Abstract
Purpose of Review
The aim of this review is to outline the anatomical and physiological processes involved in vaginal lubrication and to examine the current options for its measurement in the laboratory.
Recent Findings
The literature suggests that androgens and estrogens play a crucial role in the maintenance of vaginal structure and vascular functions, thereby delivering positive downstream effects on vaginal lubrication. Estrogens and androgens help maintain healthy genital tissue and capillary beds. During sexual arousal, interactions among these hormones with various peptides encourage genital vasocongestion, which, by way of increased pressure on surrounding cells, is believed to facilitate lubrication. Litmus strips and Schirmer Tear Test strips circumvent many pitfalls of previous objective measurements and appear to be viable methods for assessing vaginal lubrication in the laboratory.
Summary
Vaginal lubrication is believed to result from increased vasocongestion and appears to be modulated by sex steroid hormones. Preliminary support has emerged for the use of litmus strips and Schirmer Tear Test strips to measure lubrication in response to sexual films in the laboratory, though more research is needed to determine the psychometric properties of these applications.
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Handy, A.B., McMahon, L.N. & Meston, C.M. Local Responses to Genital Arousal — Mechanisms of Lubrication. Curr Sex Health Rep 14, 247–253 (2022). https://doi.org/10.1007/s11930-022-00350-x
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DOI: https://doi.org/10.1007/s11930-022-00350-x