The present invention relates to a composition capable of preventing, alleviating or treating hair loss diseases, containing an Alnus japonica extract having cell death inhibitory activity and antioxidant activity. A pharmaceutical composition, a cosmetic composition, and a food composition according to the invention can be usefully used for preventing, treating or alleviating hair loss diseases.본 발명은 세포 사멸 억제 활성 및 항산화 활성을 가진 오리나무 추출물을 포함하여, 탈모 질환을 예방, 개선 또는 치료할 수 있는 조성물에 관한 것이다.
