Associations of hair cortisol levels with violence, poor mental health, and harmful alcohol and other substance use among female sex workers in Nairobi, Kenya.

Mamtuti Panneh ORCID logo ; Qingming Ding ; Rhoda Kabuti ; Maisha Fiti study champions ; John Bradley ORCID logo ; Polly Ngurukiri ; Mary Kungu ; Tanya Abramsky ORCID logo ; James Pollock ; Alicja Beksinska ; +10 more... Pooja Shah ; Erastus Irungu ; Mitzy Gafos ORCID logo ; Janet Seeley ORCID logo ; Helen A Weiss ORCID logo ; Abdelbaset A Elzagallaai ; Michael J Rieder ; Rupert Kaul ; Joshua Kimani ; Tara Beattie ORCID logo ; (2024) Associations of hair cortisol levels with violence, poor mental health, and harmful alcohol and other substance use among female sex workers in Nairobi, Kenya. Discover Mental Health, 4 (1). 29-. DOI: 10.1007/s44192-024-00086-1
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Violence, poor mental health, and harmful substance use are commonly experienced by female sex workers (FSWs) in sub-Saharan Africa, all of which are associated with increased HIV susceptibility. We aimed to investigate the associations between violence, poor mental health and harmful alcohol/substance use with hair cortisol concentration (HCC) levels as a potential biological pathway linking the experiences of these stressors and HIV vulnerability. We used the baseline data of the Maisha Fiti study of FSWs in Nairobi, Kenya. Participants reported recent violence, poor mental health, and harmful alcohol/substance use. Hair samples proximal to the scalp were collected to measure cortisol levels determined by ELISA. We analysed the data of 425 HIV-negative respondents who provided at least 2 cm of hair sample. The prevalence of recent violence was 89.3% (physical 54.6%; sexual 49.4%; emotional 77.0% and financial 66.5%), and 29.1% had been arrested due to sex work. 23.7% of participants reported moderate/severe depression, 11.6% moderate/severe anxiety, 13.5% PTSD and 10.8% recent suicidal thoughts and/or attempts. About half of the participants (48.8%) reported recent harmful alcohol and/or other substance use. In multivariable linear regression analyses, both physical and/or sexual violence (adjusted geometric mean ratio (aGMR) = 1.28; 95% CI 1.01-1.62) and harmful alcohol and/or other substance use (aGMR = 1.31; 95% CI 1.03-1.65) were positively and independently associated with increased HCC levels. Findings suggest a role of violence and substance use in elevated HCC levels, which could increase HIV risk due to cortisol-related T cell activation. However, longitudinal and mechanistic studies are needed to confirm this hypothesis.


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