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NatWonk – Dr Bier’s Research Reviews

NatWonk – Dr Bier’s Research Reviews

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Category: Sleep

Sex and Sleep: Perceptions of Sex as a Sleep Promoting Behavior in the General Adult Population

April 3, 2026
| No Comments
| Sleep

Comment: Although this study uses perception of sleep versus measured metrics and could suffer from recall bias, I tend to trust people’s perception of how well they sleep, and this one shows significant improvements with sexual activity. Gender differences in sleep perception exist for partnered sex alone, however these disparities effectively vanish if an orgasm […]

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Use of Sedative-Hypnotics and Mortality: A Population-Based Retrospective Cohort Study

January 12, 2026
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| Medications - General Pharmaceuticals, Sleep

Comment: A central discrepancy revealed in this research is the failure of Z-drugs, or specifically zolpidem, to deliver on their promise of clinical safety. Despite conventional wisdom suggesting they are a safer class, the data confirms that sedative-hypnotic users as a whole faced a significantly higher mortality risk than non-users. This human clinical data provides […]

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Use of Sleep Medications and Mortality: The Hordaland Health Study

January 12, 2026
| No Comments
| Medications - General Pharmaceuticals, Sleep

Comment: A central issue in sleep medicine is the conflict between the risk of not sleeping, and the risk of taking sedative-hypnotics to help sleep. Most people assume medication induced sleep is better than not sleeping. This 15-year prospective data confirms that daily usage is associated with nearly three times the hazard of death compared […]

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Tryptophan Intake in the US Adult Population Is Not Related to Liver or Kidney Function but Is Associated with Depression and Sleep Outcomes

November 28, 2025
| No Comments
| Sleep

Comment: It’s Thanksgiving, and I figured it would be fun to see if there was any actual research on turkey and sleepiness. There isn’t, but I came across this interesting study showing that tryptophan is associated with both improved sleep and decreased depression symptoms. Despite it’s reputation, turkey is actually about equivalent in tryptophan to […]

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