Women aged 40-44 should start getting mammograms every year; women aged 45-54 should get mammograms every year; and women aged 55 and older can get mammograms once every 2 years or continue yearly screenings. In general, mammogram screenings should continue as long as you are in good health and are expected to live 10 more years or longer. While mammogram screenings are not recommended for most women under 40, if you have a mother or sister with breast cancer or was diagnosed with breast cancer at a young age, you should begin screening earlier than the age at which they were diagnosed.