Martineau believed she had experienced psychosomatic symptoms and later benefits from mesmerism; this medical belief of the times related the uterus to emotions and hysteria. She had symptoms of hysteria in her loss of taste and smell. Her partial deafness throughout life may have contributed to her problems. Various people, including the maid, her brother, and Spencer T. Hall (a notable mesmerist) performed mesmerism on her. Some historians attribute her apparent recovery from symptoms to a shift in the positioning of her tumor so that it no longer obstructed other organs. As the physical improvements were the first signs of healing she had in five years and happened at the same time of her first mesmeric treatment, Martineau confidentially credited mesmerism with her "cure".