 Assembly member Lowenthal received her Bachelor of Science degree from the University of Wisconsin (class of 1961) and a Master's of Science in Community and Clinical Psychology from Cal State Long Beach (class of 1974).Since 1975, Lowenthal has been a licensed family counselor and mental health consultant.She has also served as a bilingual mental health consultant for the League of United Latin American Citizens (LULAC), HeadStart, and the Centro de la Raza,

Assembly member Lowenthal was previously married to California State Senator Alan Lowenthal—who was also one of her predecessors in her current Assembly seat.