Sex Differences in Alcohol Use: Is It All About Hormones?

Area of Science:

• Neuroscience
• Endocrinology
• Pharmacology

Background:

• Alcohol use disorders (AUD) and risky alcohol use are increasing in women.
• Biomedical research has historically focused on male subjects, leading to knowledge gaps in female alcohol consumption.
• Sex differences in alcohol's effects are increasingly recognized, necessitating focused research.

Purpose of the Study:

• To review current literature on sex differences in alcohol use and AUD.
• To examine the influence of gonadal steroid hormones, neurosteroids, and neurobiological factors on alcohol consumption in both sexes.
• To discuss how genetic, metabolic, neuroimmune, and stress response differences contribute to sex-specific alcohol intake.

Main Methods:

• Systematic literature review of clinical and preclinical studies.
• Analysis of research examining gonadal steroid hormones (estrogens, androgens, progestins) and neurosteroids.
• Inclusion of studies investigating neurobiological factors, genetics, metabolism, neuroimmune, and stress responses.

Main Results:

• Significant sex differences exist in alcohol consumption patterns and AUD prevalence.
• Gonadal steroids, neurosteroids, and neurobiological factors differentially affect alcohol use in males and females.
• Underlying genetic, metabolic, neuroimmune, and stress response variations contribute to these sex differences.

Conclusions:

• Understanding sex-based differences in alcohol use is crucial for developing effective AUD treatments for women.
• Comparative research in both sexes can identify novel therapeutic targets for AUD.
• Tailoring current treatment strategies to women's specific biological and neurobiological profiles is essential.