I'm jewish am I more susceptible to having vascular diseases?

Family history? Not necessarily, if there aren't any family history of vascular diseases. Some genetic traits are more prevalent in certain ethnic populations, but that doesn't mean that every individual member of that ethnicity is predisposed. Talk to your doctor. (thanks to jin packard, med student).
No. Certain types of jewish heritage predispose to various conditions, but not vascular disease. There are many other factors you can goto whatsmyheartrisk.Org to review your risk, then discuss with your doctor on how to minimize.