`` GMA '' host Joan Lunden revealed this week that she is in treatment for breast cancer . Lunden , who co-hosted `` GMA '' from 1980 to 1997 and promotes health and wellness for women , said she `` jumped into action , '' immediately consulted specialists and sought other opinions before starting with chemotherapy . Discovery came after a precautionary ultrasound and biopsy . Comment:
`` GMA '' host Joan Lunden revealed this week that she is in treatment for breast cancer . Discovery came after a precautionary ultrasound and biopsy . Comment: