Hormonal and biochemical factors that affect alcohol dependence (also known as alcohol use disorder), suggesting that men and women with alcohol problems require different treatments, finds a study.
While
it has been previously known that men and women have different risks related to
alcohol misuse and related problems, the biological mechanisms underlying those
differences are not well understood.
"This
is the first large study to confirm that some of the variability in alcohol use
disorder (AUD) and related problems is associated with particular combinations
of hormones and chemical biomarkers in men and women," said lead
researcher Victor Karpyak, Professor of Psychiatry at Mayo Clinic in Rochester,
Minnesota (US).
Karpyak
said this means that "sex-specific treatments can be tailored to improve
responses for men and women with alcohol problems".
The
researchers focussed on hormonal and protein markers of 268 men and 132 women
with AUD; and correlated them with psychological markers, such as depressed
mood, anxiety, craving, alcohol consumption, and treatment outcomes during the
first 3 months of treatment.
At the
beginning of the trial -- before anyone had taken any medication -- the
researchers tested men and women for several sex-specific blood markers,
including sex hormones (testosterone, oestrogens, progesterone) as well as
proteins known to impact their reproduction (such as follicle-stimulating
hormone, and luteinizing hormone) or bioavailability of these hormones in the
blood (albumin and sex hormone-binding globulin).
They
found that men with alcohol use disorder, symptoms of depression, and higher
craving for alcohol, also had lower levels of the hormones testosterone,
oestrone, oestradiol, as well as the protein sex hormone binding globulin.
However,
no such associations were found in women with AUD.
Further,
women who had higher levels of testosterone, sex hormone-binding globulin, and
albumin were also more likely to relapse during the first three months of
treatment compared to women with lower levels of those biochemical markers.
But
"no such relationships were found in men," Karpyak said.
Karpyak
said this implies that what works for a man may not work for a woman, and vice
versa. The researcher also called for further studies to understand the
differences between men and women with AUD to tailor treatment options.
The
study was presented at the ongoing European College of Neuropsychopharmacology
(ECNP) Conference in Milan, Italy.
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