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Do testosterone levels relate to aggression in elderly men with dementia?
Claudia Orengo1, Mark E Kunik, Victor Molinari
1Veterans Affairs Medical Center and Baylor College of Medicine, Houston, Texas 77030, USA. corengo@bcm.tmc.edu
Summary
In older men with dementia, higher free testosterone levels were linked to increased aggression. Conversely, higher estrogen levels correlated with decreased aggression in this population.
Area of Science:
- Gerontology
- Neuroendocrinology
- Psychiatry
Background:
- Dementia is associated with behavioral disturbances, including aggression.
- Hormonal changes, particularly in testosterone and estrogen, may influence aggression in aging men.
- Understanding these correlations is crucial for managing dementia-related behaviors.
Purpose of the Study:
- To investigate the relationship between testosterone and estrogen levels and aggression in older men diagnosed with dementia.
- To differentiate aggression from agitation in behavioral assessments.
Main Methods:
- Measured plasma total and free testosterone and estrogen levels in 50 elderly males with dementia.
- Assessed behavioral disturbances, specifically aggression, using standardized scores.
- Employed Pearson correlations and linear regression analyses to examine hormone-aggression associations, controlling for covariates.
Main Results:
- Free testosterone levels demonstrated a significant positive correlation with aggression.
- Estrogen levels exhibited a significant negative correlation with aggression.
- These associations remained significant after controlling for age, medical burden, and dementia severity.
Conclusions:
- Hormonal profiles, specifically free testosterone and estrogen, are significantly associated with aggression in older men with dementia.
- Findings suggest potential hormonal targets for managing aggression in this demographic.
- Further research is warranted to explore the clinical implications of these hormonal influences.