Legality of incest

Incest means when people who are related to each other, like brothers, sisters, and cousins, have a sexual relationship. It is also when parents and children have a sexual relationship. In most places, incest is against the law. This means that it is illegal. That is because it is dangerous. People who are related to each other can have babies that have health problems because their parents are related. So, it is not allowed because it's not safe.