Contrary to the official narrative (which is based on medical business-fabricated pro-mammogram "scientific" data), there is marginal, if any, reliable evidence that mammography, both conventional and digital (3D), reduces mortality from breast cancer in a significant way in any age bracket but a lot of solid evidence shows the procedure does provide more serious harm than serious benefit (read the books: 'Mammography Screening: Truth, Lies and Controversy' by Peter Gotzsche and 'The Mammogram Myth' by Rolf Hefti - see author's synopsis at TheMammogramMyth dot com).
IF........ women (and men) at large were to examine the mammogram data above and beyond the information of the mammogram business cartel (eg American Cancer Society, National Cancer Institute, Komen), they'd also find that it is almost exclusively the big profiteers of the test, ie. the "experts," (eg radiologists, oncologists, medical trade associations, breast cancer "charities" etc) who promote the mass use of the test and that most pro-mammogram "research" is conducted by people with massive vested interests tied to the mammogram industry.
Most women are fooled by the misleading medical mantra that early detection by mammography saves lives simply because the public has been fed ("educated" or rather brainwashed) with a very one-sided biased pro-mammogram set of information circulated by the big business of mainstream medicine. The above mentioned two independent investigative works show that early detection does not mean that there is less breast cancer mortality.
Because of this one-sided promotion and marketing of the test by the medical business, women have been obstructed from making an "informed choice" about its benefits and risks which have been inaccurately depicted by the medical industry, favoring their business interests.
Operating and reasoning based on this false body of information is the reason why very few women understand, for example, that a lot of breast cancer survivors are victims of harm instead of receivers of benefit. Therefore, almost all breast cancer "survivors" and the general public blindly repeat the official medical hype and disinformation.