The Causes of Huntington's Disease

Huntington's Disease is caused by a genetic mutation on chromosome 4. They can tell if you have it by if you have a CAG repeat. In a normal human CAG should repeat 10 to 35 times. People with Huntington's Disease have a CAG repeat abut 36 to 120 times. The larger repeat you have the more likely you are to develop symptoms at a younger age. If your parent has it you automatically have a 50 percent chance of getting it also. If you get it, then your children have a 50 percent chance also. If you do not have it, then you cannot pass it on to your children.