Peter C. Gøtzsche's article debunks the widespread claims about mammography screening, asserting that the public has been systematically lied to for over 40 years. He argues that screening does not save lives, citing randomized trials showing no reduction in overall mortality (risk ratio 1.01). Gøtzsche explains that breast cancer mortality is a flawed outcome due to biased cause-of-death assessments and significant overdiagnosis of harmless cancers, leading to unnecessary and harmful treatments (radiotherapy, chemotherapy) that increase overall mortality from other causes. He contends that "early detection" is misleading, as cancers exist for decades before mammographic detection, and screening only advances diagnosis by less than a year. Crucially, he states that screening increases mastectomies by 31% due to overdiagnosis of both invasive cancer and carcinoma in situ, contradicting claims of less invasive surgery. The author accuses screening advocates, cancer charities, and health authorities of deliberate misinformation, scientific misconduct, and manipulation of data, emphasizing the lack of informed consent and coercive invitation practices. He concludes that mammography screening is a "very harmful" intervention due to overdiagnosis, overtreatment, and psychosocial distress from false positives, advising women to decline participation.