90% of the Jewish immigrants to America are Ashkenazi Jews.
Nearly 60% of the world wide Jewish population is Ashkenazi and it isn’t all a bed of roses for them.
“A number of genetic disorders occur more frequently in certain ethnic populations.In the Ashkenazi Jewish population (those of Eastern European descent), it has been estimated that one in four individuals is a carrier of one of several genetic conditions.These diseases include Tay-Sachs Disease, Canavan, Niemann-Pick, Gaucher, Familial Dysautonomia, Bloom Syndrome, Fanconi anemia, Cystic Fibrosis and Mucolipidosis IV.Some of these diseases may be severe and may result in the early death of a child.Carrier screening is available for all of these diseases with a simple blood test.”