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Testosterone and neurobehavioral outcomes in special operations forces military with multiple mild traumatic brain
Nathan Barnett1,2, Milica Ljubic1, Joyce Chung1
1Polytrauma System of Care, VA Palo Alto Healthcare System, Palo Alto, CA, USA.
Background:
U.S. Special Operations Forces (SOF) are at increased risk of multiple mild traumatic brain injury (mmTBI). Testosterone was prescribed for several participants in a VA program designed to address sequelae of mmTBI for SOF.
Objective:
To determine testosterone prevalence in the Palo Alto VA Intensive Evaluation and Treatment Program (IETP) and observe for association between testosterone and neurobehavioral outcomes.
Methods:
A retrospective cohort study included patients in the Palo Alto VA IETP. Sociodemographic data, testosterone blood levels, and neurobehavioral outcomes were collected from medical records.
Results:
55 IETP participants were included: six were testosterone users; the rest were classified as non-users. Testosterone use in this population is 11%, higher than reported national averages in the U.S. Of the 6 testosterone users, 2 (33%) had a formal diagnosis of hypogonadism prior to initiation of testosterone. Neurobehavioral outcome scores between testosterone users and non-users failed to show statistically significant differences, except for the PROMIS pain score, which was higher in the testosterone user population.
Conclusion:
The current study did not find an association between mmTBI, testosterone use, or testosterone level and neurobehavioral outcomes. This study highlights a need to further examine the relationship between hypogonadism, mmTBI, SOF culture around testosterone, and the effects of testosterone use in this population.
