After emigrating to Canada in 1963[1] from Shiroishi, Japan by way of Boston,[2] Takahashi grew up in the Montreal suburb of Côte Saint-Luc, Quebec.

[4] She then replaced Mary-Lou Basaraba as host for the half-hour show called Our City, which aired Sunday mornings on channel 12 at 10:30 AM.

Four years later she was promoted to co-anchor[4] on Pulse (now known as CTV News) alongside veteran Bill Haugland until his retirement in 2006.

[2] She originally joined radio under the name of Lisa Takahashi and she also portrayed news presenters in some minor roles for made-for-TV movies.

[7] In 2017, she received the highest honour from her journalistic peers: the Lifetime Achievement Award by the Radio Television Digital News Association (RTDNA).

[4] In 2009 Mutsumi Takahashi became a co-chair for The Best Care for Life Public Campaign for the Montreal University Health Center (MUHC).

Her role is to bring awareness for Concordia University's goal to raise $250 million to upgrade and develop its educational facilities.