Most types of dwarfism are caused by a genetic change (mutation) in an egg or sperm cell that happens before the start of pregnancy (conception). Others happen because of a genetic change(s) inherited from one or both parents. Genetic changes happen randomly. There is nothing a parent could do before or during pregnancy to prevent this change from happening. A genetic counselor can help determine the chances of having a child with dwarfism.
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Most types of dwarfism are caused by a genetic change (mutation) in an egg or sperm cell that happens before the start of pregnancy (conception). Others happen because of a genetic change(s) inherited from one or both parents. Genetic changes happen randomly. There is nothing a parent could do before or during pregnancy to prevent this change from happening. A genetic counselor can help determine the chances of having a child with dwarfism.