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Br J Pain. 2012 Feb;6(1):17-24. doi: 10.1177/2049463712438299.

Opioids and endocrine dysfunction.

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1
King's College Hospital, London, UK.

Abstract

The endocrine effects of opioids used for the management of persistent pain are poorly understood by clinicians and patients, and hormone levels are rarely measured. It is recognized that opioids exert this effect via the hypothalamic-pituitary-gonadal axis. Additional effects on adrenal hormones, weight, blood pressure and bone density may also occur. Symptoms and signs of sex hormone deficiency occur in both men and women but are under-reported and are often clinically unrecognized. The potential effects of long term opioid therapy on the endocrine system should be explained to patients before opioid therapy is commenced. Monitoring of sex hormones is recommended; if there are deficiencies opioids should be tapered and withdrawn, if this is clinically acceptable. If opioid therapy has to continue, hormone replacement therapy should be initiated and monitored by an endocrinologist.

KEYWORDS:

Opioids; endocrine; hormone replacement; hypogonadism; sex hormones; testosterone

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