You might have more than one person in your family who has HD. This is because HD runs in families
it is hereditary. This means it can be passed from parents to their children. You might hear people talking about genes
(say: jeenz). Your body is made up of millions of cells and your genes are contained in each of these cells.
Genes contain instructions for your body and decide things like what colour your hair is, how tall you are
and the colour of your eyes. They are often called the building blocks of your body. People might say that you look
like other people in your family this is because of your genes. Genes are passed to you from your parents that's why
you might have freckles like your dad, or brown eyes like your mum.
You have about 30,000 different genes in your body. Sometimes genes don't work properly and they cause
people to become unwell. HD is caused by a gene that doesn't work properly. This gene is what makes the brain cells die nobody knows why. Lots of scientists and doctors are trying to work out why and hopefully
find a cure for HD. We know a lot more about this gene now than we used to and are learning new things
about how it works all the time.
If your parent has HD, there is a chance that you might get HD when you're older. BUT there's
the same chance that you wont get HD at all, and hopefully the scientists will have found a way to make people with
HD better by then