep matter?


This entry was posted in Psychotronic Warfare, Science, State Surveillance & Control. Bookmark the permalink.

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