Weeping through a Lifetime movie right now? Study says don't blame PMS Are you irritable, crying at pet food commercials and shoving handfuls of chocolate into your open mouth? Don't blame it on PMS. A study from New Zealand's University of Otago traced women's moods at every stage of their menstrual cycle, discovering that only 15 percent had what were deemed "classic" PMS symptoms. They agree that cycle-related hormone changes can affect women's mindsets, but those changes aren't necessarily related to the onset of menstruation. So why do we think it's PMS? The researchers blame "a long-established tendency to label women's behavior as overly emotional and to attribute this to female reproductive function." YOU UNDERSTAND US? We could cry … and it's not because of PMS. [Source] For many women, premenstrual syndrome, or PMS, is a familiar preamble to their monthly cycle. But a new review of the data suggests that mood changes aren’t as closely tied to menses as many have assumed. A team led by Dr. Sarah Romans of the University of Otago in New Zealand reviewed 47 studies that followed women’s moods across the menstrual cycle. Only 15% of the studies found that women tended to have “classic” PMS: moods that worsened as the menstrual period approached and lifted when menstruation occurred. An additional 38% found PMS that lasted into menstruation or another cycle phase. (MORE: Stress Leads to Worse PMS Symptoms) However, a further 38% of the studies found no association between mood and any particular phase of the cycle. And 9% found that the worst moods actually occurred outside of the premenstrual phase. That means that little more than half of the studies (53%) found any link between menstruation and bad mood, and 85% didn’t find classic PMS. “The major finding of this review was that clear evidence for a specific premenstrual-phase-related mood occurring in the general population is lacking,” the authors conclude. Nonetheless, the idea of moodiness occurring cyclically in women has a long-standing history. The authors cite a “long-established tendency to label women’s behavior as overly emotional and to attribute this to female reproductive function.” (MORE: Got PMS? Milk Marketers Launch an Audacious, Funny New Ad Campaign) Read more: http://healthland.time.com/2012/10/22/pms-is-a-myth-new-study/#ixzz2ACJtz3S5 .