I wasn't all that shocked when I read this article but you might be. <a title="Centre for Menstrual Cycle and Ovulation Research" href="http://www.cemcor.ubc.ca/print/310" target="_blank">Why Does My Heart Feel Like its Doing Hurdles?</a> is a Q&amp;A from the Centre for Menstrual Cycle and Ovulation Research (CeMCOR) in Vancouver, BC.  The article is definitely worth a read if you're anywhere near peri-menopause.   I'll spoil it for those of you who don't want to read the entire thing - in the article a woman mentions that two cardiologists have suggested she undergo heart surgery to cut the electrical channels in her heart.   But Nobel Prize winning endocrinologist, Dr. Jerrilynn C. Prior the founder of CeMCOR has another idea based on her own research.  She believes that the 46 year old woman is experien