Hearing loss can be hereditary. If there are already cases of severe hearing loss in your family, there is a certain probability of heredity.
Original post available in Deutsch here: https://www.ihr-hoergeraet.de/ist-schwerhoerigkeit-erblich/
Original post available in Deutsch here: https://www.ihr-hoergeraet.de/ist-schwerhoerigkeit-erblich/