Psychedelics and Respiratory Health: A Literature Review

Area of Science:

• Neuroscience
• Pharmacology
• Respiratory Medicine

Background:

• Psychedelic compounds are known for neuropsychological effects, but their impact on respiration remains unclear.
• Assessing respiratory effects is crucial given psychedelics' growing therapeutic interest and respiration's physiological significance.

Purpose of the Study:

• To review existing evidence on the respiratory effects of psychedelics.
• To explore potential mechanisms including serotonergic modulation, anti-inflammatory actions, and bronchodilation.

Main Methods:

• A narrative literature review was conducted.
• Searches targeted PubMed, Scopus, and Google Scholar for studies measuring respiratory parameters.
• Evidence from preclinical, clinical, and mechanistic studies was compiled.

Main Results:

• Preclinical studies suggest psychedelics may modulate respiration via central nervous system pathways, airway smooth muscle, and anti-inflammatory mechanisms.
• Rodent models showed respiratory modulation, but human studies have not confirmed bronchodilatory effects.
• Methodological limitations and a focus on neuropsychiatric outcomes hinder respiratory research in humans.

Conclusions:

• Animal studies suggest potential respiratory benefits of psychedelics, but clinical applicability is uncertain.
• Standardized respiratory outcome measures and ethically sound study designs are needed for future research.
• Elucidating central-peripheral connections through combined neurophysiology and respiratory measures is recommended.