1. A method for adapting a hearing aid based on a genetic feature of a wearer of the hearing aid, comprising: detecting the genetic feature of the wearer of the hearing aid, wherein the genetic feature is a mutation of a gene which is phenotypically associated with a hearing problem or hearing loss of the wearer; transmitting the genetic feature to the hearing aid, wherein the genetic feature is transmitted to a device of the hearing aid and compared with a plurality of known and defined genetic defects that are stored in a database; and adapting an adaptable parameter of the hearing aid based on the genetic feature so that the hearing aid is individually adapted to the wearer.