**12. Conclusions**

The most rigorous medical studies have proven that mammography screening reduces deaths from breast cancer for women aged 40–74. This has been confirmed by observational studies, failure analyses, and incidence of death studies. Mammography is far from perfect. It does not find all cancers, and even earlier detection does not guarantee a cure. Therapy has improved, but there is still no cure for advanced cancers, and screening has helped cut the death rate from breast cancer in half. Computer models all show that annual screening saves the most lives. The age of 50 has no scientific support as a threshold for screening.

The promulgation of misinformation needs to stop. All women and their physicians need to be provided with scientifically valid information to make "informed decisions." Women should be advised that annual screening starting at the age of 40 saves the most lives.

**Funding:** This research received no external funding.

**Institutional Review Board Statement:** Not applicable.

**Informed Consent Statement:** Not applicable.

**Data Availability Statement:** Not applicable.

**Conflicts of Interest:** D.B.K. receives royalties from IZI Medical and is a consultant to DART Imaging, which makes mammography devices for China.
