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Adults with atherosclerotic cardiovascular disease (ASCVD) are recommended high-intensity statins, with those at very high risk for recurrent events recommended adding ezetimibe and/or a proprotein convertase subtilisin/kexin type 9 inhibitor if their low-density lipoprotein cholesterol (LDL-C) is ≥70 mg/dL. We estimated the number of recurrent ASCVD events potentially averted if all adults in the United States (US) ≥45 years of age with ASCVD achieved an LDL-C70 mg/dL.The number of US adults with ASCVD and LDL-C ≥70 mg/dL was estimated from the National Health and Nutrition Examination Survey 2009-2016 (n = 596). The 10-year cumulative incidence of recurrent ASCVD events was estimated from the REasons for Geographic And Racial Differences in Stroke study (n = 5390), weighted to the US population by age, race, and sex. The ASCVD risk reduction by achieving an LDL-C70 mg/dL was estimated from meta-analyses of lipid-lowering treatment trials.Overall, 14.7 (95% CI, 13.7-15.8) million US adults had ASCVD, of whom 11.6 (95% CI, 10.6-12.5) million had LDL-C ≥70 mg/dL. The 10-year cumulative incidence of ASCVD events was 24.3% (95% CI, 23.2-25.6%). We projected that 2.823 (95% CI, 2.543-3.091) million ASCVD events would occur over 10 years among US adults with ASCVD and LDL-C ≥70 mg/dL. Overall, 0.634 (95% CI, 0.542-0.737) million ASCVD events could potentially be averted if all US adults with ASCVD achieved and maintained LDL-C70 mg/dL.A substantial number of recurrent ASCVD events could be averted over 10 years if all US adults with ASCVD achieved, and maintained, an LDL-C70 mg/dL.