A long-held belief that women are moody in the days before their period is largely a myth, according to a New Zealand researcher.
Drawing on 41 studies dating from 1971 to 2007, Dr Sarah Romans and colleagues at the University of Toronto found little evidence to support the theory that there is a link between mood and the pre-menstrual phase.
Just 15 percent of the studies reported negative mood in this phase while 38 percent found no link at all. Another 38 percent of the studies found there was a link during the pre-menstrual phase but also during the menstrual phase. And in 9 percent of studies, women had negative moods at a time unconnected to their period.
"A very small proportion found a pre-menstrual dip in mood, most of them found no link between women's depression and anxiety and their menstrual cycle."
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