The risk of aortic stenosis doubles when a first degree relative had the disease, according to new research. The study of 4.2 million people from Danish registers also found that aortic stenosis risk increased by eight-fold in patients with ischemic heart disease and family history.<img src="http://feeds.feedburner.com/~r/sciencedaily/~4/mY7EFk2aNFQ" height="1" width="1"/>
