There are now 2-3 studies which have supported this connection. Each has shown about a doubling of the risk for NEW development of asthma in women without any history of asthma. Although asthma is more common in children, and about 60% of the time begins in childhood, up to 15-20 % of all asthma in women begins around the time of menopause or a little after. We don't really know the reasons, but, like migraine headaches and other things, there is believed to be a hormonal connection. If about 7% of people have asthma (250 million people, that is 17.5 million people total. A little more than half are women (9-10 million total), then about 1/2 million women (in ROUGHEST TERMS) will end up getting asthma around the time of menopause, either before or after. SO, quite a large number. Hope that helps.