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Related Concept Videos

Insomnia01:27

Insomnia

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Insomnia is a prevalent sleep disorder characterized by difficulty falling asleep, frequent awakenings during the night, and waking up too early without being able to return to sleep. People with insomnia often experience these disruptions at least three nights a week for at least one month. Chronic insomnia, which lasts for at least three months, can lead to increased anxiety, which in turn can worsen sleep difficulties, creating a cycle of sleeplessness and stress.
Multiple factors contribute...
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Management of Insomnia

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The sleep cycle, an integral part of human health, consists of several stages with distinct characteristics and functions. It begins with a transition from wakefulness to sleep, known as the light sleep phase, followed by the restorative deep sleep phase, essential for physical recovery and growth. The cycle concludes with the Rapid Eye Movement (REM) phase, characterized by high brain activity and vivid dreaming. Insomnia, a prevalent sleep disorder, involves difficulty falling asleep, staying...
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Irritable Bowel Syndrome I: Introduction01:17

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Irritable Bowel Syndrome (IBS) is characterized by functional disturbances in the gastrointestinal system, presenting a cluster of symptoms without evident structural or biochemical abnormalities. It primarily affects the large intestine and may cause abdominal pain, bloating, excessive gas, diarrhea, constipation, or both.
IBS is a chronic condition that can persist over a long period or recur frequently.
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Anatomy of the Intestines01:23

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Although digestion of proteins, carbohydrates, and lipids may begin in the stomach, it is completed in the intestine. The absorption of nutrients, water, and electrolytes from food and drink also occurs in the intestine. The intestines can be divided into two structurally distinct organs—the small and large intestines.
Small Intestines
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Sedatives and Hypnotics Drugs: Miscellaneous Agents

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Sedatives and hypnotics encompass a wide range of substances, each with its unique mechanism of action, uses, and potential adverse effects.
Melatonin congeners like ramelteon (Rozerem) and tasimelteon (Hetlioz) selectively bind to melatonin receptors (MT1 and MT2) and thus mimic the actions of melatonin, a hormone that regulates sleep-wake cycles. Tasimelteon is primarily used for non-24-hour sleep-wake disorder, common in blind patients. They are also used to treat conditions like insomnia...
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CNS Depressants: Barbiturates and Benzodiazepines

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CNS depressants include drugs from the category of barbiturates and benzodiazepines. They are valuable medications for managing anxiety disorders and insomnia. Barbiturates, once used to induce and maintain sleep, have been replaced mainly by benzodiazepines due to barbiturate's toxicity, tolerance, and overdose risks. They interact with GABAA receptors, leading to sedation at low doses and potentially coma and death at higher doses. Phenobarbital, a long-acting barbiturate, possesses...
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Updated: Sep 11, 2025

An In Vitro Batch-culture Model to Estimate the Effects of Interventional Regimens on Human Fecal Microbiota
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Investigating bidirectional causal relationships between gut microbiota and insomnia.

Shangyun Shi1, Dongming Liu2, Ancha Baranova3,4

  • 1Department of Psychiatry, The Affiliated Brain Hospital of Nanjing Medical University, Nanjing, Jiangsu, China.

General Psychiatry
|August 18, 2025
PubMed
Summary

This study reveals reciprocal relationships between gut microbiota and insomnia. Certain gut bacteria increase insomnia risk, while others offer protection, suggesting new therapeutic avenues.

Keywords:
CausalityMendelian Randomization Analysis

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Area of Science:

  • Microbiome research
  • Sleep science
  • Genetics

Background:

  • The gut microbiota's influence on sleep is increasingly studied, but its specific interaction with insomnia remains unclear.
  • Existing research highlights potential links between gut bacteria and sleep patterns.

Purpose of the Study:

  • To investigate the bidirectional relationship between gut microbiota composition and insomnia.
  • To identify specific gut bacterial taxa associated with insomnia risk and protection.

Main Methods:

  • Mendelian randomization (MR) analysis using large genome-wide association studies datasets for insomnia and gut microbiota.
  • Utilized inverse variance weighted (IVW) as the primary method, with MR-Egger, MR-PRESSO, and leave-one-out analyses to assess heterogeneity and pleiotropy.
  • Steiger test was employed to confirm causal relationships.

Main Results:

  • Identified 14 gut bacterial taxa potentially increasing insomnia risk (OR: 1.01-1.04) and 8 taxa showing a protective effect (OR: 0.97-0.99).
  • Reverse MR analysis indicated insomnia causally affects bacterial abundance, decreasing 7 taxa and increasing 12 taxa.
  • The genus *Odoribacter* demonstrated a significant positive causal link with insomnia.

Conclusions:

  • Established reciprocal relationships between gut microbiota and insomnia.
  • Findings offer novel insights for potential prevention and treatment strategies for insomnia targeting the gut microbiome.