The claim
醤油にmRNAが入っている
Original review summary
The review says the viral post confused Yamasa’s production of pseudouridine, a component used in mRNA, with the contents of its soy sauce. Yamasa states that pseudouridine is not used in soy sauce or noodle soup base: “シュードウリジンは醤油やつゆには使われておりません。”[S1]
Research date:
Sources and attribution
- [S1] 日本ファクトチェックセンター original review
Original review · Retrieved October 16, 2026