>In particular, consanguinity is still widely practiced and might reach 50% of the total marriages in the Palestinian population

>Studies have confirmed an increase in several genetic disorders due to inbreeding such as blindness, hearing loss, neonatal diabetes, limb malformations, disorders of sex development, schizophrenia and several others.

https://www.researchgate.net/publication/259955547_Consanguinity_profile_in_the_Gaza_Strip_of_Palestine_Large-scale_community-based_study