Jewish genetically transmitted diseases

That only effect the Jewish people? The list is near endless but here’s a small sample of ailments, quite a few are exclusive to their people. Chosen for disease one might say? If there are any explanations or theories behind this I would like to know.
Alpha 1-anti-trypsin Deficiency
Amyotrophic Lateral Sclerosis
Aut. Dom. Optic Atrophy
Aut. Dom. Retinitis pigmentosa
Bardet Biedl syndrome
Berger’s Disease
Beta-thalassemia
Bloom Syndrome
Canavan disease
Celiac Disease, or Sprue
Color-blindness
Con. Stat. Night Blindness
Congenital blindness
Congenital deafness
Corneal Dystrophy
Crohn’s Disease
Cystic fibrosis
Dwarfism
Hereditary Hearing Loss
Kaposi’s sarcoma
Lactose intolerance
Leber’s congenital amaurosis
Lipoamide Dehydrogenase-
Deficiency
Early rheumatoid arthritis, often
occurring in childhood
Elephant man’s disease- Proteus
syndrome
Fabry Disease
Factor XI deficiency
Familial Dysautonomia
Familial Hypercholesterolemia
Familial hyperinsulinemia
Familial Mediterranean fever
Fanconi Anemia
Gaucher Disease
Glucose-6-phosphate-
dehydrogenase deficiency
Glycogen storage disease type 1a
Glycogen storage disease type III
Machado Joseph Disease
Malformed limbs
Maple syrup urine disease
Mucolipidosis IV
Multiple Sclerosis
Muscular Dystrophy
Nemaline Myopathy
Niemann-Pick disease
Non-Classical Adrenal Hyperplasia
Non-syndromic sensorineural
Progeria
Psychotic disorders- abnormally high incidence of
Rib cage misaligned
Stargardt disease
Tay Sachs
Temperature intolerance
Thalassemia
Torsion Dystonia
Type III Glycogen Storage disease
Usher Syndrome Type 1F
Vitelliform Macular Dystrophy
Wilson disease