| Hangul: | 이제마 |
| Rr: | Yi Je-ma |
| Mr: | Yi Chema |
Yi Je-ma (1837–1900) was a Korean medicine scholar in Late Joseon period.
He wrote a book Dongyi Suse Bowon: Longevity and Life Preservation in Eastern Medicine in 1894. The book is about constitution of people. He claimed that because each person's natural constitution is different, the same disease must be treated differently.[1]
Yi was born as a love child of Jinsa Yi Ban-Oh. As his family was prominent in Hamhung, Yi was able to receive education of sinology, however it was impossible for him to overcome the restrictions of class. Yi wanted to attend the military examination of Gwageo and become a military officer. But, he started his study for diseases as he often suffered from inveterate illness.[2]