http://www.newscientist.com/article.ns?id=dn8202

Brain ‘buffer’ may control premenstrual moods

An emotional buffer zone in the brain may not be working as it should in women who experience premenstrual moodiness, a new study suggests.

Brain scans revealed mental processes can change across the menstrual cycle. Just before a period, at the time when some women experience premenstrual syndrome, activity in brain regions that help control emotions increased. After menstruation the activity decreased.

The study only looked at 12 women, whose moods remained steady throughout the menstrual cycle [there are women like this?]. It would be interesting to see this as a larger study and to include women who do have PMS and the accompanied experience of depression, irritability and a propensity towards outbursts of anger.

If there is an emotional buffer, then mine’s broken…

Here’s a PMS help site: http://www.pms.org.uk/

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