[1] She attended the Division of Science at Tokyo Women's Higher Normal School (now Ochanomizu University) from 1927 until her graduation in 1931.

[5] Yuasa was inspired by the discovery of artificial radioactivity by Irène and Frédéric Joliot-Curie at the Radium Institute in Paris.

[5] Yuasa returned to France in May 1949 as a researcher for the Centre national de la recherche scientifique (CNRS) while remaining a professor-on-leave at Ochanomizu University.

At the CNRS, she began research into beta decay using a Wilson chamber, and published a 1954 article warning of the dangers of hydrogen-bomb testing at Bikini Atoll.

[1] Her research shifted into nuclear reactions using synchrocyclotrons around 1960, and in 1962 she received a doctorate in science from Kyoto University for her thesis, "Étude du type d’invariant de l’interaction Gamow-Teller en désintégration β− de 6He" (Form of Gamow-Teller invariant interaction on beta decay of 6He).

She received a Medal with Purple Ribbon from the Japanese government in 1976 for her efforts to promote cultural exchanges between France and Japan.

[2] Ochanomizu University introduced the Toshiko Yuasa Prize in 2002, a sponsorship for young women scientists to travel to France for further study.