Hyperthermia and endorphins.
Level 5 - mechanism / opinion, no new human data
Narrative review synthesizing existing literature without systematic methodology or original data.
PubMed 8061252 · doi:10.1016/0753-3322(93)90078-y
What was done
The author reviewed literature discussing the role of central nervous system endogenous opioids (specifically beta-endorphin) and ACTH in adaptation to heat stress (such as sauna-induced hyperthermia) in healthy individuals compared to individuals with heroin, cocaine, or alcohol addiction.
What was found
The abstract reports no numerical values. It describes that while hyperthermia typically triggers pituitary secretion of beta-endorphin and ACTH, these hormonal responses to sauna-induced heat stress are absent in heroin, cocaine, and alcohol addicts. The authors attribute this to chronic disruption of hypothalamic opioid neurotransmission.
Why it matters
It suggests that chronic substance abuse alters central neuroendocrine pathways required for thermoregulatory adaptation to heat stress.
Limits
As a narrative review, it lacks systematic search criteria, meta-analytic data, and quality assessment of cited studies. The abstract provides no sample sizes, effect sizes, participant demographics, or detailed experimental protocols.
Cited by
- partial Sauna exposure alters brain function and modulates the opioid system by increasing sensitivity to endorphins.