How can it be prevented?

If both parents carry the genetic defect that causes Krabbe disease, there is a 25 percent chance of passing the disease to their child. The 25 percent risk of passing on the disease cannot be lowered if parents both carry the genetic mutation—the only way to avoided the risk if the carriers decide to not have children. The parents can, however, find out if they carry the gene for Krabbe disease through a blood test. If there is a family history of Krabbe disease, prenatal tests can be done to screen the fetus for the condition. Genetic counseling is recommended for people with a family history of Krabbe disease if they are considering having children.