For women with a history of migraine estrogen levels are likely to drop more rapidly in the days just before menstruation than they do for women who do not have migraine history finds a new study. The findings showed that the women with a migraine history had a faster rate of estrogen -- sex hormone -- decline regardless of whether they had a migraine during that cycle or not. In the two days after the peak estrogen level in the period after ovulation and before menstruation the estrogen levels in the women with migraine dropped by 40 percent compared to
