Dying to Live Forever: The Reasons behind Self-Mummification

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Sunada Tetsu (1768-1829) was arguably the most famous individual who successfully mummified himself.  Early in life, he was not religiously inclined.  He loved a prostitute in Akagawa, Tsuruoka’s pleasure quarters, and although the incident’s specifics are unclear, one day he fought two samurai over the girl.  They drew their swords, and he killed them.  To escape punishment, which would have been death, he fled to Churen Temple in Oaminaka.  There, he embraced the Shugendo faith and became an ascetic.  His austere training was an inspiration to other like-minded people, and they followed him.  They toured Japan, repairing temples and building bridges, and they helped all they could.  An eye disease was blinding people in Edo (modern-day Tokyo), and Tetsu lacked the means to (secularly) help them.  Praying for a cure, he cut out his own eye and threw it into the Sumida River.  After years of continuous asceticism, he buried himself alive.  He said, “As long as I have a body, even if I work myself to the bone, I can still bring salvation to humankind.  However, if I die, I cannot.  To continue bringing salvation to humankind, I have to leave my body in this world and become a sokushinbutsu (one who has attained Buddhahood in the flesh).”

Tetsumonkai’s hand scroll.

Tetsumonkai’s hand scroll. Credit: Ken Jeremiah

Tetsumonkai, as others called him, engaged in a strange diet called mokujikigyo (tree-eating), which involved eliminating grains.  Over the course of 3,000 days, he reduced the amount of food ingested so at the end, he would starve to death.  He supplemented his meager intake with strange substances like pinesap, pine needles, butterburs, and bark, thinking that such items would help to preserve his body.  In 1829, when he was 62 years old, there was a banquet, and all of his friends and disciples gathered.  He remarked that it was great to die surrounded by such great people.  The next day, he stepped into a coffin in Churen’s main hall with a bell.  It was sealed and then lowered into an earthen hole.  A small bamboo tube provided oxygen, and he chanted and rang the bell until he died.  Once his followers heard silence, they did something unusual; they pulled him out and dried his body with candle fires and incense.  (Normally, such bodies were untreated.)  Then, they reburied him for three years, after which they unearthed and redressed him before enshrining him in the main hall at Churen Temple.  Since he had mummified, he was called sokushinbutsu: Living Buddha.  It was thought that he had attained a state called nyujo, which was like suspended animation: neither alive nor dead.  Many wanted to achieve this state of being, though less than 20 in Japan are considered to have been successful.  The reasons behind such a desire are complex, and they connect to the Chinese Daoist pursuit of immortality, which influenced Ch’an (Zen) Buddhism and other faiths. 

Some visitors sit in front of Tetsumonkai, Churen Temple, Japan.

Some visitors sit in front of Tetsumonkai, Churen Temple, Japan. Credit: Ken Jeremiah

The early Chinese believed that the soul was composed of multiple parts (called hun and po), and after death, these parts dissipated, therefore never perpetuating the existence of the deceased.  The only way to keep them together and thus continue (living) in a spiritual form was to leave the body intentionally, as a cicada leaves its husk, and intentionally exiting the body required awareness at the moment of death.  Some Ch’an monks died and then naturally mummified in meditative posture, and it was believed that they had accomplished this feat.  Many Chinese ideas entered Japan and were absorbed by the Shugendo tradition (which was itself assimilated into Shingon Buddhism).  The monks who chose to mummify themselves similarly believed that they must be mindful when the transition from life to death began.  They thought of it like a dream.  If you do not know you are dreaming, you are just swept up into your surroundings, but if you recognize that you are in a dream, you can consciously control your actions; you might even be able to affect the dream’s substantive nature.  This is called lucid dreaming.  The sokushinbutsu (self-mummified monks) viewed death similarly.  To maintain awareness, and to keep their spiritual essence intact, they caused their own deaths.  This explains one of their actions.  A different idea justified their bodily preservation.

When people joined the Shugendo faith, they became issei gyonin, a term that means “one who is an ascetic for his or her entire life.”  Adherents trained at a special place near Mt. Yudono called Senninzawa (literally, hermit’s mountain stream).  Stone markers record their deeds.  They mention those who secluded themselves on mountains for a thousand days, and others who fasted (from cereals) for three thousand.  Such individuals sometimes performed even more incredible austerities, like setting fire to their fingers, cutting off body parts, or torturing themselves in other ways.  These practices, justified by an interpretation of Lotus Sutra passages, were thought to create merit: an energy source that infuses the physical body. 


A very interesting subject, and great information. Especially the dieting parts about pine needles and bark. Mindblowing.

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