Death is defined as the irreversible cessation of vital activities. Medically, death is determined by a physician when the patient shows the following three signs: cardiac arrest, respiratory arrest, and loss of pupillary dilation and light reflexes. In Japan, the Organ Transplant Law (1997) defines brain death as "the irreversible cessation of all brain functions, including the brain stem," and has established criteria for determining brain death. Although it is assumed that brain death is the death of a person when donating organs, at present there is no social consensus that brain death is the death of a person.
Also,human beingThe definition of death and the view of life and death of the "Mere Old Man" vary according to culture, religion, time period, and field of study. At the same time, the way in which death is perceived and its meaning differs depending on the standpoint from which it is discussed. Hirayama states that the nature of death in the third person (death as an object, as discussed in brain death criteria), in the second person (death as seen in the relationship between "I" and "you"), and in the first person (one's own death) is completely different. In any case, death isanxietyHowever, today, people are more willing to disclose the names of their illnesses, and talking about death is becoming more open in everyday life.
nursingIn the "Hospice Care" section of the website, along with the promotion, maintenance, and recovery of people's health, assisting people to die peacefully is also considered an important issue, and there are areas of terminal care and hospice care.

References
1) Masami Hirayama: What is Mortality Studies, Nippon Hyoronsha, 1991.
(2) Japan Society for Clinical Study of Death (ed.): 12 Chapters for Facing Death, Ningen to Rekishi Sha, 1999.
(3) Elisabeth K¨ ubler-Ross (Author) / Akira Suzuki (Translator): The moment of death: On death and its process, Chuokoron Shinsha, 2001.