What is the life span of the people hasving osteogenesis imperfecta? do they die at a young age?

Depends on the type: Type1 --life expectancy is slightly reduced compared to general population due to the possibility of fatal bone fractures and complications related to type 1 type2 most cases die within first year, due to res failure or intracranial hge type3 lifespan may be normal with physical handicaps type4, 5, 6, 7, 8 may have normal life span with deformities.