Several studies have shown that PMS tends to be more severe among women who drink alcohol, but it's not clear whether this is due to the alcohol itself or whether women reach for the bottle to cope with their symptoms
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Washington D.C.: Alcohol intake may be linked to the premenstrual syndrome, a new research has found. According to a pooled analysis by Spanish researchers, around one in 10 cases of PMS might be linked to alcohol intake. The premenstrual syndrome includes any or all of mood swings, tender breasts, food cravings, fatigue, irritability, and depression. Its severity varies from woman to woman.
Several studies have shown that PMS tends to be more severe among women who drink alcohol, but it's not clear whether this is due to the alcohol itself or whether women reach for the bottle to cope with their symptoms.
To try and find out more, the researchers, therefore, trawled research databases for relevant studies published up to May 2017 and found 19 from eight different countries, involving more than 47,000 participants.
Pooled analysis of the data from these 19 studies produced estimates showing that alcohol intake was associated with a 'moderate' heightened risk of PMS of 45 percent, rising to 79 percent for heavy drinkers.
While the design of the included studies precludes the ability to establish cause, the relatively large number and the consistency of the results suggested that alcohol may be associated with an increase in the risk of PMS, they said.
"These findings are important given that the worldwide prevalence of alcohol drinking among women is not negligible," they wrote.
Globally, the proportion of women who drink alcohol is thought to be around 30 percent, with around one in 20 (6 percent) of those heavy drinkers. But in Europe and America, the equivalent figures are higher, at almost 60 percent and over 12.5 percent, respectively.
"Based on the figures above and on our results, we estimate that 11 percent of the PMS cases may be associated with alcohol intake worldwide and 21 percent in Europe," wrote the researchers. "Furthermore, heavy drinking may be associated with 4 percent of the PMS cases in the world and over nine percent in Europe."
They speculated that if the association is causal in nature, "eliminating heavy drinking in women would then prevent one in every 12 cases in Europe."
There are some plausible biological explanations for the association found, they explained. Alcohol might boost PMS risk by altering levels of the sex steroid hormones and gonadotropin during the menstrual cycle, and/or it might interfere with the production of key 'mood' chemicals in the brain, such as serotonin, the researchers suggested.
The findings from the study are published in the online journal BMJ Open.
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