In Saudi Arabia, if you’re planning to tie the knot, there’s a step you must go through that doesn’t happen anywhere else: You have to get a test for genetic disease. Hereditary blood diseases like sickle cell and beta thalassemia are prevalent in this part of the world, where marriage between cousins is common. A new awareness campaign around genetic disorders aims to reduce the spread of these illnesses.

In Saudi Arabia, if you’re planning to tie the knot, there’s a step you must go through that doesn’t happen anywhere else: You have to get a test for genetic disease. Hereditary blood diseases like sickle cell and beta thalassemia are prevalent in this part of the world, where marriage between cousins is common. A new awareness campaign around genetic disorders aims to reduce the spread of these illnesses.