Constance Roos was born in San Francisco, where she made her home and practised psychiatry. She received degrees from Stanford University and her MD from Case Western University. She was Assistant Clinical Professor of Psychiatry at the University of California San Fransisco.
Constance was an avid traveller, hiker and climber. She had explored and climbed in Africa, New Zealand, Bolivia, Mexico, Europe and Alaska, as well as the western states.